[WebAssembly] Add simd128-unimplemented subtarget feature

This is a second attempt at r350778, which was reverted in
r350789. The only change is that the unimplemented-simd128 feature has
been renamed simd128-unimplemented, since naming it
unimplemented-simd128 somehow made the simd128 feature flag enable the
unimplemented-simd128 feature on Windows.

llvm-svn: 350791

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
index b170dbff3b3..bd2e995d286 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
@@ -30,6 +30,7 @@ namespace llvm {
 
 class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo {
   bool HasSIMD128;
+  bool HasSIMD128Unimplemented;
   bool HasAtomics;
   bool HasNontrappingFPToInt;
   bool HasSignExt;
@@ -78,6 +79,7 @@ public:
   // Predicates used by WebAssemblyInstrInfo.td.
   bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
   bool hasSIMD128() const { return HasSIMD128; }
+  bool hasSIMD128Unimplemented() const { return HasSIMD128Unimplemented; }
   bool hasAtomics() const { return HasAtomics; }
   bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
   bool hasSignExt() const { return HasSignExt; }