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[CIR] Add support for __sync_swap builtin #1971

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Merged
merged 1 commit into from
Nov 10, 2025
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[CIR] Add support for __sync_swap builtin #1971

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2 changes: 1 addition & 1 deletion clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2119,7 +2119,7 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
case Builtin::BI__sync_swap_4:
case Builtin::BI__sync_swap_8:
case Builtin::BI__sync_swap_16:
llvm_unreachable("BI__sync_swap1 like NYI");
return emitBinaryAtomic(*this, cir::AtomicFetchKind::Xchg, E);

case Builtin::BI__sync_lock_test_and_set_1:
case Builtin::BI__sync_lock_test_and_set_2:
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96 changes: 96 additions & 0 deletions clang/test/CIR/CodeGen/atomic.cpp
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Expand Up @@ -1271,3 +1271,99 @@ void lock_test_and_set(unsigned short* a, short b) {
void lock_test_and_set(unsigned char* a, char b) {
unsigned char c = __sync_lock_test_and_set(a, b);
}

// CHECK-LABEL: @_Z4swapPii
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!s32i>, {{.*}} : !s32i, seq_cst) fetch_first : !s32i

// LLVM-LABEL: @_Z4swapPii
// LLVM: atomicrmw xchg ptr {{.*}}, i32 {{.*}} seq_cst, align 4

// OGCG-LABEL: @_Z4swapPii
// OGCG: atomicrmw xchg ptr {{.*}}, i32 {{.*}} seq_cst, align 4
void swap(int* a, int b) {
int c = __sync_swap(a, b);
}

// CHECK-LABEL: @_Z4swapPll
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!s64i>, {{.*}} : !s64i, seq_cst) fetch_first : !s64i

// LLVM-LABEL: @_Z4swapPll
// LLVM: atomicrmw xchg ptr {{.*}}, i64 {{.*}} seq_cst, align 8

// OGCG-LABEL: @_Z4swapPll
// OGCG: atomicrmw xchg ptr {{.*}}, i64 {{.*}} seq_cst, align 8
void swap(long* a, long b) {
long c = __sync_swap(a, b);
}

// CHECK-LABEL: @_Z4swapPss
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!s16i>, {{.*}} : !s16i, seq_cst) fetch_first : !s16i

// LLVM-LABEL: @_Z4swapPss
// LLVM: atomicrmw xchg ptr {{.*}}, i16 {{.*}} seq_cst, align 2

// OGCG-LABEL: @_Z4swapPss
// OGCG: atomicrmw xchg ptr {{.*}}, i16 {{.*}} seq_cst, align 2
void swap(short* a, short b) {
short c = __sync_swap(a, 2);
}

// CHECK-LABEL: @_Z4swapPcc
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!s8i>, {{.*}} : !s8i, seq_cst) fetch_first : !s8i

// LLVM-LABEL: @_Z4swapPcc
// LLVM: atomicrmw xchg ptr {{.*}}, i8 {{.*}} seq_cst, align 1

// OGCG-LABEL: @_Z4swapPcc
// OGCG: atomicrmw xchg ptr {{.*}}, i8 {{.*}} seq_cst, align 1
void swap(char* a, char b) {
char c = __sync_swap(a, b);
}

// CHECK-LABEL: @_Z4swapPji
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!u32i>, {{.*}} : !u32i, seq_cst) fetch_first : !u32i

// LLVM-LABEL: @_Z4swapPji
// LLVM: atomicrmw xchg ptr {{.*}}, i32 {{.*}} seq_cst, align 4

// OGCG-LABEL: @_Z4swapPji
// OGCG: atomicrmw xchg ptr {{.*}}, i32 {{.*}} seq_cst, align 4
void swap(unsigned int* a, int b) {
unsigned int c = __sync_swap(a, b);
}

// CHECK-LABEL: @_Z4swapPml
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!u64i>, {{.*}} : !u64i, seq_cst) fetch_first : !u64i

// LLVM-LABEL: @_Z4swapPml
// LLVM: atomicrmw xchg ptr {{.*}}, i64 {{.*}} seq_cst, align 8

// OGCG-LABEL: @_Z4swapPml
// OGCG: atomicrmw xchg ptr {{.*}}, i64 {{.*}} seq_cst, align 8
void swap(unsigned long* a, long b) {
unsigned long c = __sync_swap(a, b);
}

// CHECK-LABEL: @_Z4swapPts
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!u16i>, {{.*}} : !u16i, seq_cst) fetch_first : !u16i
//
// LLVM-LABEL: @_Z4swapPts
// LLVM: atomicrmw xchg ptr {{.*}}, i16 {{.*}} seq_cst, align 2

// OGCG-LABEL: @_Z4swapPts
// OGCG: atomicrmw xchg ptr {{.*}}, i16 {{.*}} seq_cst, align 2
void swap(unsigned short* a, short b) {
unsigned long long c = __sync_swap(a, b);
}

// CHECK-LABEL: @_Z4swapPhc
// CHECK: cir.atomic.fetch(xchg, {{.*}} : !cir.ptr<!u8i>, {{.*}} : !u8i, seq_cst) fetch_first : !u8i

// LLVM-LABEL: @_Z4swapPhc
// LLVM: atomicrmw xchg ptr {{.*}}, i8 {{.*}} seq_cst, align 1

// OGCG-LABEL: @_Z4swapPhc
// OGCG: atomicrmw xchg ptr {{.*}}, i8 {{.*}} seq_cst, align 1
void swap(unsigned char* a, char b) {
unsigned char c = __sync_swap(a, b);
}
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