[WebAssembly] Add bulk memory target feature

Summary: Also clean up some preexisting target feature code.

Reviewers: aheejin

Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, jfb

Differential Revision: https://reviews.llvm.org/D57495

llvm-svn: 352793

clang/include/clang/Driver/Options.td

@@ -2155,6 +2155,8 @@ def msign_ext : Flag<["-"], "msign-ext">, Group<m_wasm_Features_Group>;
 def mno_sign_ext : Flag<["-"], "mno-sign-ext">, Group<m_wasm_Features_Group>;
 def mexception_handing : Flag<["-"], "mexception-handling">, Group<m_wasm_Features_Group>;
 def mno_exception_handing : Flag<["-"], "mno-exception-handling">, Group<m_wasm_Features_Group>;
+def mbulk_memory : Flag<["-"], "mbulk-memory">, Group<m_wasm_Features_Group>;
+def mno_bulk_memory : Flag<["-"], "mno-bulk-memory">, Group<m_wasm_Features_Group>;
 
 def mamdgpu_debugger_abi : Joined<["-"], "mamdgpu-debugger-abi=">,
   Flags<[HelpHidden]>,

clang/lib/Basic/Targets/WebAssembly.cpp

@@ -40,6 +40,7 @@ bool WebAssemblyTargetInfo::hasFeature(StringRef Feature) const {
       .Case("nontrapping-fptoint", HasNontrappingFPToInt)
       .Case("sign-ext", HasSignExt)
       .Case("exception-handling", HasExceptionHandling)
+      .Case("bulk-memory", HasBulkMemory)
       .Default(false);
 }
 
@@ -59,6 +60,14 @@ void WebAssemblyTargetInfo::getTargetDefines(const LangOptions &Opts,
     Builder.defineMacro("__wasm_simd128__");
   if (SIMDLevel >= UnimplementedSIMD128)
     Builder.defineMacro("__wasm_unimplemented_simd128__");
+  if (HasNontrappingFPToInt)
+    Builder.defineMacro("__wasm_nontrapping_fptoint__");
+  if (HasSignExt)
+    Builder.defineMacro("__wasm_sign_ext__");
+  if (HasExceptionHandling)
+    Builder.defineMacro("__wasm_exception_handling__");
+  if (HasBulkMemory)
+    Builder.defineMacro("__wasm_bulk_memory__");
 }
 
 void WebAssemblyTargetInfo::setSIMDLevel(llvm::StringMap<bool> &Features,
@@ -93,6 +102,8 @@ bool WebAssemblyTargetInfo::initFeatureMap(
     Features["sign-ext"] = true;
   if (HasExceptionHandling)
     Features["exception-handling"] = true;
+  if (HasBulkMemory)
+    Features["bulk-memory"] = true;
 
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
 }
@@ -140,6 +151,14 @@ bool WebAssemblyTargetInfo::handleTargetFeatures(
       HasExceptionHandling = false;
       continue;
     }
+    if (Feature == "+bulk-memory") {
+      HasBulkMemory = true;
+      continue;
+    }
+    if (Feature == "-bulk-memory") {
+      HasBulkMemory = false;
+      continue;
+    }
 
     Diags.Report(diag::err_opt_not_valid_with_opt)
         << Feature << "-target-feature";

clang/lib/Basic/Targets/WebAssembly.h

@@ -30,14 +30,14 @@ class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public TargetInfo {
     UnimplementedSIMD128,
   } SIMDLevel = NoSIMD;
 
-  bool HasNontrappingFPToInt;
-  bool HasSignExt;
-  bool HasExceptionHandling;
+  bool HasNontrappingFPToInt = false;
+  bool HasSignExt = false;
+  bool HasExceptionHandling = false;
+  bool HasBulkMemory = false;
 
 public:
   explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &)
-      : TargetInfo(T), SIMDLevel(NoSIMD), HasNontrappingFPToInt(false),
-        HasSignExt(false), HasExceptionHandling(false) {
+      : TargetInfo(T) {
     NoAsmVariants = true;
     SuitableAlign = 128;
     LargeArrayMinWidth = 128;

clang/test/Preprocessor/wasm-target-features.c

@@ -17,28 +17,72 @@
 // SIMD128-UNIMPLEMENTED:#define __wasm_unimplemented_simd128__ 1{{$}}
 //
 // RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -mnontrapping-fptoint \
+// RUN:   | FileCheck %s -check-prefix=NONTRAPPING-FPTOINT
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -mnontrapping-fptoint \
+// RUN:   | FileCheck %s -check-prefix=NONTRAPPING-FPTOINT
+//
+// NONTRAPPING-FPTOINT:#define __wasm_nontrapping_fptoint__ 1{{$}}
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -msign-ext \
+// RUN:   | FileCheck %s -check-prefix=SIGN-EXT
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -msign-ext \
+// RUN:   | FileCheck %s -check-prefix=SIGN-EXT
+//
+// SIGN-EXT:#define __wasm_sign_ext__ 1{{$}}
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -mexception-handling \
+// RUN:   | FileCheck %s -check-prefix=EXCEPTION-HANDLING
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -mexception-handling \
+// RUN:   | FileCheck %s -check-prefix=EXCEPTION-HANDLING
+//
+// EXCEPTION-HANDLING:#define __wasm_exception_handling__ 1{{$}}
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -mbulk-memory \
+// RUN:   | FileCheck %s -check-prefix=BULK-MEMORY
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -mbulk-memory \
+// RUN:   | FileCheck %s -check-prefix=BULK-MEMORY
+//
+// BULK-MEMORY:#define __wasm_bulk_memory__ 1{{$}}
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
 // RUN:     -target wasm32-unknown-unknown -mcpu=mvp \
 // RUN:   | FileCheck %s -check-prefix=MVP
 // RUN: %clang -E -dM %s -o - 2>&1 \
 // RUN:     -target wasm64-unknown-unknown -mcpu=mvp \
 // RUN:   | FileCheck %s -check-prefix=MVP
 //
 // MVP-NOT:#define __wasm_simd128__
+// MVP-NOT:#define __wasm_unimplemented_simd128__
+// MVP-NOT:#define __wasm_nontrapping_fptoint__
+// MVP-NOT:#define __wasm_sign_ext__
+// MVP-NOT:#define __wasm_exception_handling__
+// MVP-NOT:#define __wasm_bulk_memory__
 //
 // RUN: %clang -E -dM %s -o - 2>&1 \
 // RUN:     -target wasm32-unknown-unknown -mcpu=bleeding-edge \
-// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE
+// RUN:   | FileCheck %s -check-prefix=BLEEDING-EDGE
 // RUN: %clang -E -dM %s -o - 2>&1 \
 // RUN:     -target wasm64-unknown-unknown -mcpu=bleeding-edge \
-// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE
+// RUN:   | FileCheck %s -check-prefix=BLEEDING-EDGE
 //
-// BLEEDING_EDGE:#define __wasm_simd128__ 1{{$}}
+// BLEEDING-EDGE:#define __wasm_nontrapping_fptoint__ 1{{$}}
+// BLEEDING-EDGE:#define __wasm_sign_ext__ 1{{$}}
+// BLEEDING-EDGE:#define __wasm_simd128__ 1{{$}}
+// BLEEDING-EDGE-NOT:#define __wasm_unimplemented_simd128__ 1{{$}}
 //
 // RUN: %clang -E -dM %s -o - 2>&1 \
 // RUN:     -target wasm32-unknown-unknown -mcpu=bleeding-edge -mno-simd128 \
-// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE_NO_SIMD128
+// RUN:   | FileCheck %s -check-prefix=BLEEDING-EDGE-NO-SIMD128
 // RUN: %clang -E -dM %s -o - 2>&1 \
 // RUN:     -target wasm64-unknown-unknown -mcpu=bleeding-edge -mno-simd128 \
-// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE_NO_SIMD128
+// RUN:   | FileCheck %s -check-prefix=BLEEDING-EDGE-NO-SIMD128
 //
-// BLEEDING_EDGE_NO_SIMD128-NOT:#define __wasm_simd128__
+// BLEEDING-EDGE-NO-SIMD128-NOT:#define __wasm_simd128__

llvm/lib/Target/WebAssembly/WebAssembly.td

@@ -47,6 +47,10 @@ def FeatureExceptionHandling :
       SubtargetFeature<"exception-handling", "HasExceptionHandling", "true",
                        "Enable Wasm exception handling">;
 
+def FeatureBulkMemory :
+      SubtargetFeature<"bulk-memory", "HasBulkMemory", "true",
+                       "Enable bulk memory operations">;
+
 //===----------------------------------------------------------------------===//
 // Architectures.
 //===----------------------------------------------------------------------===//

llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td

@@ -16,40 +16,48 @@
 //===----------------------------------------------------------------------===//
 
 def HasAddr32 : Predicate<"!Subtarget->hasAddr64()">;
+
 def HasAddr64 : Predicate<"Subtarget->hasAddr64()">;
-def HasSIMD128 : Predicate<"Subtarget->hasSIMD128()">,
-                           AssemblerPredicate<"FeatureSIMD128", "simd128">;
+
+def HasSIMD128 :
+    Predicate<"Subtarget->hasSIMD128()">,
+    AssemblerPredicate<"FeatureSIMD128", "simd128">;
+
 def HasUnimplementedSIMD128 :
     Predicate<"Subtarget->hasUnimplementedSIMD128()">,
     AssemblerPredicate<"FeatureUnimplementedSIMD128", "unimplemented-simd128">;
-def HasAtomics : Predicate<"Subtarget->hasAtomics()">,
-                           AssemblerPredicate<"FeatureAtomics", "atomics">;
+
+def HasAtomics :
+    Predicate<"Subtarget->hasAtomics()">,
+    AssemblerPredicate<"FeatureAtomics", "atomics">;
+
 def HasNontrappingFPToInt :
     Predicate<"Subtarget->hasNontrappingFPToInt()">,
-              AssemblerPredicate<"FeatureNontrappingFPToInt",
-                                 "nontrapping-fptoint">;
+    AssemblerPredicate<"FeatureNontrappingFPToInt", "nontrapping-fptoint">;
+
 def NotHasNontrappingFPToInt :
     Predicate<"!Subtarget->hasNontrappingFPToInt()">,
-              AssemblerPredicate<"!FeatureNontrappingFPToInt",
-                                 "nontrapping-fptoint">;
+    AssemblerPredicate<"!FeatureNontrappingFPToInt", "nontrapping-fptoint">;
+
 def HasSignExt :
     Predicate<"Subtarget->hasSignExt()">,
-              AssemblerPredicate<"FeatureSignExt",
-                                 "sign-ext">;
+    AssemblerPredicate<"FeatureSignExt", "sign-ext">;
+
 def NotHasSignExt :
     Predicate<"!Subtarget->hasSignExt()">,
-              AssemblerPredicate<"!FeatureSignExt",
-                                 "sign-ext">;
+    AssemblerPredicate<"!FeatureSignExt", "sign-ext">;
 
 def HasExceptionHandling :
     Predicate<"Subtarget->hasExceptionHandling()">,
-              AssemblerPredicate<"FeatureExceptionHandling",
-                                 "exception-handling">;
+    AssemblerPredicate<"FeatureExceptionHandling", "exception-handling">;
 
 def NotHasExceptionHandling :
     Predicate<"!Subtarget->hasExceptionHandling()">,
-              AssemblerPredicate<"!FeatureExceptionHandling",
-                                 "exception-handling">;
+    AssemblerPredicate<"!FeatureExceptionHandling", "exception-handling">;
+
+def HasBulkMemory :
+    Predicate<"Subtarget->hasBulkMemory()">,
+    AssemblerPredicate<"FeatureBulkMemory", "bulk-memory">;
 
 //===----------------------------------------------------------------------===//
 // WebAssembly-specific DAG Node Types.

llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h

@@ -38,6 +38,7 @@ class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo {
   bool HasNontrappingFPToInt = false;
   bool HasSignExt = false;
   bool HasExceptionHandling = false;
+  bool HasBulkMemory = false;
 
   /// String name of used CPU.
   std::string CPUString;
@@ -89,6 +90,7 @@ class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo {
   bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
   bool hasSignExt() const { return HasSignExt; }
   bool hasExceptionHandling() const { return HasExceptionHandling; }
+  bool hasBulkMemory() const { return HasBulkMemory; }
 
   /// Parses features string setting specified subtarget options. Definition of
   /// function is auto generated by tblgen.

llvm/test/CodeGen/WebAssembly/bulk-memory.ll

@@ -0,0 +1,7 @@
+; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -mattr=+bulk-memory
+
+; Test that basic bulk memory codegen works correctly
+; TODO: implement basic bulk memory codegen
+
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown"