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Use a continue to simplify loop and reduce indentation. No functional change.

llvm-svn: 174198
This commit is contained in:
Chad Rosier 2013-02-01 17:49:07 +00:00
parent 5e4467cefa
commit 99c22c1ea6

View File

@ -752,32 +752,33 @@ void PEI::replaceFrameIndices(MachineFunction &Fn) {
MachineInstr *MI = I; MachineInstr *MI = I;
bool DoIncr = true; bool DoIncr = true;
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
if (MI->getOperand(i).isFI()) { if (!MI->getOperand(i).isFI())
// Some instructions (e.g. inline asm instructions) can have continue;
// multiple frame indices and/or cause eliminateFrameIndex
// to insert more than one instruction. We need the register
// scavenger to go through all of these instructions so that
// it can update its register information. We keep the
// iterator at the point before insertion so that we can
// revisit them in full.
bool AtBeginning = (I == BB->begin());
if (!AtBeginning) --I;
// If this instruction has a FrameIndex operand, we need to // Some instructions (e.g. inline asm instructions) can have
// use that target machine register info object to eliminate // multiple frame indices and/or cause eliminateFrameIndex
// it. // to insert more than one instruction. We need the register
TRI.eliminateFrameIndex(MI, SPAdj, i, // scavenger to go through all of these instructions so that
FrameIndexVirtualScavenging ? NULL : RS); // it can update its register information. We keep the
// iterator at the point before insertion so that we can
// revisit them in full.
bool AtBeginning = (I == BB->begin());
if (!AtBeginning) --I;
// Reset the iterator if we were at the beginning of the BB. // If this instruction has a FrameIndex operand, we need to
if (AtBeginning) { // use that target machine register info object to eliminate
I = BB->begin(); // it.
DoIncr = false; TRI.eliminateFrameIndex(MI, SPAdj, i,
} FrameIndexVirtualScavenging ? NULL : RS);
MI = 0; // Reset the iterator if we were at the beginning of the BB.
break; if (AtBeginning) {
I = BB->begin();
DoIncr = false;
} }
MI = 0;
break;
} }
if (DoIncr && I != BB->end()) ++I; if (DoIncr && I != BB->end()) ++I;