diff options
| author | Bob Wilson <bob.wilson@apple.com> | 2010-03-13 00:43:32 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-03-13 00:43:32 +0000 |
| commit | 3943ac38c946aaac21dbe686978d098770d7679e (patch) | |
| tree | fd935267435b75dd98712b1e20e8da80e0c7b887 /lib/Target/ARM/ARMLoadStoreOptimizer.cpp | |
| parent | cbd056074cfcd79265ee1e04e83f347355e9ad61 (diff) | |
Combine the code to build VLDM and VSTM instructions, since they are
mostly the same.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98402 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMLoadStoreOptimizer.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp index 24d2aa256b..808999c3b3 100644 --- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp +++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp @@ -697,15 +697,19 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoadStore(MachineBasicBlock &MBB, Offset = ARM_AM::getAM2Opc(AddSub, Bytes, ARM_AM::no_shift); else Offset = AddSub == ARM_AM::sub ? -Bytes : Bytes; - if (isLd) { - if (isAM5) - // VLDMS, VLDMD - BuildMI(MBB, MBBI, dl, TII->get(NewOpc)) - .addReg(Base, getKillRegState(BaseKill)) - .addImm(Offset).addImm(Pred).addReg(PredReg) - .addReg(Base, getDefRegState(true)) // WB base register - .addReg(MI->getOperand(0).getReg(), RegState::Define); - else if (isAM2) + + if (isAM5) { + // VLDM[SD}, VSTM[SD] + MachineOperand &MO = MI->getOperand(0); + BuildMI(MBB, MBBI, dl, TII->get(NewOpc)) + .addReg(Base, getKillRegState(isLd ? BaseKill : false)) + .addImm(Offset) + .addImm(Pred).addReg(PredReg) + .addReg(Base, getDefRegState(true)) // WB base register + .addReg(MO.getReg(), (isLd ? getDefRegState(true) : + getKillRegState(MO.isKill()))); + } else if (isLd) { + if (isAM2) // LDR_PRE, LDR_POST, BuildMI(MBB, MBBI, dl, TII->get(NewOpc), MI->getOperand(0).getReg()) .addReg(Base, RegState::Define) @@ -717,13 +721,7 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoadStore(MachineBasicBlock &MBB, .addReg(Base).addImm(Offset).addImm(Pred).addReg(PredReg); } else { MachineOperand &MO = MI->getOperand(0); - if (isAM5) - // VSTMS, VSTMD - BuildMI(MBB, MBBI, dl, TII->get(NewOpc)).addReg(Base).addImm(Offset) - .addImm(Pred).addReg(PredReg) - .addReg(Base, getDefRegState(true)) // WB base register - .addReg(MO.getReg(), getKillRegState(MO.isKill())); - else if (isAM2) + if (isAM2) // STR_PRE, STR_POST BuildMI(MBB, MBBI, dl, TII->get(NewOpc), Base) .addReg(MO.getReg(), getKillRegState(MO.isKill())) |