diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/InstrEmitter.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp index 578b51d9f8..936c1269a8 100644 --- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp +++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp @@ -479,7 +479,8 @@ void InstrEmitter::EmitSubregNode(SDNode *Node, unsigned SrcReg, DstReg, DefSubIdx; if (DefMI && TII->isCoalescableExtInstr(*DefMI, SrcReg, DstReg, DefSubIdx) && - SubIdx == DefSubIdx) { + SubIdx == DefSubIdx && + TRC == MRI->getRegClass(SrcReg)) { // Optimize these: // r1025 = s/zext r1024, 4 // r1026 = extract_subreg r1025, 4 |