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-rw-r--r--lib/CodeGen/RegisterCoalescer.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index 07ae8a2..e2488ad 100644
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -769,7 +769,7 @@ bool RegisterCoalescer::reMaterializeTrivialDef(CoalescerPair &CP,
// extract_subreg, insert_subreg, subreg_to_reg coalescing.
const TargetRegisterClass *RC = TII->getRegClass(MCID, 0, TRI, *MF);
if (TargetRegisterInfo::isVirtualRegister(DstReg)) {
- if (MRI->getRegClass(DstReg) != RC)
+ if (!MRI->constrainRegClass(DstReg, RC))
return false;
} else if (!RC->contains(DstReg))
return false;