[LoopAccesses] Split out LoopAccessReport from VectorizerReport
The only difference between these two is that VectorizerReport adds a
vectorizer-specific prefix to its messages. When LAA is used in the
vectorizer context the prefix is added when we promote the
LoopAccessReport into a VectorizerReport via one of the constructors.
This is part of the patchset that converts LoopAccessAnalysis into an
actual analysis pass.
llvm-svn: 229897
diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 8588e61..3e86caf 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -50,10 +50,10 @@
return ::VectorizationInterleave.getNumOccurrences() > 0;
}
-void VectorizationReport::emitAnalysis(const VectorizationReport &Message,
- const Function *TheFunction,
- const Loop *TheLoop,
- const char *PassName) {
+void LoopAccessReport::emitAnalysis(const LoopAccessReport &Message,
+ const Function *TheFunction,
+ const Loop *TheLoop,
+ const char *PassName) {
DebugLoc DL = TheLoop->getStartLoc();
if (const Instruction *I = Message.getInstr())
DL = I->getDebugLoc();
@@ -858,14 +858,14 @@
bool LoopAccessInfo::canAnalyzeLoop() {
// We can only analyze innermost loops.
if (!TheLoop->empty()) {
- emitAnalysis(VectorizationReport() << "loop is not the innermost loop");
+ emitAnalysis(LoopAccessReport() << "loop is not the innermost loop");
return false;
}
// We must have a single backedge.
if (TheLoop->getNumBackEdges() != 1) {
emitAnalysis(
- VectorizationReport() <<
+ LoopAccessReport() <<
"loop control flow is not understood by analyzer");
return false;
}
@@ -873,7 +873,7 @@
// We must have a single exiting block.
if (!TheLoop->getExitingBlock()) {
emitAnalysis(
- VectorizationReport() <<
+ LoopAccessReport() <<
"loop control flow is not understood by analyzer");
return false;
}
@@ -883,7 +883,7 @@
// instructions in the loop are executed the same number of times.
if (TheLoop->getExitingBlock() != TheLoop->getLoopLatch()) {
emitAnalysis(
- VectorizationReport() <<
+ LoopAccessReport() <<
"loop control flow is not understood by analyzer");
return false;
}
@@ -895,7 +895,7 @@
// ScalarEvolution needs to be able to find the exit count.
const SCEV *ExitCount = SE->getBackedgeTakenCount(TheLoop);
if (ExitCount == SE->getCouldNotCompute()) {
- emitAnalysis(VectorizationReport() <<
+ emitAnalysis(LoopAccessReport() <<
"could not determine number of loop iterations");
DEBUG(dbgs() << "LAA: SCEV could not compute the loop exit count.\n");
return false;
@@ -944,7 +944,7 @@
LoadInst *Ld = dyn_cast<LoadInst>(it);
if (!Ld || (!Ld->isSimple() && !IsAnnotatedParallel)) {
- emitAnalysis(VectorizationReport(Ld)
+ emitAnalysis(LoopAccessReport(Ld)
<< "read with atomic ordering or volatile read");
DEBUG(dbgs() << "LAA: Found a non-simple load.\n");
CanVecMem = false;
@@ -960,13 +960,13 @@
if (it->mayWriteToMemory()) {
StoreInst *St = dyn_cast<StoreInst>(it);
if (!St) {
- emitAnalysis(VectorizationReport(it) <<
+ emitAnalysis(LoopAccessReport(it) <<
"instruction cannot be vectorized");
CanVecMem = false;
return;
}
if (!St->isSimple() && !IsAnnotatedParallel) {
- emitAnalysis(VectorizationReport(St)
+ emitAnalysis(LoopAccessReport(St)
<< "write with atomic ordering or volatile write");
DEBUG(dbgs() << "LAA: Found a non-simple store.\n");
CanVecMem = false;
@@ -1007,7 +1007,7 @@
if (isUniform(Ptr)) {
emitAnalysis(
- VectorizationReport(ST)
+ LoopAccessReport(ST)
<< "write to a loop invariant address could not be vectorized");
DEBUG(dbgs() << "LAA: We don't allow storing to uniform addresses\n");
CanVecMem = false;
@@ -1108,7 +1108,7 @@
}
if (NeedRTCheck && !CanDoRT) {
- emitAnalysis(VectorizationReport() << "cannot identify array bounds");
+ emitAnalysis(LoopAccessReport() << "cannot identify array bounds");
DEBUG(dbgs() << "LAA: We can't vectorize because we can't find " <<
"the array bounds.\n");
PtrRtCheck.reset();
@@ -1142,10 +1142,10 @@
if (!CanDoRT ||
NumComparisons > VectorizerParams::RuntimeMemoryCheckThreshold) {
if (!CanDoRT && NumComparisons > 0)
- emitAnalysis(VectorizationReport()
+ emitAnalysis(LoopAccessReport()
<< "cannot check memory dependencies at runtime");
else
- emitAnalysis(VectorizationReport()
+ emitAnalysis(LoopAccessReport()
<< NumComparisons << " exceeds limit of "
<< VectorizerParams::RuntimeMemoryCheckThreshold
<< " dependent memory operations checked at runtime");
@@ -1160,7 +1160,7 @@
}
if (!CanVecMem)
- emitAnalysis(VectorizationReport() <<
+ emitAnalysis(LoopAccessReport() <<
"unsafe dependent memory operations in loop");
DEBUG(dbgs() << "LAA: We" << (NeedRTCheck ? "" : " don't") <<
@@ -1176,7 +1176,7 @@
return !DT->dominates(BB, Latch);
}
-void LoopAccessInfo::emitAnalysis(VectorizationReport &Message) {
+void LoopAccessInfo::emitAnalysis(LoopAccessReport &Message) {
assert(!Report && "Multiple reports generated");
Report = Message;
}