commit f5cd8c51e3d09a2af32e03414e75d3b50f47d0aa
author Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Fri Jul 02 22:06:54 2010 +0000
committer Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Fri Jul 02 22:06:54 2010 +0000
tree db1b94466c8360171aad59a567cff8930cf5f625
parent 65766ce7df779ac0e7f6ee0171562b56769ae1dd

- Add support for the rest of AVX SSE3 instructions
- Fix VEX prefix to be emitted with 3 bytes whenever VEX_5M
represents a REX equivalent two byte leading opcode



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107523 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86MCCodeEmitter.cpp

diff --git a/lib/Target/X86/X86MCCodeEmitter.cpp b/lib/Target/X86/X86MCCodeEmitter.cpp
index 9f36aaa..f60e739 100644
--- a/lib/Target/X86/X86MCCodeEmitter.cpp
+++ b/lib/Target/X86/X86MCCodeEmitter.cpp
@@ -543,7 +543,7 @@
   //
   unsigned char LastByte = VEX_PP | (VEX_L << 2) | (VEX_4V << 3);
 
-  if (VEX_B && VEX_X && !VEX_W) { // 2 byte VEX prefix
+  if (VEX_B && VEX_X && !VEX_W && (VEX_5M == 1)) { // 2 byte VEX prefix
     EmitByte(0xC5, CurByte, OS);
     EmitByte(LastByte | (VEX_R << 7), CurByte, OS);
     return;