use v8i32 as optimal mem type over v8f32 if AVX2 is enabled. Similar to SSE2 vs SSE1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148109 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index cdeee0ba87413d77561ad7fef3d57d31df17a611..b5c3c0980bd6b0c5ee93935c4c7236a517e80e94 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1327,9 +1327,12 @@ X86TargetLowering::getOptimalMemOpType(uint64_t Size,
          ((DstAlign == 0 || DstAlign >= 16) &&
           (SrcAlign == 0 || SrcAlign >= 16))) &&
         Subtarget->getStackAlignment() >= 16) {
-      if (Subtarget->hasAVX() &&
-          Subtarget->getStackAlignment() >= 32)
-        return MVT::v8f32;
+      if (Subtarget->getStackAlignment() >= 32) {
+        if (Subtarget->hasAVX2())
+          return MVT::v8i32;
+        if (Subtarget->hasAVX())
+          return MVT::v8f32;
+      }
       if (Subtarget->hasSSE2())
         return MVT::v4i32;
       if (Subtarget->hasSSE1())