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Simplify eliminateFrameIndex() interface back down now that PEI doesn't need

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to try to re-use scavenged frame index reference registers. rdar://8277890

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112241 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2010-08-26 23:32:16 +00:00
parent 6cd467bd0e
commit fcb4a8ead3
32 changed files with 76 additions and 155 deletions
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11
lib/CodeGen/PrologEpilogInserter.cpp
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@ -63,7 +63,6 @@ bool PEI::runOnMachineFunction(MachineFunction &Fn) {
const TargetRegisterInfo *TRI = Fn.getTarget().getRegisterInfo();
RS = TRI->requiresRegisterScavenging(Fn) ? new RegScavenger() : NULL;
FrameIndexVirtualScavenging = TRI->requiresFrameIndexScavenging(Fn);
FrameConstantRegMap.clear();
// Calculate the MaxCallFrameSize and AdjustsStack variables for the
// function's frame information. Also eliminates call frame pseudo
@ -756,16 +755,8 @@ void PEI::replaceFrameIndices(MachineFunction &Fn) {
// If this instruction has a FrameIndex operand, we need to
// use that target machine register info object to eliminate
// it.
TargetRegisterInfo::FrameIndexValue Value;
unsigned VReg =
TRI.eliminateFrameIndex(MI, SPAdj, &Value,
TRI.eliminateFrameIndex(MI, SPAdj,
FrameIndexVirtualScavenging ? NULL : RS);
if (VReg) {
assert (FrameIndexVirtualScavenging &&
"Not scavenging, but virtual returned from "
"eliminateFrameIndex()!");
FrameConstantRegMap[VReg] = FrameConstantEntry(Value, SPAdj);
}
// Reset the iterator if we were at the beginning of the BB.
if (AtBeginning) {