diff options
Diffstat (limited to 'lib/Target/AArch64')
| -rw-r--r-- | lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp b/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp index 5e477d39e074..a1c98251cec4 100644 --- a/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp +++ b/lib/Target/AArch64/AArch64ExpandPseudoInsts.cpp @@ -718,13 +718,21 @@ bool AArch64ExpandPseudo::expandCMP_SWAP_128( .addReg(DestLo.getReg(), getKillRegState(DestLo.isDead())) .addOperand(DesiredLo) .addImm(0); - BuildMI(LoadCmpBB, DL, TII->get(AArch64::SBCSXr), AArch64::XZR) + BuildMI(LoadCmpBB, DL, TII->get(AArch64::CSINCWr), StatusReg) + .addReg(AArch64::WZR) + .addReg(AArch64::WZR) + .addImm(AArch64CC::EQ); + BuildMI(LoadCmpBB, DL, TII->get(AArch64::SUBSXrs), AArch64::XZR) .addReg(DestHi.getReg(), getKillRegState(DestHi.isDead())) - .addOperand(DesiredHi); - BuildMI(LoadCmpBB, DL, TII->get(AArch64::Bcc)) - .addImm(AArch64CC::NE) - .addMBB(DoneBB) - .addReg(AArch64::NZCV, RegState::Implicit | RegState::Kill); + .addOperand(DesiredHi) + .addImm(0); + BuildMI(LoadCmpBB, DL, TII->get(AArch64::CSINCWr), StatusReg) + .addReg(StatusReg, RegState::Kill) + .addReg(StatusReg, RegState::Kill) + .addImm(AArch64CC::EQ); + BuildMI(LoadCmpBB, DL, TII->get(AArch64::CBNZW)) + .addReg(StatusReg, RegState::Kill) + .addMBB(DoneBB); LoadCmpBB->addSuccessor(DoneBB); LoadCmpBB->addSuccessor(StoreBB); |