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[SROA] Switch to using a more direct debug logging technique in one part 

of my new load and store splitting, and fix a bug where it logged
a totally irrelevant slice rather than the actual slice in question.

The logging here previously worked because we used to place new slices
onto the back of the core sequence, but that caused other problems.
I updated the actual code to store new slices in their own vector but
didn't update the logging. There isn't a good way to reuse the logging
any more, and frankly it wasn't needed. We can directly log this bit
more easily.

llvm-svn: 225063
This commit is contained in:
Chandler Carruth 2015-01-01 12:56:47 +00:00
parent 994cde8869
commit 6044c0bc78
1 changed files with 6 additions and 4 deletions
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10
llvm/lib/Transforms/Scalar/SROA.cpp
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@ -3702,8 +3702,9 @@ bool SROA::presplitLoadsAndStores(AllocaInst &AI, AllocaSlices &AS) {
Slice(BaseOffset + PartOffset, BaseOffset + PartOffset + PartSize,
&PLoad->getOperandUse(PLoad->getPointerOperandIndex()),
/*IsSplittable*/ true));
DEBUG(AS.printSlice(dbgs(), std::prev(AS.end()), " "));
DEBUG(dbgs() << ": " << *PLoad << "\n");
DEBUG(dbgs() << " new slice [" << NewSlices.back().beginOffset()
<< ", " << NewSlices.back().endOffset() << "): " << *PLoad
<< "\n");
// Setup the next partition.
PartOffset = Offsets.Splits[Idx];
@ -3837,8 +3838,9 @@ bool SROA::presplitLoadsAndStores(AllocaInst &AI, AllocaSlices &AS) {
Slice(BaseOffset + PartOffset, BaseOffset + PartOffset + PartSize,
&PStore->getOperandUse(PStore->getPointerOperandIndex()),
/*IsSplittable*/ true));
DEBUG(AS.printSlice(dbgs(), std::prev(AS.end()), " "));
DEBUG(dbgs() << ": " << *PStore << "\n");
DEBUG(dbgs() << " new slice [" << NewSlices.back().beginOffset()
<< ", " << NewSlices.back().endOffset() << "): " << *PStore
<< "\n");
if (!SplitLoads) {
DEBUG(dbgs() << " of split load: " << *PLoad << "\n");
}