Check a comparion's operand type for legality before

expanding its operands.

llvm-svn: 55820

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp
index 1314f636826..6f6b9908da1 100644
--- a/llvm/lib/Target/X86/X86FastISel.cpp
+++ b/llvm/lib/Target/X86/X86FastISel.cpp
@@ -262,15 +262,15 @@ bool X86FastISel::X86SelectLoad(Instruction *I)  {
 bool X86FastISel::X86SelectCmp(Instruction *I) {
   CmpInst *CI = cast<CmpInst>(I);
 
+  MVT VT = TLI.getValueType(I->getOperand(0)->getType());
+  if (!TLI.isTypeLegal(VT))
+    return false;
+
   unsigned Op0Reg = getRegForValue(CI->getOperand(0));
   if (Op0Reg == 0) return false;
   unsigned Op1Reg = getRegForValue(CI->getOperand(1));
   if (Op1Reg == 0) return false;
 
-  MVT VT = TLI.getValueType(I->getOperand(0)->getType());
-  if (!TLI.isTypeLegal(VT))
-    return false;
-
   unsigned Opc;
   switch (VT.getSimpleVT()) {
   case MVT::i8: Opc = X86::CMP8rr; break;