From: Thomas Lively <tlively@google.com>
Date: Fri, 1 Mar 2019 17:43:55 +0000 (+0000)
Subject: Revert "[WebAssembly] Lower SIMD shifts since they are fixed in V8"
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=eb716ca2564092f3c9bd3b8a394b45da414370a7;p=llvm

Revert "[WebAssembly] Lower SIMD shifts since they are fixed in V8"

They weren't fixed in V8. Oops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@355208 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
index 4255e0eb158..50bd5a94f4b 100644
--- a/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
@@ -1291,6 +1291,11 @@ SDValue WebAssemblyTargetLowering::LowerShift(SDValue Op,
   // Only manually lower vector shifts
   assert(Op.getSimpleValueType().isVector());
 
+  // Expand all vector shifts until V8 fixes its implementation
+  // TODO: remove this once V8 is fixed
+  if (!Subtarget->hasUnimplementedSIMD128())
+    return unrollVectorShift(Op, DAG);
+
   // Unroll non-splat vector shifts
   BuildVectorSDNode *ShiftVec;
   SDValue SplatVal;