Speculatively disable x86 portion of r120501 to appease the x86_64 buildbot.

llvm-svn: 120549

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -1339,6 +1339,8 @@ X86TargetLowering::LowerReturn(SDValue Chain,
 }
 
 bool X86TargetLowering::isUsedByReturnOnly(SDNode *N) const {
+  // Temporarily disabled.
+  return false;
   if (N->getNumValues() != 1)
     return false;
   if (!N->hasNUsesOfValue(1, 0))

llvm/test/CodeGen/X86/sibcall-5.ll

@@ -1,4 +1,5 @@
 ; RUN: llc < %s -march=x86-64 | FileCheck %s
+; XFAIL: *
 
 ; Sibcall optimization of expanded libcalls.
 ; rdar://8707777