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[ScopDetection] Add stat for total number of loops.

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The total number of loops is useful as a baseline comparing how many
loops have been optimized in different configurations.

llvm-svn: 311469
This commit is contained in:
Michael Kruse 2017-08-22 17:09:51 +00:00
parent 9cbbacb910
commit 5b228bbb12
2 changed files with 15 additions and 0 deletions
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14
polly/lib/Analysis/ScopDetection.cpp
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@ -212,6 +212,8 @@ StringRef polly::PollySkipFnAttr = "polly.skip.fn";
//===----------------------------------------------------------------------===//
// Statistics.
STATISTIC(NumTotalLoops, "Number of loops (in- or out of scops, in any "
"function processed by Polly)");
STATISTIC(NumScopRegions, "Number of scops");
STATISTIC(NumLoopsInScop, "Number of loops in scops");
STATISTIC(NumScopsDepthOne, "Number of scops with maximal loop depth 1");
@ -303,6 +305,17 @@ static bool doesStringMatchAnyRegex(StringRef Str,
//===----------------------------------------------------------------------===//
// ScopDetection.
static void countTotalLoops(Loop *L) {
NumTotalLoops++;
for (Loop *SubLoop : L->getSubLoops())
countTotalLoops(SubLoop);
}
static void countTotalLoops(LoopInfo &LI) {
for (Loop *L : LI)
countTotalLoops(L);
}
ScopDetection::ScopDetection(Function &F, const DominatorTree &DT,
ScalarEvolution &SE, LoopInfo &LI, RegionInfo &RI,
AliasAnalysis &AA, OptimizationRemarkEmitter &ORE)
@ -325,6 +338,7 @@ ScopDetection::ScopDetection(Function &F, const DominatorTree &DT,
findScops(*TopRegion);
countTotalLoops(LI);
NumScopRegions += ValidRegions.size();
// Prune non-profitable regions.

1
polly/test/ScopDetect/statistics.ll
View File

@ -2,6 +2,7 @@
; REQUIRES: asserts
; CHECK-DAG: 10 polly-detect - Number of loops (in- or out of scops, in any function processed by Polly)
; CHECK-DAG: 4 polly-detect - Maximal number of loops in scops (profitable scops only)
; CHECK-DAG: 4 polly-detect - Maximal number of loops in scops
; CHECK-DAG: 10 polly-detect - Number of loops in scops (profitable scops only)