diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-17 19:07:56 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-17 19:07:56 +0000 |
| commit | d9f0ff56a1878347fe5a0f162ef8c2ef2b63aeb5 (patch) | |
| tree | 75dda73c9862f8c73eb74083958cc2e11be718f3 /lib/CodeGen/VirtRegMap.cpp | |
| parent | dbe266be35cfee0fbda5523ac578fef81e8fdfcc (diff) | |
Transfer regmasks to MRI.
MRI keeps track of which physregs have been used. Make sure it gets
updated with all the regmask-clobbered registers.
Delete the closePhysRegsUsed() function which isn't necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150830 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/VirtRegMap.cpp')
| -rw-r--r-- | lib/CodeGen/VirtRegMap.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp index 5daa6a7dc1..3bab93bdc0 100644 --- a/lib/CodeGen/VirtRegMap.cpp +++ b/lib/CodeGen/VirtRegMap.cpp @@ -127,6 +127,11 @@ void VirtRegMap::rewrite(SlotIndexes *Indexes) { for (MachineInstr::mop_iterator MOI = MI->operands_begin(), MOE = MI->operands_end(); MOI != MOE; ++MOI) { MachineOperand &MO = *MOI; + + // Make sure MRI knows about registers clobbered by regmasks. + if (MO.isRegMask()) + MRI->addPhysRegsUsedFromRegMask(MO.getRegMask()); + if (!MO.isReg() || !TargetRegisterInfo::isVirtualRegister(MO.getReg())) continue; unsigned VirtReg = MO.getReg(); |