Check SSSE3 instead of SSE4.1
- All shuffle insns required, especially PSHUB, are added in SSSE3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166086 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index fb0fdb3..a205aef 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -15477,11 +15477,11 @@
ISD::LoadExtType Ext = Ld->getExtensionType();
// If this is a vector EXT Load then attempt to optimize it using a
- // shuffle. We need SSE4 for the shuffles.
+ // shuffle. We need SSSE3 shuffles.
// TODO: It is possible to support ZExt by zeroing the undef values
// during the shuffle phase or after the shuffle.
if (RegVT.isVector() && RegVT.isInteger() &&
- Ext == ISD::EXTLOAD && Subtarget->hasSSE41()) {
+ Ext == ISD::EXTLOAD && Subtarget->hasSSSE3()) {
assert(MemVT != RegVT && "Cannot extend to the same type");
assert(MemVT.isVector() && "Must load a vector from memory");