diff options
author | Devang Patel <dpatel@apple.com> | 2007-02-23 00:10:16 +0000 |
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committer | Devang Patel <dpatel@apple.com> | 2007-02-23 00:10:16 +0000 |
commit | 5afdc7d78526622034932e6d07871c7b25d87361 (patch) | |
tree | bcb51d72ecc7c56e957c36623c76d6fe8bef1c45 /lib/Analysis/LoopPass.cpp | |
parent | 7d35c0e2b987a631019feb746ea577346abb1fee (diff) |
Add LPPassManager interface that LoopPass can use to skip
rest of the passes in the queue for a loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34508 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/LoopPass.cpp')
-rw-r--r-- | lib/Analysis/LoopPass.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp index 95a18e5b00..22d542b05b 100644 --- a/lib/Analysis/LoopPass.cpp +++ b/lib/Analysis/LoopPass.cpp @@ -57,6 +57,13 @@ LPPassManager::~LPPassManager() { delete LQ; } +/// Delete loop from the loop queue. This is used by Loop pass to inform +/// Loop Pass Manager that it should skip rest of the passes for this loop. +void LPPassManager::deleteLoopFromQueue(Loop *L) { + // Do not pop loop from LQ here. It will be done by runOnFunction while loop. + skipThisLoop = true; +} + // Recurse through all subloops and all loops into LQ. static void addLoopIntoQueue(Loop *L, LoopQueue *LQ) { for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I) @@ -81,6 +88,8 @@ bool LPPassManager::runOnFunction(Function &F) { while (!LQ->empty()) { Loop *L = LQ->top(); + skipThisLoop = false; + // Run all passes on current SCC for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -107,6 +116,10 @@ bool LPPassManager::runOnFunction(Function &F) { removeNotPreservedAnalysis(P); recordAvailableAnalysis(P); removeDeadPasses(P, Msg2); + + if (skipThisLoop) + // Do not run other passes on this loop. + break; } // Pop the loop from queue after running all passes. |