diff options
Diffstat (limited to 'lib/Target/X86/X86ISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelDAGToDAG.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index b76d3e23cf..2bd875e92e 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -1515,6 +1515,8 @@ SDNode *X86DAGToDAGISel::Select(SDValue N) { SDValue N0 = Node->getOperand(0); // Get the subregsiter index for the type to extend. MVT N0VT = N0.getValueType(); + // FIXME: In x86-32, 8-bit value may be in AH, etc. which don't have + // super-registers. unsigned Idx = (N0VT == MVT::i32) ? X86::SUBREG_32BIT : (N0VT == MVT::i16) ? X86::SUBREG_16BIT : (Subtarget->is64Bit()) ? X86::SUBREG_8BIT : 0; |