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author | Devang Patel <dpatel@apple.com> | 2007-06-29 23:13:42 +0000 |
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committer | Devang Patel <dpatel@apple.com> | 2007-06-29 23:13:42 +0000 |
commit | 88197332e7adff0ce90c38e67c989389a8d36ad7 (patch) | |
tree | 87845ace817f5e4a21e5c087c485c875c1fa9461 /llvm/lib/Analysis/LoopPass.cpp | |
parent | eaa836bbf5f9424dca28ce53960f368a83d238a1 (diff) | |
download | bcm5719-llvm-88197332e7adff0ce90c38e67c989389a8d36ad7.tar.gz bcm5719-llvm-88197332e7adff0ce90c38e67c989389a8d36ad7.zip |
Add loop info verification mechanism.
llvm-svn: 37822
Diffstat (limited to 'llvm/lib/Analysis/LoopPass.cpp')
-rw-r--r-- | llvm/lib/Analysis/LoopPass.cpp | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/LoopPass.cpp b/llvm/lib/Analysis/LoopPass.cpp index ab64c3cf921..a5496a01f0a 100644 --- a/llvm/lib/Analysis/LoopPass.cpp +++ b/llvm/lib/Analysis/LoopPass.cpp @@ -157,6 +157,18 @@ void LPPassManager::getAnalysisUsage(AnalysisUsage &Info) const { Info.setPreservesAll(); } +/// verifyLoopInfo - Verify loop nest. +void LPPassManager::verifyLoopInfo() { + assert (LI && "Loop Info is missing"); + + for (LoopInfo::iterator I = LI->begin(), E = LI->end(); I != E; ++I) { + Loop *L = *I; + assert (L->getHeader() && "Loop header is missing"); + assert (L->getLoopPreheader() && "Loop preheader is missing"); + assert (L->getLoopLatch() && "Loop latch is missing"); + } +} + /// run - Execute all of the passes scheduled for execution. Keep track of /// whether any of the passes modifies the function, and if so, return true. bool LPPassManager::runOnFunction(Function &F) { @@ -202,6 +214,7 @@ bool LPPassManager::runOnFunction(Function &F) { LoopPass *LP = dynamic_cast<LoopPass *>(P); assert (LP && "Invalid LPPassManager member"); LP->runOnLoop(CurrentLoop, *this); + verifyLoopInfo(); StopPassTimer(P); if (Changed) @@ -302,4 +315,3 @@ void LoopPass::assignPassManager(PMStack &PMS, LPPM->add(this); } - |