diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2009-07-16 09:20:10 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-07-16 09:20:10 +0000 |
| commit | 378445303b10b092a898a75131141a8259cff50b (patch) | |
| tree | 14871472de34bcaf547ab312fbcbf18206e73079 /lib/CodeGen/TwoAddressInstructionPass.cpp | |
| parent | 6ef40b11f8331b80d72e7e5f2670d8e0eb190bb2 (diff) | |
Let callers decide the sub-register index on the def operand of rematerialized instructions.
Avoid remat'ing instructions whose def have sub-register indices for now. It's just really really hard to get all the cases right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75900 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
| -rw-r--r-- | lib/CodeGen/TwoAddressInstructionPass.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index b67f84b0f9..83468d9273 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -798,6 +798,7 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { // a = a op c unsigned regA = mi->getOperand(ti).getReg(); unsigned regB = mi->getOperand(si).getReg(); + unsigned regASubIdx = mi->getOperand(ti).getSubReg(); assert(TargetRegisterInfo::isVirtualRegister(regB) && "cannot update physical register live information"); @@ -946,7 +947,7 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { DefMI->isSafeToReMat(TII, regB) && isProfitableToReMat(regB, rc, mi, DefMI, mbbi, Dist)){ DEBUG(cerr << "2addr: REMATTING : " << *DefMI << "\n"); - TII->reMaterialize(*mbbi, mi, regA, DefMI); + TII->reMaterialize(*mbbi, mi, regA, regASubIdx, DefMI); ReMatRegs.set(regB); ++NumReMats; } else { |