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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-14 23:49:37 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-14 23:49:37 +0000 |
| commit | 1cf8b0f2a5435d8444b6cc7d4a27eef424398273 (patch) | |
| tree | ec43a66b47faf1681f13f136b947e44883968097 /lib/CodeGen/MachineInstr.cpp | |
| parent | 6b7913893bcd47f52eff71e39e50c42511c4ed36 (diff) | |
| download | llvm-1cf8b0f2a5435d8444b6cc7d4a27eef424398273.tar.gz llvm-1cf8b0f2a5435d8444b6cc7d4a27eef424398273.tar.bz2 llvm-1cf8b0f2a5435d8444b6cc7d4a27eef424398273.tar.xz | |
Handle regmasks in findRegisterDefOperandIdx().
Only accept register masks when looking for an 'overlapping' def. When
Overlap is not set, the function searches for a proper definition of
Reg.
This means MI->modifiesRegister() considers register masks, but
MI->definesRegister() doesn't.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150529 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineInstr.cpp')
| -rw-r--r-- | lib/CodeGen/MachineInstr.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index 0a657341ac..ff32a66b14 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -1045,6 +1045,10 @@ MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, bool Overlap, bool isPhys = TargetRegisterInfo::isPhysicalRegister(Reg); for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { const MachineOperand &MO = getOperand(i); + // Accept regmask operands when Overlap is set. + // Ignore them when looking for a specific def operand (Overlap == false). + if (isPhys && Overlap && MO.isRegMask() && MO.clobbersPhysReg(Reg)) + return i; if (!MO.isReg() || !MO.isDef()) continue; unsigned MOReg = MO.getReg(); |