[WebAssembly] Gate unimplemented SIMD ops on flag
Summary:
Gates v128.const, f32x4.sqrt, f32x4.div, i8x16.extract_lane_u, and
i16x8.extract_lane_u on the --wasm-enable-unimplemented-simd flag,
since these ops are not implemented yet in V8.
Reviewers: aheejin, dschuff
Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits
Differential Revision: https://reviews.llvm.org/D55904
llvm-svn: 349720
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
index a038215..50b2969e 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
@@ -224,6 +224,12 @@
}
}
+ // Expand additional SIMD ops that V8 hasn't implemented yet
+ if (Subtarget->hasSIMD128() && !EnableUnimplementedWasmSIMDInstrs) {
+ setOperationAction(ISD::FSQRT, MVT::v4f32, Expand);
+ setOperationAction(ISD::FDIV, MVT::v4f32, Expand);
+ }
+
// Custom lower lane accesses to expand out variable indices
if (Subtarget->hasSIMD128()) {
for (auto T : {MVT::v16i8, MVT::v8i16, MVT::v4i32, MVT::v4f32}) {