[NVPTX] Remove nvvm.ldg.global.* intrinsics #112834
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@llvm/pr-subscribers-clang Author: Alex MacLean (AlexMaclean) ChangesRemove these intrinsics which can be better represented by load instructions with
Patch is 40.27 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/112834.diff 10 Files Affected:
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index f6d7db2c204c12..3b42977b578e15 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -20473,7 +20473,7 @@ static NVPTXMmaInfo getNVPTXMmaInfo(unsigned BuiltinID) {
#undef MMA_VARIANTS_B1_XOR
}
-static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
+static Value *MakeLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
QualType ArgType = E->getArg(0)->getType();
@@ -20484,6 +20484,21 @@ static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
{Ptr, ConstantInt::get(CGF.Builder.getInt32Ty(), Align.getQuantity())});
}
+static Value *MakeLdg(CodeGenFunction &CGF, const CallExpr *E) {
+ Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
+ QualType ArgType = E->getArg(0)->getType();
+ clang::CharUnits AlignV = CGF.CGM.getNaturalPointeeTypeAlignment(ArgType);
+ llvm::Type *ElemTy = CGF.ConvertTypeForMem(ArgType->getPointeeType());
+
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ auto *ASC = CGF.Builder.CreateAddrSpaceCast(Ptr, CGF.Builder.getPtrTy(1));
+ auto *LD = CGF.Builder.CreateAlignedLoad(ElemTy, ASC, AlignV.getAsAlign());
+ MDNode *MD = MDNode::get(CGF.Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+
+ return LD;
+}
+
static Value *MakeScopedAtomic(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
@@ -20517,9 +20532,11 @@ static Value *MakeHalfType(unsigned IntrinsicID, unsigned BuiltinID,
return nullptr;
}
- if (IntrinsicID == Intrinsic::nvvm_ldg_global_f ||
- IntrinsicID == Intrinsic::nvvm_ldu_global_f)
- return MakeLdgLdu(IntrinsicID, CGF, E);
+ if (BuiltinID == NVPTX::BI__nvvm_ldg_h || BuiltinID == NVPTX::BI__nvvm_ldg_h2)
+ return MakeLdg(CGF, E);
+
+ if (IntrinsicID == Intrinsic::nvvm_ldu_global_f)
+ return MakeLdu(IntrinsicID, CGF, E);
SmallVector<Value *, 16> Args;
auto *F = CGF.CGM.getIntrinsic(IntrinsicID);
@@ -20656,16 +20673,15 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldg_ul2:
case NVPTX::BI__nvvm_ldg_ull:
case NVPTX::BI__nvvm_ldg_ull2:
- // PTX Interoperability section 2.2: "For a vector with an even number of
- // elements, its alignment is set to number of elements times the alignment
- // of its member: n*alignof(t)."
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_i, *this, E);
case NVPTX::BI__nvvm_ldg_f:
case NVPTX::BI__nvvm_ldg_f2:
case NVPTX::BI__nvvm_ldg_f4:
case NVPTX::BI__nvvm_ldg_d:
case NVPTX::BI__nvvm_ldg_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_f, *this, E);
+ // PTX Interoperability section 2.2: "For a vector with an even number of
+ // elements, its alignment is set to number of elements times the alignment
+ // of its member: n*alignof(t)."
+ return MakeLdg(*this, E);
case NVPTX::BI__nvvm_ldu_c:
case NVPTX::BI__nvvm_ldu_sc:
@@ -20696,13 +20712,13 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldu_ul2:
case NVPTX::BI__nvvm_ldu_ull:
case NVPTX::BI__nvvm_ldu_ull2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
case NVPTX::BI__nvvm_ldu_f:
case NVPTX::BI__nvvm_ldu_f2:
case NVPTX::BI__nvvm_ldu_f4:
case NVPTX::BI__nvvm_ldu_d:
case NVPTX::BI__nvvm_ldu_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
case NVPTX::BI__nvvm_atom_cta_add_gen_i:
case NVPTX::BI__nvvm_atom_cta_add_gen_l:
@@ -21176,14 +21192,11 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
return MakeHalfType(Intrinsic::nvvm_fmin_xorsign_abs_f16x2, BuiltinID, E,
*this);
case NVPTX::BI__nvvm_ldg_h:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldg_h2:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
+ return MakeHalfType(Intrinsic::not_intrinsic, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldu_h:
+ case NVPTX::BI__nvvm_ldu_h2:
return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- case NVPTX::BI__nvvm_ldu_h2: {
- return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- }
case NVPTX::BI__nvvm_cp_async_ca_shared_global_4:
return MakeCpAsync(Intrinsic::nvvm_cp_async_ca_shared_global_4,
Intrinsic::nvvm_cp_async_ca_shared_global_4_s, *this, E,
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
index b594fc876d4b9e..035c4c6066be24 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
@@ -52,8 +52,8 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
-// CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0(ptr {{.*}}, i32 2)
-// CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0(ptr {{.*}}, i32 4)
+// CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
+// CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
// CHECK: call half @llvm.nvvm.ldu.global.f.f16.p0(ptr {{.*}}, i32 2)
// CHECK: call <2 x half> @llvm.nvvm.ldu.global.f.v2f16.p0(ptr {{.*}}, i32 4)
__device__ void nvvm_native_half_types(void *a, void*b, void*c, __fp16* out) {
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type.c b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
index 4aeae953bc1622..511497702ff7f9 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
@@ -177,9 +177,9 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK-LABEL: nvvm_ldg_native_half_types
__device__ void nvvm_ldg_native_half_types(const void *p) {
- // CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0
+ // CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
__nvvm_ldg_h((const __fp16 *)p);
- // CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0
+ // CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
__nvvm_ldg_h2((const __fp16v2 *)p);
}
diff --git a/clang/test/CodeGen/builtins-nvptx.c b/clang/test/CodeGen/builtins-nvptx.c
index 0d0e3ecdb90c9e..3406cbdde2bf88 100644
--- a/clang/test/CodeGen/builtins-nvptx.c
+++ b/clang/test/CodeGen/builtins-nvptx.c
@@ -598,33 +598,33 @@ __device__ void nvvm_atom(float *fp, float f, double *dfp, double df,
// CHECK-LABEL: nvvm_ldg
__device__ void nvvm_ldg(const void *p) {
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
__nvvm_ldg_c((const char *)p);
__nvvm_ldg_uc((const unsigned char *)p);
__nvvm_ldg_sc((const signed char *)p);
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
__nvvm_ldg_s((const short *)p);
__nvvm_ldg_us((const unsigned short *)p);
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_i((const int *)p);
__nvvm_ldg_ui((const unsigned int *)p);
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_l((const long *)p);
__nvvm_ldg_ul((const unsigned long *)p);
- // CHECK: call float @llvm.nvvm.ldg.global.f.f32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load float, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_f((const float *)p);
- // CHECK: call double @llvm.nvvm.ldg.global.f.f64.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load double, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_d((const double *)p);
// In practice, the pointers we pass to __ldg will be aligned as appropriate
@@ -636,9 +636,9 @@ __device__ void nvvm_ldg(const void *p) {
// elements, its alignment is set to number of elements times the alignment of
// its member: n*alignof(t)."
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
typedef char char2 __attribute__((ext_vector_type(2)));
typedef unsigned char uchar2 __attribute__((ext_vector_type(2)));
typedef signed char schar2 __attribute__((ext_vector_type(2)));
@@ -646,9 +646,9 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc2((const uchar2 *)p);
__nvvm_ldg_sc2((const schar2 *)p);
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef char char4 __attribute__((ext_vector_type(4)));
typedef unsigned char uchar4 __attribute__((ext_vector_type(4)));
typedef signed char schar4 __attribute__((ext_vector_type(4)));
@@ -656,59 +656,59 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc4((const uchar4 *)p);
__nvvm_ldg_sc4((const schar4 *)p);
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef short short2 __attribute__((ext_vector_type(2)));
typedef unsigned short ushort2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_s2((const short2 *)p);
__nvvm_ldg_us2((const ushort2 *)p);
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef short short4 __attribute__((ext_vector_type(4)));
typedef unsigned short ushort4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_s4((const short4 *)p);
__nvvm_ldg_us4((const ushort4 *)p);
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef int int2 __attribute__((ext_vector_type(2)));
typedef unsigned int uint2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_i2((const int2 *)p);
__nvvm_ldg_ui2((const uint2 *)p);
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef int int4 __attribute__((ext_vector_type(4)));
typedef unsigned int uint4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_i4((const int4 *)p);
__nvvm_ldg_ui4((const uint4 *)p);
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long2 __attribute__((ext_vector_type(2)));
typedef unsigned long ulong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_l2((const long2 *)p);
__nvvm_ldg_ul2((const ulong2 *)p);
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long longlong2 __attribute__((ext_vector_type(2)));
typedef unsigned long long ulonglong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_ll2((const longlong2 *)p);
__nvvm_ldg_ull2((const ulonglong2 *)p);
- // CHECK: call <2 x float> @llvm.nvvm.ldg.global.f.v2f32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x float>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef float float2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_f2((const float2 *)p);
- // CHECK: call <4 x float> @llvm.nvvm.ldg.global.f.v4f32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x float>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef float float4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_f4((const float4 *)p);
- // CHECK: call <2 x double> @llvm.nvvm.ldg.global.f.v2f64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x double>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef double double2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_d2((const double2 *)p);
}
diff --git a/llvm/include/llvm/IR/IntrinsicsNVVM.td b/llvm/include/llvm/IR/IntrinsicsNVVM.td
index 7b8ffe417fccdb..3cc45adb198e26 100644
--- a/llvm/include/llvm/IR/IntrinsicsNVVM.td
+++ b/llvm/include/llvm/IR/IntrinsicsNVVM.td
@@ -42,6 +42,9 @@
// * llvm.nvvm.ptr.shared.to.gen --> ibid.
// * llvm.nvvm.ptr.constant.to.gen --> ibid.
// * llvm.nvvm.ptr.local.to.gen --> ibid.
+// * llvm.nvvm.ldg.global.i --> load addrspace(1) !load.invariant
+// * llvm.nvvm.ldg.global.f --> ibid.
+// * llvm.nvvm.ldg.global.p --> ibid.
def llvm_global_ptr_ty : LLVMQualPointerType<1>; // (global)ptr
def llvm_shared_ptr_ty : LLVMQualPointerType<3>; // (shared)ptr
@@ -1595,21 +1598,6 @@ def int_nvvm_ldu_global_p : Intrinsic<[llvm_anyptr_ty],
[IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
"llvm.nvvm.ldu.global.p">;
-// Generated within nvvm. Use for ldg on sm_35 or later. Second arg is the
-// pointer's alignment.
-def int_nvvm_ldg_global_i : Intrinsic<[llvm_anyint_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.i">;
-def int_nvvm_ldg_global_f : Intrinsic<[llvm_anyfloat_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.f">;
-def int_nvvm_ldg_global_p : Intrinsic<[llvm_anyptr_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.p">;
-
// Used in nvvm internally to help address space opt and ptx code generation
// This is for params that are passed to kernel functions by pointer by-val.
def int_nvvm_ptr_gen_to_param: Intrinsic<[llvm_anyptr_ty],
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index bb03c9290e4cf4..73882fbc7a251a 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -37,6 +37,7 @@
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
+#include "llvm/IR/Value.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/AMDGPUAddrSpace.h"
#include "llvm/Support/CommandLine.h"
@@ -1301,6 +1302,10 @@ static bool upgradeIntrinsicFunction1(Function *F, Function *&NewFn,
(Name.consume_front("local") || Name.consume_front("shared") ||
Name.consume_front("global") || Name.consume_front("constant")) &&
Name.starts_with(".to.gen");
+ else if (Name.consume_front("ldg.global."))
+ // nvvm.ldg.global.{i,p,f}
+ Expand = (Name.starts_with("i.") || Name.starts_with("f.") ||
+ Name.starts_with("p."));
else
Expand = false;
@@ -2363,6 +2368,15 @@ static Value *upgradeNVVMIntrinsicCall(StringRef Name, CallBase *CI,
Name.consume_front("constant")) &&
Name.starts_with(".to.gen"))) {
Rep = Builder.CreateAddrSpaceCast(CI->getArgOperand(0), CI->getType());
+ } else if (Name.consume_front("ldg.global")) {
+ Value *Ptr = CI->getArgOperand(0);
+ Align PtrAlign = cast<ConstantInt>(CI->getArgOperand(1))->getAlignValue();
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ Value *ASC = Builder.CreateAddrSpaceCast(Ptr, Builder.getPtrTy(1));
+ Instruction *LD = Builder.CreateAlignedLoad(CI->getType(), ASC, PtrAlign);
+ MDNode *MD = MDNode::get(Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+ return LD;
} else {
Intrinsic::ID IID = shouldUpgradeNVPTXBF16Intrinsic(Name);
if (IID != Intrinsic::not_intrinsic &&
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
index 7f942de74bdcc9..4d2e7fb373de5d 100644
--- a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
@@ -126,8 +126,6 @@ void NVPTXDAGToDAGISel::Select(SDNode *N) {
if (tryLoadVector(N))
return;
break;
- case NVPTXISD::LDGV2:
- case NVPTXISD::LDGV4:
case NVPTXISD::LDUV2:
case NVPTXISD::LDUV4:
if (tryLDGLDU(N))
@@ -550,9 +548,6 @@ bool NVPTXDAGToDAGISel::tryIntrinsicChain(SDNode *N) {
switch (IID) {
default:
return false;
- case Intrinsic::nvvm_ldg_global_f:
- case Intrinsic::nvvm_ldg_global_i:
- case Intrinsic::nvvm_ldg_glo...
[truncated]
|
|
@llvm/pr-subscribers-clang-codegen Author: Alex MacLean (AlexMaclean) ChangesRemove these intrinsics which can be better represented by load instructions with
Patch is 40.27 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/112834.diff 10 Files Affected:
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index f6d7db2c204c12..3b42977b578e15 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -20473,7 +20473,7 @@ static NVPTXMmaInfo getNVPTXMmaInfo(unsigned BuiltinID) {
#undef MMA_VARIANTS_B1_XOR
}
-static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
+static Value *MakeLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
QualType ArgType = E->getArg(0)->getType();
@@ -20484,6 +20484,21 @@ static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
{Ptr, ConstantInt::get(CGF.Builder.getInt32Ty(), Align.getQuantity())});
}
+static Value *MakeLdg(CodeGenFunction &CGF, const CallExpr *E) {
+ Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
+ QualType ArgType = E->getArg(0)->getType();
+ clang::CharUnits AlignV = CGF.CGM.getNaturalPointeeTypeAlignment(ArgType);
+ llvm::Type *ElemTy = CGF.ConvertTypeForMem(ArgType->getPointeeType());
+
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ auto *ASC = CGF.Builder.CreateAddrSpaceCast(Ptr, CGF.Builder.getPtrTy(1));
+ auto *LD = CGF.Builder.CreateAlignedLoad(ElemTy, ASC, AlignV.getAsAlign());
+ MDNode *MD = MDNode::get(CGF.Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+
+ return LD;
+}
+
static Value *MakeScopedAtomic(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
@@ -20517,9 +20532,11 @@ static Value *MakeHalfType(unsigned IntrinsicID, unsigned BuiltinID,
return nullptr;
}
- if (IntrinsicID == Intrinsic::nvvm_ldg_global_f ||
- IntrinsicID == Intrinsic::nvvm_ldu_global_f)
- return MakeLdgLdu(IntrinsicID, CGF, E);
+ if (BuiltinID == NVPTX::BI__nvvm_ldg_h || BuiltinID == NVPTX::BI__nvvm_ldg_h2)
+ return MakeLdg(CGF, E);
+
+ if (IntrinsicID == Intrinsic::nvvm_ldu_global_f)
+ return MakeLdu(IntrinsicID, CGF, E);
SmallVector<Value *, 16> Args;
auto *F = CGF.CGM.getIntrinsic(IntrinsicID);
@@ -20656,16 +20673,15 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldg_ul2:
case NVPTX::BI__nvvm_ldg_ull:
case NVPTX::BI__nvvm_ldg_ull2:
- // PTX Interoperability section 2.2: "For a vector with an even number of
- // elements, its alignment is set to number of elements times the alignment
- // of its member: n*alignof(t)."
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_i, *this, E);
case NVPTX::BI__nvvm_ldg_f:
case NVPTX::BI__nvvm_ldg_f2:
case NVPTX::BI__nvvm_ldg_f4:
case NVPTX::BI__nvvm_ldg_d:
case NVPTX::BI__nvvm_ldg_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_f, *this, E);
+ // PTX Interoperability section 2.2: "For a vector with an even number of
+ // elements, its alignment is set to number of elements times the alignment
+ // of its member: n*alignof(t)."
+ return MakeLdg(*this, E);
case NVPTX::BI__nvvm_ldu_c:
case NVPTX::BI__nvvm_ldu_sc:
@@ -20696,13 +20712,13 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldu_ul2:
case NVPTX::BI__nvvm_ldu_ull:
case NVPTX::BI__nvvm_ldu_ull2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
case NVPTX::BI__nvvm_ldu_f:
case NVPTX::BI__nvvm_ldu_f2:
case NVPTX::BI__nvvm_ldu_f4:
case NVPTX::BI__nvvm_ldu_d:
case NVPTX::BI__nvvm_ldu_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
case NVPTX::BI__nvvm_atom_cta_add_gen_i:
case NVPTX::BI__nvvm_atom_cta_add_gen_l:
@@ -21176,14 +21192,11 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
return MakeHalfType(Intrinsic::nvvm_fmin_xorsign_abs_f16x2, BuiltinID, E,
*this);
case NVPTX::BI__nvvm_ldg_h:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldg_h2:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
+ return MakeHalfType(Intrinsic::not_intrinsic, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldu_h:
+ case NVPTX::BI__nvvm_ldu_h2:
return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- case NVPTX::BI__nvvm_ldu_h2: {
- return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- }
case NVPTX::BI__nvvm_cp_async_ca_shared_global_4:
return MakeCpAsync(Intrinsic::nvvm_cp_async_ca_shared_global_4,
Intrinsic::nvvm_cp_async_ca_shared_global_4_s, *this, E,
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
index b594fc876d4b9e..035c4c6066be24 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
@@ -52,8 +52,8 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
-// CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0(ptr {{.*}}, i32 2)
-// CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0(ptr {{.*}}, i32 4)
+// CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
+// CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
// CHECK: call half @llvm.nvvm.ldu.global.f.f16.p0(ptr {{.*}}, i32 2)
// CHECK: call <2 x half> @llvm.nvvm.ldu.global.f.v2f16.p0(ptr {{.*}}, i32 4)
__device__ void nvvm_native_half_types(void *a, void*b, void*c, __fp16* out) {
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type.c b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
index 4aeae953bc1622..511497702ff7f9 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
@@ -177,9 +177,9 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK-LABEL: nvvm_ldg_native_half_types
__device__ void nvvm_ldg_native_half_types(const void *p) {
- // CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0
+ // CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
__nvvm_ldg_h((const __fp16 *)p);
- // CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0
+ // CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
__nvvm_ldg_h2((const __fp16v2 *)p);
}
diff --git a/clang/test/CodeGen/builtins-nvptx.c b/clang/test/CodeGen/builtins-nvptx.c
index 0d0e3ecdb90c9e..3406cbdde2bf88 100644
--- a/clang/test/CodeGen/builtins-nvptx.c
+++ b/clang/test/CodeGen/builtins-nvptx.c
@@ -598,33 +598,33 @@ __device__ void nvvm_atom(float *fp, float f, double *dfp, double df,
// CHECK-LABEL: nvvm_ldg
__device__ void nvvm_ldg(const void *p) {
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
__nvvm_ldg_c((const char *)p);
__nvvm_ldg_uc((const unsigned char *)p);
__nvvm_ldg_sc((const signed char *)p);
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
__nvvm_ldg_s((const short *)p);
__nvvm_ldg_us((const unsigned short *)p);
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_i((const int *)p);
__nvvm_ldg_ui((const unsigned int *)p);
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_l((const long *)p);
__nvvm_ldg_ul((const unsigned long *)p);
- // CHECK: call float @llvm.nvvm.ldg.global.f.f32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load float, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_f((const float *)p);
- // CHECK: call double @llvm.nvvm.ldg.global.f.f64.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load double, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_d((const double *)p);
// In practice, the pointers we pass to __ldg will be aligned as appropriate
@@ -636,9 +636,9 @@ __device__ void nvvm_ldg(const void *p) {
// elements, its alignment is set to number of elements times the alignment of
// its member: n*alignof(t)."
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
typedef char char2 __attribute__((ext_vector_type(2)));
typedef unsigned char uchar2 __attribute__((ext_vector_type(2)));
typedef signed char schar2 __attribute__((ext_vector_type(2)));
@@ -646,9 +646,9 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc2((const uchar2 *)p);
__nvvm_ldg_sc2((const schar2 *)p);
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef char char4 __attribute__((ext_vector_type(4)));
typedef unsigned char uchar4 __attribute__((ext_vector_type(4)));
typedef signed char schar4 __attribute__((ext_vector_type(4)));
@@ -656,59 +656,59 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc4((const uchar4 *)p);
__nvvm_ldg_sc4((const schar4 *)p);
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef short short2 __attribute__((ext_vector_type(2)));
typedef unsigned short ushort2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_s2((const short2 *)p);
__nvvm_ldg_us2((const ushort2 *)p);
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef short short4 __attribute__((ext_vector_type(4)));
typedef unsigned short ushort4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_s4((const short4 *)p);
__nvvm_ldg_us4((const ushort4 *)p);
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef int int2 __attribute__((ext_vector_type(2)));
typedef unsigned int uint2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_i2((const int2 *)p);
__nvvm_ldg_ui2((const uint2 *)p);
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef int int4 __attribute__((ext_vector_type(4)));
typedef unsigned int uint4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_i4((const int4 *)p);
__nvvm_ldg_ui4((const uint4 *)p);
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long2 __attribute__((ext_vector_type(2)));
typedef unsigned long ulong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_l2((const long2 *)p);
__nvvm_ldg_ul2((const ulong2 *)p);
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long longlong2 __attribute__((ext_vector_type(2)));
typedef unsigned long long ulonglong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_ll2((const longlong2 *)p);
__nvvm_ldg_ull2((const ulonglong2 *)p);
- // CHECK: call <2 x float> @llvm.nvvm.ldg.global.f.v2f32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x float>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef float float2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_f2((const float2 *)p);
- // CHECK: call <4 x float> @llvm.nvvm.ldg.global.f.v4f32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x float>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef float float4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_f4((const float4 *)p);
- // CHECK: call <2 x double> @llvm.nvvm.ldg.global.f.v2f64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x double>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef double double2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_d2((const double2 *)p);
}
diff --git a/llvm/include/llvm/IR/IntrinsicsNVVM.td b/llvm/include/llvm/IR/IntrinsicsNVVM.td
index 7b8ffe417fccdb..3cc45adb198e26 100644
--- a/llvm/include/llvm/IR/IntrinsicsNVVM.td
+++ b/llvm/include/llvm/IR/IntrinsicsNVVM.td
@@ -42,6 +42,9 @@
// * llvm.nvvm.ptr.shared.to.gen --> ibid.
// * llvm.nvvm.ptr.constant.to.gen --> ibid.
// * llvm.nvvm.ptr.local.to.gen --> ibid.
+// * llvm.nvvm.ldg.global.i --> load addrspace(1) !load.invariant
+// * llvm.nvvm.ldg.global.f --> ibid.
+// * llvm.nvvm.ldg.global.p --> ibid.
def llvm_global_ptr_ty : LLVMQualPointerType<1>; // (global)ptr
def llvm_shared_ptr_ty : LLVMQualPointerType<3>; // (shared)ptr
@@ -1595,21 +1598,6 @@ def int_nvvm_ldu_global_p : Intrinsic<[llvm_anyptr_ty],
[IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
"llvm.nvvm.ldu.global.p">;
-// Generated within nvvm. Use for ldg on sm_35 or later. Second arg is the
-// pointer's alignment.
-def int_nvvm_ldg_global_i : Intrinsic<[llvm_anyint_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.i">;
-def int_nvvm_ldg_global_f : Intrinsic<[llvm_anyfloat_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.f">;
-def int_nvvm_ldg_global_p : Intrinsic<[llvm_anyptr_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.p">;
-
// Used in nvvm internally to help address space opt and ptx code generation
// This is for params that are passed to kernel functions by pointer by-val.
def int_nvvm_ptr_gen_to_param: Intrinsic<[llvm_anyptr_ty],
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index bb03c9290e4cf4..73882fbc7a251a 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -37,6 +37,7 @@
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
+#include "llvm/IR/Value.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/AMDGPUAddrSpace.h"
#include "llvm/Support/CommandLine.h"
@@ -1301,6 +1302,10 @@ static bool upgradeIntrinsicFunction1(Function *F, Function *&NewFn,
(Name.consume_front("local") || Name.consume_front("shared") ||
Name.consume_front("global") || Name.consume_front("constant")) &&
Name.starts_with(".to.gen");
+ else if (Name.consume_front("ldg.global."))
+ // nvvm.ldg.global.{i,p,f}
+ Expand = (Name.starts_with("i.") || Name.starts_with("f.") ||
+ Name.starts_with("p."));
else
Expand = false;
@@ -2363,6 +2368,15 @@ static Value *upgradeNVVMIntrinsicCall(StringRef Name, CallBase *CI,
Name.consume_front("constant")) &&
Name.starts_with(".to.gen"))) {
Rep = Builder.CreateAddrSpaceCast(CI->getArgOperand(0), CI->getType());
+ } else if (Name.consume_front("ldg.global")) {
+ Value *Ptr = CI->getArgOperand(0);
+ Align PtrAlign = cast<ConstantInt>(CI->getArgOperand(1))->getAlignValue();
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ Value *ASC = Builder.CreateAddrSpaceCast(Ptr, Builder.getPtrTy(1));
+ Instruction *LD = Builder.CreateAlignedLoad(CI->getType(), ASC, PtrAlign);
+ MDNode *MD = MDNode::get(Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+ return LD;
} else {
Intrinsic::ID IID = shouldUpgradeNVPTXBF16Intrinsic(Name);
if (IID != Intrinsic::not_intrinsic &&
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
index 7f942de74bdcc9..4d2e7fb373de5d 100644
--- a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
@@ -126,8 +126,6 @@ void NVPTXDAGToDAGISel::Select(SDNode *N) {
if (tryLoadVector(N))
return;
break;
- case NVPTXISD::LDGV2:
- case NVPTXISD::LDGV4:
case NVPTXISD::LDUV2:
case NVPTXISD::LDUV4:
if (tryLDGLDU(N))
@@ -550,9 +548,6 @@ bool NVPTXDAGToDAGISel::tryIntrinsicChain(SDNode *N) {
switch (IID) {
default:
return false;
- case Intrinsic::nvvm_ldg_global_f:
- case Intrinsic::nvvm_ldg_global_i:
- case Intrinsic::nvvm_ldg_glo...
[truncated]
|
|
@llvm/pr-subscribers-llvm-ir Author: Alex MacLean (AlexMaclean) ChangesRemove these intrinsics which can be better represented by load instructions with
Patch is 40.27 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/112834.diff 10 Files Affected:
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index f6d7db2c204c12..3b42977b578e15 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -20473,7 +20473,7 @@ static NVPTXMmaInfo getNVPTXMmaInfo(unsigned BuiltinID) {
#undef MMA_VARIANTS_B1_XOR
}
-static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
+static Value *MakeLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
QualType ArgType = E->getArg(0)->getType();
@@ -20484,6 +20484,21 @@ static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
{Ptr, ConstantInt::get(CGF.Builder.getInt32Ty(), Align.getQuantity())});
}
+static Value *MakeLdg(CodeGenFunction &CGF, const CallExpr *E) {
+ Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
+ QualType ArgType = E->getArg(0)->getType();
+ clang::CharUnits AlignV = CGF.CGM.getNaturalPointeeTypeAlignment(ArgType);
+ llvm::Type *ElemTy = CGF.ConvertTypeForMem(ArgType->getPointeeType());
+
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ auto *ASC = CGF.Builder.CreateAddrSpaceCast(Ptr, CGF.Builder.getPtrTy(1));
+ auto *LD = CGF.Builder.CreateAlignedLoad(ElemTy, ASC, AlignV.getAsAlign());
+ MDNode *MD = MDNode::get(CGF.Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+
+ return LD;
+}
+
static Value *MakeScopedAtomic(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
@@ -20517,9 +20532,11 @@ static Value *MakeHalfType(unsigned IntrinsicID, unsigned BuiltinID,
return nullptr;
}
- if (IntrinsicID == Intrinsic::nvvm_ldg_global_f ||
- IntrinsicID == Intrinsic::nvvm_ldu_global_f)
- return MakeLdgLdu(IntrinsicID, CGF, E);
+ if (BuiltinID == NVPTX::BI__nvvm_ldg_h || BuiltinID == NVPTX::BI__nvvm_ldg_h2)
+ return MakeLdg(CGF, E);
+
+ if (IntrinsicID == Intrinsic::nvvm_ldu_global_f)
+ return MakeLdu(IntrinsicID, CGF, E);
SmallVector<Value *, 16> Args;
auto *F = CGF.CGM.getIntrinsic(IntrinsicID);
@@ -20656,16 +20673,15 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldg_ul2:
case NVPTX::BI__nvvm_ldg_ull:
case NVPTX::BI__nvvm_ldg_ull2:
- // PTX Interoperability section 2.2: "For a vector with an even number of
- // elements, its alignment is set to number of elements times the alignment
- // of its member: n*alignof(t)."
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_i, *this, E);
case NVPTX::BI__nvvm_ldg_f:
case NVPTX::BI__nvvm_ldg_f2:
case NVPTX::BI__nvvm_ldg_f4:
case NVPTX::BI__nvvm_ldg_d:
case NVPTX::BI__nvvm_ldg_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_f, *this, E);
+ // PTX Interoperability section 2.2: "For a vector with an even number of
+ // elements, its alignment is set to number of elements times the alignment
+ // of its member: n*alignof(t)."
+ return MakeLdg(*this, E);
case NVPTX::BI__nvvm_ldu_c:
case NVPTX::BI__nvvm_ldu_sc:
@@ -20696,13 +20712,13 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldu_ul2:
case NVPTX::BI__nvvm_ldu_ull:
case NVPTX::BI__nvvm_ldu_ull2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
case NVPTX::BI__nvvm_ldu_f:
case NVPTX::BI__nvvm_ldu_f2:
case NVPTX::BI__nvvm_ldu_f4:
case NVPTX::BI__nvvm_ldu_d:
case NVPTX::BI__nvvm_ldu_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
case NVPTX::BI__nvvm_atom_cta_add_gen_i:
case NVPTX::BI__nvvm_atom_cta_add_gen_l:
@@ -21176,14 +21192,11 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
return MakeHalfType(Intrinsic::nvvm_fmin_xorsign_abs_f16x2, BuiltinID, E,
*this);
case NVPTX::BI__nvvm_ldg_h:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldg_h2:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
+ return MakeHalfType(Intrinsic::not_intrinsic, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldu_h:
+ case NVPTX::BI__nvvm_ldu_h2:
return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- case NVPTX::BI__nvvm_ldu_h2: {
- return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- }
case NVPTX::BI__nvvm_cp_async_ca_shared_global_4:
return MakeCpAsync(Intrinsic::nvvm_cp_async_ca_shared_global_4,
Intrinsic::nvvm_cp_async_ca_shared_global_4_s, *this, E,
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
index b594fc876d4b9e..035c4c6066be24 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
@@ -52,8 +52,8 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
-// CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0(ptr {{.*}}, i32 2)
-// CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0(ptr {{.*}}, i32 4)
+// CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
+// CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
// CHECK: call half @llvm.nvvm.ldu.global.f.f16.p0(ptr {{.*}}, i32 2)
// CHECK: call <2 x half> @llvm.nvvm.ldu.global.f.v2f16.p0(ptr {{.*}}, i32 4)
__device__ void nvvm_native_half_types(void *a, void*b, void*c, __fp16* out) {
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type.c b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
index 4aeae953bc1622..511497702ff7f9 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
@@ -177,9 +177,9 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK-LABEL: nvvm_ldg_native_half_types
__device__ void nvvm_ldg_native_half_types(const void *p) {
- // CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0
+ // CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
__nvvm_ldg_h((const __fp16 *)p);
- // CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0
+ // CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
__nvvm_ldg_h2((const __fp16v2 *)p);
}
diff --git a/clang/test/CodeGen/builtins-nvptx.c b/clang/test/CodeGen/builtins-nvptx.c
index 0d0e3ecdb90c9e..3406cbdde2bf88 100644
--- a/clang/test/CodeGen/builtins-nvptx.c
+++ b/clang/test/CodeGen/builtins-nvptx.c
@@ -598,33 +598,33 @@ __device__ void nvvm_atom(float *fp, float f, double *dfp, double df,
// CHECK-LABEL: nvvm_ldg
__device__ void nvvm_ldg(const void *p) {
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
__nvvm_ldg_c((const char *)p);
__nvvm_ldg_uc((const unsigned char *)p);
__nvvm_ldg_sc((const signed char *)p);
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
__nvvm_ldg_s((const short *)p);
__nvvm_ldg_us((const unsigned short *)p);
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_i((const int *)p);
__nvvm_ldg_ui((const unsigned int *)p);
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_l((const long *)p);
__nvvm_ldg_ul((const unsigned long *)p);
- // CHECK: call float @llvm.nvvm.ldg.global.f.f32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load float, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_f((const float *)p);
- // CHECK: call double @llvm.nvvm.ldg.global.f.f64.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load double, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_d((const double *)p);
// In practice, the pointers we pass to __ldg will be aligned as appropriate
@@ -636,9 +636,9 @@ __device__ void nvvm_ldg(const void *p) {
// elements, its alignment is set to number of elements times the alignment of
// its member: n*alignof(t)."
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
typedef char char2 __attribute__((ext_vector_type(2)));
typedef unsigned char uchar2 __attribute__((ext_vector_type(2)));
typedef signed char schar2 __attribute__((ext_vector_type(2)));
@@ -646,9 +646,9 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc2((const uchar2 *)p);
__nvvm_ldg_sc2((const schar2 *)p);
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef char char4 __attribute__((ext_vector_type(4)));
typedef unsigned char uchar4 __attribute__((ext_vector_type(4)));
typedef signed char schar4 __attribute__((ext_vector_type(4)));
@@ -656,59 +656,59 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc4((const uchar4 *)p);
__nvvm_ldg_sc4((const schar4 *)p);
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef short short2 __attribute__((ext_vector_type(2)));
typedef unsigned short ushort2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_s2((const short2 *)p);
__nvvm_ldg_us2((const ushort2 *)p);
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef short short4 __attribute__((ext_vector_type(4)));
typedef unsigned short ushort4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_s4((const short4 *)p);
__nvvm_ldg_us4((const ushort4 *)p);
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef int int2 __attribute__((ext_vector_type(2)));
typedef unsigned int uint2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_i2((const int2 *)p);
__nvvm_ldg_ui2((const uint2 *)p);
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef int int4 __attribute__((ext_vector_type(4)));
typedef unsigned int uint4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_i4((const int4 *)p);
__nvvm_ldg_ui4((const uint4 *)p);
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long2 __attribute__((ext_vector_type(2)));
typedef unsigned long ulong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_l2((const long2 *)p);
__nvvm_ldg_ul2((const ulong2 *)p);
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long longlong2 __attribute__((ext_vector_type(2)));
typedef unsigned long long ulonglong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_ll2((const longlong2 *)p);
__nvvm_ldg_ull2((const ulonglong2 *)p);
- // CHECK: call <2 x float> @llvm.nvvm.ldg.global.f.v2f32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x float>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef float float2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_f2((const float2 *)p);
- // CHECK: call <4 x float> @llvm.nvvm.ldg.global.f.v4f32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x float>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef float float4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_f4((const float4 *)p);
- // CHECK: call <2 x double> @llvm.nvvm.ldg.global.f.v2f64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x double>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef double double2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_d2((const double2 *)p);
}
diff --git a/llvm/include/llvm/IR/IntrinsicsNVVM.td b/llvm/include/llvm/IR/IntrinsicsNVVM.td
index 7b8ffe417fccdb..3cc45adb198e26 100644
--- a/llvm/include/llvm/IR/IntrinsicsNVVM.td
+++ b/llvm/include/llvm/IR/IntrinsicsNVVM.td
@@ -42,6 +42,9 @@
// * llvm.nvvm.ptr.shared.to.gen --> ibid.
// * llvm.nvvm.ptr.constant.to.gen --> ibid.
// * llvm.nvvm.ptr.local.to.gen --> ibid.
+// * llvm.nvvm.ldg.global.i --> load addrspace(1) !load.invariant
+// * llvm.nvvm.ldg.global.f --> ibid.
+// * llvm.nvvm.ldg.global.p --> ibid.
def llvm_global_ptr_ty : LLVMQualPointerType<1>; // (global)ptr
def llvm_shared_ptr_ty : LLVMQualPointerType<3>; // (shared)ptr
@@ -1595,21 +1598,6 @@ def int_nvvm_ldu_global_p : Intrinsic<[llvm_anyptr_ty],
[IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
"llvm.nvvm.ldu.global.p">;
-// Generated within nvvm. Use for ldg on sm_35 or later. Second arg is the
-// pointer's alignment.
-def int_nvvm_ldg_global_i : Intrinsic<[llvm_anyint_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.i">;
-def int_nvvm_ldg_global_f : Intrinsic<[llvm_anyfloat_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.f">;
-def int_nvvm_ldg_global_p : Intrinsic<[llvm_anyptr_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.p">;
-
// Used in nvvm internally to help address space opt and ptx code generation
// This is for params that are passed to kernel functions by pointer by-val.
def int_nvvm_ptr_gen_to_param: Intrinsic<[llvm_anyptr_ty],
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index bb03c9290e4cf4..73882fbc7a251a 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -37,6 +37,7 @@
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
+#include "llvm/IR/Value.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/AMDGPUAddrSpace.h"
#include "llvm/Support/CommandLine.h"
@@ -1301,6 +1302,10 @@ static bool upgradeIntrinsicFunction1(Function *F, Function *&NewFn,
(Name.consume_front("local") || Name.consume_front("shared") ||
Name.consume_front("global") || Name.consume_front("constant")) &&
Name.starts_with(".to.gen");
+ else if (Name.consume_front("ldg.global."))
+ // nvvm.ldg.global.{i,p,f}
+ Expand = (Name.starts_with("i.") || Name.starts_with("f.") ||
+ Name.starts_with("p."));
else
Expand = false;
@@ -2363,6 +2368,15 @@ static Value *upgradeNVVMIntrinsicCall(StringRef Name, CallBase *CI,
Name.consume_front("constant")) &&
Name.starts_with(".to.gen"))) {
Rep = Builder.CreateAddrSpaceCast(CI->getArgOperand(0), CI->getType());
+ } else if (Name.consume_front("ldg.global")) {
+ Value *Ptr = CI->getArgOperand(0);
+ Align PtrAlign = cast<ConstantInt>(CI->getArgOperand(1))->getAlignValue();
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ Value *ASC = Builder.CreateAddrSpaceCast(Ptr, Builder.getPtrTy(1));
+ Instruction *LD = Builder.CreateAlignedLoad(CI->getType(), ASC, PtrAlign);
+ MDNode *MD = MDNode::get(Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+ return LD;
} else {
Intrinsic::ID IID = shouldUpgradeNVPTXBF16Intrinsic(Name);
if (IID != Intrinsic::not_intrinsic &&
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
index 7f942de74bdcc9..4d2e7fb373de5d 100644
--- a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
@@ -126,8 +126,6 @@ void NVPTXDAGToDAGISel::Select(SDNode *N) {
if (tryLoadVector(N))
return;
break;
- case NVPTXISD::LDGV2:
- case NVPTXISD::LDGV4:
case NVPTXISD::LDUV2:
case NVPTXISD::LDUV4:
if (tryLDGLDU(N))
@@ -550,9 +548,6 @@ bool NVPTXDAGToDAGISel::tryIntrinsicChain(SDNode *N) {
switch (IID) {
default:
return false;
- case Intrinsic::nvvm_ldg_global_f:
- case Intrinsic::nvvm_ldg_global_i:
- case Intrinsic::nvvm_ldg_glo...
[truncated]
|
|
@llvm/pr-subscribers-backend-nvptx Author: Alex MacLean (AlexMaclean) ChangesRemove these intrinsics which can be better represented by load instructions with
Patch is 40.27 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/112834.diff 10 Files Affected:
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index f6d7db2c204c12..3b42977b578e15 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -20473,7 +20473,7 @@ static NVPTXMmaInfo getNVPTXMmaInfo(unsigned BuiltinID) {
#undef MMA_VARIANTS_B1_XOR
}
-static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
+static Value *MakeLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
QualType ArgType = E->getArg(0)->getType();
@@ -20484,6 +20484,21 @@ static Value *MakeLdgLdu(unsigned IntrinsicID, CodeGenFunction &CGF,
{Ptr, ConstantInt::get(CGF.Builder.getInt32Ty(), Align.getQuantity())});
}
+static Value *MakeLdg(CodeGenFunction &CGF, const CallExpr *E) {
+ Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
+ QualType ArgType = E->getArg(0)->getType();
+ clang::CharUnits AlignV = CGF.CGM.getNaturalPointeeTypeAlignment(ArgType);
+ llvm::Type *ElemTy = CGF.ConvertTypeForMem(ArgType->getPointeeType());
+
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ auto *ASC = CGF.Builder.CreateAddrSpaceCast(Ptr, CGF.Builder.getPtrTy(1));
+ auto *LD = CGF.Builder.CreateAlignedLoad(ElemTy, ASC, AlignV.getAsAlign());
+ MDNode *MD = MDNode::get(CGF.Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+
+ return LD;
+}
+
static Value *MakeScopedAtomic(unsigned IntrinsicID, CodeGenFunction &CGF,
const CallExpr *E) {
Value *Ptr = CGF.EmitScalarExpr(E->getArg(0));
@@ -20517,9 +20532,11 @@ static Value *MakeHalfType(unsigned IntrinsicID, unsigned BuiltinID,
return nullptr;
}
- if (IntrinsicID == Intrinsic::nvvm_ldg_global_f ||
- IntrinsicID == Intrinsic::nvvm_ldu_global_f)
- return MakeLdgLdu(IntrinsicID, CGF, E);
+ if (BuiltinID == NVPTX::BI__nvvm_ldg_h || BuiltinID == NVPTX::BI__nvvm_ldg_h2)
+ return MakeLdg(CGF, E);
+
+ if (IntrinsicID == Intrinsic::nvvm_ldu_global_f)
+ return MakeLdu(IntrinsicID, CGF, E);
SmallVector<Value *, 16> Args;
auto *F = CGF.CGM.getIntrinsic(IntrinsicID);
@@ -20656,16 +20673,15 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldg_ul2:
case NVPTX::BI__nvvm_ldg_ull:
case NVPTX::BI__nvvm_ldg_ull2:
- // PTX Interoperability section 2.2: "For a vector with an even number of
- // elements, its alignment is set to number of elements times the alignment
- // of its member: n*alignof(t)."
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_i, *this, E);
case NVPTX::BI__nvvm_ldg_f:
case NVPTX::BI__nvvm_ldg_f2:
case NVPTX::BI__nvvm_ldg_f4:
case NVPTX::BI__nvvm_ldg_d:
case NVPTX::BI__nvvm_ldg_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldg_global_f, *this, E);
+ // PTX Interoperability section 2.2: "For a vector with an even number of
+ // elements, its alignment is set to number of elements times the alignment
+ // of its member: n*alignof(t)."
+ return MakeLdg(*this, E);
case NVPTX::BI__nvvm_ldu_c:
case NVPTX::BI__nvvm_ldu_sc:
@@ -20696,13 +20712,13 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
case NVPTX::BI__nvvm_ldu_ul2:
case NVPTX::BI__nvvm_ldu_ull:
case NVPTX::BI__nvvm_ldu_ull2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_i, *this, E);
case NVPTX::BI__nvvm_ldu_f:
case NVPTX::BI__nvvm_ldu_f2:
case NVPTX::BI__nvvm_ldu_f4:
case NVPTX::BI__nvvm_ldu_d:
case NVPTX::BI__nvvm_ldu_d2:
- return MakeLdgLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
+ return MakeLdu(Intrinsic::nvvm_ldu_global_f, *this, E);
case NVPTX::BI__nvvm_atom_cta_add_gen_i:
case NVPTX::BI__nvvm_atom_cta_add_gen_l:
@@ -21176,14 +21192,11 @@ Value *CodeGenFunction::EmitNVPTXBuiltinExpr(unsigned BuiltinID,
return MakeHalfType(Intrinsic::nvvm_fmin_xorsign_abs_f16x2, BuiltinID, E,
*this);
case NVPTX::BI__nvvm_ldg_h:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldg_h2:
- return MakeHalfType(Intrinsic::nvvm_ldg_global_f, BuiltinID, E, *this);
+ return MakeHalfType(Intrinsic::not_intrinsic, BuiltinID, E, *this);
case NVPTX::BI__nvvm_ldu_h:
+ case NVPTX::BI__nvvm_ldu_h2:
return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- case NVPTX::BI__nvvm_ldu_h2: {
- return MakeHalfType(Intrinsic::nvvm_ldu_global_f, BuiltinID, E, *this);
- }
case NVPTX::BI__nvvm_cp_async_ca_shared_global_4:
return MakeCpAsync(Intrinsic::nvvm_cp_async_ca_shared_global_4,
Intrinsic::nvvm_cp_async_ca_shared_global_4_s, *this, E,
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
index b594fc876d4b9e..035c4c6066be24 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type-native.c
@@ -52,8 +52,8 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
// CHECK: call <2 x half> @llvm.nvvm.fmax.ftz.nan.xorsign.abs.f16x2(<2 x half> {{.*}}, <2 x half> {{.*}})
-// CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0(ptr {{.*}}, i32 2)
-// CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0(ptr {{.*}}, i32 4)
+// CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
+// CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
// CHECK: call half @llvm.nvvm.ldu.global.f.f16.p0(ptr {{.*}}, i32 2)
// CHECK: call <2 x half> @llvm.nvvm.ldu.global.f.v2f16.p0(ptr {{.*}}, i32 4)
__device__ void nvvm_native_half_types(void *a, void*b, void*c, __fp16* out) {
diff --git a/clang/test/CodeGen/builtins-nvptx-native-half-type.c b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
index 4aeae953bc1622..511497702ff7f9 100644
--- a/clang/test/CodeGen/builtins-nvptx-native-half-type.c
+++ b/clang/test/CodeGen/builtins-nvptx-native-half-type.c
@@ -177,9 +177,9 @@ typedef __fp16 __fp16v2 __attribute__((ext_vector_type(2)));
// CHECK-LABEL: nvvm_ldg_native_half_types
__device__ void nvvm_ldg_native_half_types(const void *p) {
- // CHECK: call half @llvm.nvvm.ldg.global.f.f16.p0
+ // CHECK: load half, ptr addrspace(1) {{.*}}, align 2, !invariant.load
__nvvm_ldg_h((const __fp16 *)p);
- // CHECK: call <2 x half> @llvm.nvvm.ldg.global.f.v2f16.p0
+ // CHECK: load <2 x half>, ptr addrspace(1) {{.*}}, align 4, !invariant.load
__nvvm_ldg_h2((const __fp16v2 *)p);
}
diff --git a/clang/test/CodeGen/builtins-nvptx.c b/clang/test/CodeGen/builtins-nvptx.c
index 0d0e3ecdb90c9e..3406cbdde2bf88 100644
--- a/clang/test/CodeGen/builtins-nvptx.c
+++ b/clang/test/CodeGen/builtins-nvptx.c
@@ -598,33 +598,33 @@ __device__ void nvvm_atom(float *fp, float f, double *dfp, double df,
// CHECK-LABEL: nvvm_ldg
__device__ void nvvm_ldg(const void *p) {
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
- // CHECK: call i8 @llvm.nvvm.ldg.global.i.i8.p0(ptr {{%[0-9]+}}, i32 1)
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
+ // CHECK: load i8, ptr addrspace(1) {{%[0-9]+}}, align 1, !invariant.load
__nvvm_ldg_c((const char *)p);
__nvvm_ldg_uc((const unsigned char *)p);
__nvvm_ldg_sc((const signed char *)p);
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call i16 @llvm.nvvm.ldg.global.i.i16.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load i16, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
__nvvm_ldg_s((const short *)p);
__nvvm_ldg_us((const unsigned short *)p);
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_i((const int *)p);
__nvvm_ldg_ui((const unsigned int *)p);
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP32: call i32 @llvm.nvvm.ldg.global.i.i32.p0(ptr {{%[0-9]+}}, i32 4)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call i64 @llvm.nvvm.ldg.global.i.i64.p0(ptr {{%[0-9]+}}, i32 8)
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP32: load i32, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load i64, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_l((const long *)p);
__nvvm_ldg_ul((const unsigned long *)p);
- // CHECK: call float @llvm.nvvm.ldg.global.f.f32.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load float, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
__nvvm_ldg_f((const float *)p);
- // CHECK: call double @llvm.nvvm.ldg.global.f.f64.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load double, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
__nvvm_ldg_d((const double *)p);
// In practice, the pointers we pass to __ldg will be aligned as appropriate
@@ -636,9 +636,9 @@ __device__ void nvvm_ldg(const void *p) {
// elements, its alignment is set to number of elements times the alignment of
// its member: n*alignof(t)."
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
- // CHECK: call <2 x i8> @llvm.nvvm.ldg.global.i.v2i8.p0(ptr {{%[0-9]+}}, i32 2)
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
+ // CHECK: load <2 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 2, !invariant.load
typedef char char2 __attribute__((ext_vector_type(2)));
typedef unsigned char uchar2 __attribute__((ext_vector_type(2)));
typedef signed char schar2 __attribute__((ext_vector_type(2)));
@@ -646,9 +646,9 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc2((const uchar2 *)p);
__nvvm_ldg_sc2((const schar2 *)p);
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <4 x i8> @llvm.nvvm.ldg.global.i.v4i8.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <4 x i8>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef char char4 __attribute__((ext_vector_type(4)));
typedef unsigned char uchar4 __attribute__((ext_vector_type(4)));
typedef signed char schar4 __attribute__((ext_vector_type(4)));
@@ -656,59 +656,59 @@ __device__ void nvvm_ldg(const void *p) {
__nvvm_ldg_uc4((const uchar4 *)p);
__nvvm_ldg_sc4((const schar4 *)p);
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
- // CHECK: call <2 x i16> @llvm.nvvm.ldg.global.i.v2i16.p0(ptr {{%[0-9]+}}, i32 4)
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
+ // CHECK: load <2 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 4, !invariant.load
typedef short short2 __attribute__((ext_vector_type(2)));
typedef unsigned short ushort2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_s2((const short2 *)p);
__nvvm_ldg_us2((const ushort2 *)p);
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <4 x i16> @llvm.nvvm.ldg.global.i.v4i16.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <4 x i16>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef short short4 __attribute__((ext_vector_type(4)));
typedef unsigned short ushort4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_s4((const short4 *)p);
__nvvm_ldg_us4((const ushort4 *)p);
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // CHECK: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // CHECK: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef int int2 __attribute__((ext_vector_type(2)));
typedef unsigned int uint2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_i2((const int2 *)p);
__nvvm_ldg_ui2((const uint2 *)p);
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <4 x i32> @llvm.nvvm.ldg.global.i.v4i32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <4 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef int int4 __attribute__((ext_vector_type(4)));
typedef unsigned int uint4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_i4((const int4 *)p);
__nvvm_ldg_ui4((const uint4 *)p);
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP32: call <2 x i32> @llvm.nvvm.ldg.global.i.v2i32.p0(ptr {{%[0-9]+}}, i32 8)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // LP64: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP32: load <2 x i32>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // LP64: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long2 __attribute__((ext_vector_type(2)));
typedef unsigned long ulong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_l2((const long2 *)p);
__nvvm_ldg_ul2((const ulong2 *)p);
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
- // CHECK: call <2 x i64> @llvm.nvvm.ldg.global.i.v2i64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
+ // CHECK: load <2 x i64>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef long long longlong2 __attribute__((ext_vector_type(2)));
typedef unsigned long long ulonglong2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_ll2((const longlong2 *)p);
__nvvm_ldg_ull2((const ulonglong2 *)p);
- // CHECK: call <2 x float> @llvm.nvvm.ldg.global.f.v2f32.p0(ptr {{%[0-9]+}}, i32 8)
+ // CHECK: load <2 x float>, ptr addrspace(1) {{%[0-9]+}}, align 8, !invariant.load
typedef float float2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_f2((const float2 *)p);
- // CHECK: call <4 x float> @llvm.nvvm.ldg.global.f.v4f32.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <4 x float>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef float float4 __attribute__((ext_vector_type(4)));
__nvvm_ldg_f4((const float4 *)p);
- // CHECK: call <2 x double> @llvm.nvvm.ldg.global.f.v2f64.p0(ptr {{%[0-9]+}}, i32 16)
+ // CHECK: load <2 x double>, ptr addrspace(1) {{%[0-9]+}}, align 16, !invariant.load
typedef double double2 __attribute__((ext_vector_type(2)));
__nvvm_ldg_d2((const double2 *)p);
}
diff --git a/llvm/include/llvm/IR/IntrinsicsNVVM.td b/llvm/include/llvm/IR/IntrinsicsNVVM.td
index 7b8ffe417fccdb..3cc45adb198e26 100644
--- a/llvm/include/llvm/IR/IntrinsicsNVVM.td
+++ b/llvm/include/llvm/IR/IntrinsicsNVVM.td
@@ -42,6 +42,9 @@
// * llvm.nvvm.ptr.shared.to.gen --> ibid.
// * llvm.nvvm.ptr.constant.to.gen --> ibid.
// * llvm.nvvm.ptr.local.to.gen --> ibid.
+// * llvm.nvvm.ldg.global.i --> load addrspace(1) !load.invariant
+// * llvm.nvvm.ldg.global.f --> ibid.
+// * llvm.nvvm.ldg.global.p --> ibid.
def llvm_global_ptr_ty : LLVMQualPointerType<1>; // (global)ptr
def llvm_shared_ptr_ty : LLVMQualPointerType<3>; // (shared)ptr
@@ -1595,21 +1598,6 @@ def int_nvvm_ldu_global_p : Intrinsic<[llvm_anyptr_ty],
[IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
"llvm.nvvm.ldu.global.p">;
-// Generated within nvvm. Use for ldg on sm_35 or later. Second arg is the
-// pointer's alignment.
-def int_nvvm_ldg_global_i : Intrinsic<[llvm_anyint_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.i">;
-def int_nvvm_ldg_global_f : Intrinsic<[llvm_anyfloat_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.f">;
-def int_nvvm_ldg_global_p : Intrinsic<[llvm_anyptr_ty],
- [llvm_anyptr_ty, llvm_i32_ty],
- [IntrReadMem, IntrArgMemOnly, IntrNoCallback, IntrWillReturn, NoCapture<ArgIndex<0>>],
- "llvm.nvvm.ldg.global.p">;
-
// Used in nvvm internally to help address space opt and ptx code generation
// This is for params that are passed to kernel functions by pointer by-val.
def int_nvvm_ptr_gen_to_param: Intrinsic<[llvm_anyptr_ty],
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp
index bb03c9290e4cf4..73882fbc7a251a 100644
--- a/llvm/lib/IR/AutoUpgrade.cpp
+++ b/llvm/lib/IR/AutoUpgrade.cpp
@@ -37,6 +37,7 @@
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
+#include "llvm/IR/Value.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/AMDGPUAddrSpace.h"
#include "llvm/Support/CommandLine.h"
@@ -1301,6 +1302,10 @@ static bool upgradeIntrinsicFunction1(Function *F, Function *&NewFn,
(Name.consume_front("local") || Name.consume_front("shared") ||
Name.consume_front("global") || Name.consume_front("constant")) &&
Name.starts_with(".to.gen");
+ else if (Name.consume_front("ldg.global."))
+ // nvvm.ldg.global.{i,p,f}
+ Expand = (Name.starts_with("i.") || Name.starts_with("f.") ||
+ Name.starts_with("p."));
else
Expand = false;
@@ -2363,6 +2368,15 @@ static Value *upgradeNVVMIntrinsicCall(StringRef Name, CallBase *CI,
Name.consume_front("constant")) &&
Name.starts_with(".to.gen"))) {
Rep = Builder.CreateAddrSpaceCast(CI->getArgOperand(0), CI->getType());
+ } else if (Name.consume_front("ldg.global")) {
+ Value *Ptr = CI->getArgOperand(0);
+ Align PtrAlign = cast<ConstantInt>(CI->getArgOperand(1))->getAlignValue();
+ // Use addrspace(1) for NVPTX ADDRESS_SPACE_GLOBAL
+ Value *ASC = Builder.CreateAddrSpaceCast(Ptr, Builder.getPtrTy(1));
+ Instruction *LD = Builder.CreateAlignedLoad(CI->getType(), ASC, PtrAlign);
+ MDNode *MD = MDNode::get(Builder.getContext(), {});
+ LD->setMetadata(LLVMContext::MD_invariant_load, MD);
+ return LD;
} else {
Intrinsic::ID IID = shouldUpgradeNVPTXBF16Intrinsic(Name);
if (IID != Intrinsic::not_intrinsic &&
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
index 7f942de74bdcc9..4d2e7fb373de5d 100644
--- a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
@@ -126,8 +126,6 @@ void NVPTXDAGToDAGISel::Select(SDNode *N) {
if (tryLoadVector(N))
return;
break;
- case NVPTXISD::LDGV2:
- case NVPTXISD::LDGV4:
case NVPTXISD::LDUV2:
case NVPTXISD::LDUV4:
if (tryLDGLDU(N))
@@ -550,9 +548,6 @@ bool NVPTXDAGToDAGISel::tryIntrinsicChain(SDNode *N) {
switch (IID) {
default:
return false;
- case Intrinsic::nvvm_ldg_global_f:
- case Intrinsic::nvvm_ldg_global_i:
- case Intrinsic::nvvm_ldg_glo...
[truncated]
|
|
✅ With the latest revision this PR passed the C/C++ code formatter. |
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Oct 18, 2024
justinfargnoli
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Oct 21, 2024
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/88/builds/3935 Here is the relevant piece of the build log for the reference |
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Remove these intrinsics which can be better represented by load instructions with `!invariant.load` metadata: - llvm.nvvm.ldg.global.i - llvm.nvvm.ldg.global.f - llvm.nvvm.ldg.global.p
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Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531
vchuravy
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Feb 18, 2025
Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531 --------- Co-authored-by: Gabriel Baraldi <baraldigabriel@gmail.com>
KristofferC
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Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531 --------- Co-authored-by: Gabriel Baraldi <baraldigabriel@gmail.com> (cherry picked from commit 29da86b)
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Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531 --------- Co-authored-by: Gabriel Baraldi <baraldigabriel@gmail.com> (cherry picked from commit 29da86b)
KristofferC
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Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531 --------- Co-authored-by: Gabriel Baraldi <baraldigabriel@gmail.com> (cherry picked from commit 29da86b)
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Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531 --------- Co-authored-by: Gabriel Baraldi <baraldigabriel@gmail.com> (cherry picked from commit 29da86b)
modularbot
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…C (#50241) llvm/llvm-project#112834 removes some of the ldg functions and simplifies them. This does the same and unblocks the llvm bump. Closes KERN-733 LINALG_ORIG_REV_ID: 62e96df7f8430b7cd495a997d1db4a14255192b9
lriggs1311
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…C (#50241) llvm/llvm-project#112834 removes some of the ldg functions and simplifies them. This does the same and unblocks the llvm bump. Closes KERN-733 LINALG_ORIG_REV_ID: 62e96df7f8430b7cd495a997d1db4a14255192b9
modularbot
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…C (#50241) llvm/llvm-project#112834 removes some of the ldg functions and simplifies them. This does the same and unblocks the llvm bump. Closes KERN-733 GPU_TEST_ORIG_REV_ID: 62e96df7f8430b7cd495a997d1db4a14255192b9
lriggs1311
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…C (#50241) llvm/llvm-project#112834 removes some of the ldg functions and simplifies them. This does the same and unblocks the llvm bump. Closes KERN-733 GPU_TEST_ORIG_REV_ID: 62e96df7f8430b7cd495a997d1db4a14255192b9
KristofferC
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Other backends (in this case NVPTX) require that `invariant.load` metadata is maintained to generate non-coherent loads. Currently, we unconditionally strip that metadata from all loads, since our other uses of it may have become invalid. x-ref: llvm/llvm-project#112834 JuliaGPU/CUDA.jl#2531 --------- Co-authored-by: Gabriel Baraldi <baraldigabriel@gmail.com> (cherry picked from commit 29da86b)
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Remove these intrinsics which can be better represented by load instructions with
!invariant.loadmetadata: