ARMExpandPseudoInsts: Fix CMP_SWAP expansion adding a kill flag to a def
llvm-svn: 346026
diff --git a/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp
index b35a16b..eecd0a1 100644
--- a/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp
+++ b/llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp
@@ -1030,10 +1030,10 @@
if (IsThumb) {
unsigned RegLo = TRI->getSubReg(Reg.getReg(), ARM::gsub_0);
unsigned RegHi = TRI->getSubReg(Reg.getReg(), ARM::gsub_1);
- MIB.addReg(RegLo, Flags | getKillRegState(Reg.isDead()));
- MIB.addReg(RegHi, Flags | getKillRegState(Reg.isDead()));
+ MIB.addReg(RegLo, Flags);
+ MIB.addReg(RegHi, Flags);
} else
- MIB.addReg(Reg.getReg(), Flags | getKillRegState(Reg.isDead()));
+ MIB.addReg(Reg.getReg(), Flags);
}
/// Expand a 64-bit CMP_SWAP to an ldrexd/strexd loop.
@@ -1103,7 +1103,8 @@
// bne .Lloadcmp
unsigned STREXD = IsThumb ? ARM::t2STREXD : ARM::STREXD;
MIB = BuildMI(StoreBB, DL, TII->get(STREXD), TempReg);
- addExclusiveRegPair(MIB, New, 0, IsThumb, TRI);
+ unsigned Flags = getKillRegState(New.isDead());
+ addExclusiveRegPair(MIB, New, Flags, IsThumb, TRI);
MIB.addReg(AddrReg).add(predOps(ARMCC::AL));
unsigned CMPri = IsThumb ? ARM::t2CMPri : ARM::CMPri;