[x86] Bypass the shuffle mask comment generation when not using verbose
asm. This can be somewhat expensive and there is no reason to do it
outside of tests or debugging sessions. I'm also likely to make it
significantly more expensive to support more styles of shuffles.
llvm-svn: 218362
diff --git a/llvm/lib/Target/X86/X86MCInstLower.cpp b/llvm/lib/Target/X86/X86MCInstLower.cpp
index e6f0605..3c5c3c9 100644
--- a/llvm/lib/Target/X86/X86MCInstLower.cpp
+++ b/llvm/lib/Target/X86/X86MCInstLower.cpp
@@ -1121,6 +1121,8 @@
case X86::VPERMILPDrm:
case X86::VPERMILPSYrm:
case X86::VPERMILPDYrm: {
+ if (!OutStreamer.isVerboseAsm())
+ break;
// All of these instructions accept a constant pool operand as their fifth.
assert(MI->getNumOperands() > 5 &&
"We should always have at least 5 operands!");