commit 882cdfde516fb97a1fda1a3bbc85b1792aa7659c
author Evan Cheng <evan.cheng@apple.com> Mon Oct 06 21:13:08 2008 +0000
committer Evan Cheng <evan.cheng@apple.com> Mon Oct 06 21:13:08 2008 +0000
tree a12486c2bf1e82f14265930dc027a02fbdcbbe29
parent 65609f2efa17916f77083a10a9a5239ff2fa1899

Fix PR2850 and PR2863. Only generate movddup for 128-bit SSE vector shuffles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57210 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86ISelLowering.cpp

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 494ac1d..d74588e 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -3954,6 +3954,7 @@
 
   // Canonicalize movddup shuffles.
   if (V2IsUndef && Subtarget->hasSSE2() &&
+      VT.getSizeInBits() == 128 &&
       X86::isMOVDDUPMask(PermMask.getNode()))
     return CanonicalizeMovddup(Op, V1, PermMask, DAG, Subtarget->hasSSE3());