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| author | Chris Lattner <sabre@nondot.org> | 2004-12-12 22:44:30 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-12-12 22:44:30 +0000 |
| commit | 9115eb302457038788e9bbe1280b2fe31227b747 (patch) | |
| tree | 0a095dd5b19130800c42a7f0c7eb9e0a3fa7c1b2 /llvm/lib/Transforms | |
| parent | d4298781c12979df061bcdd689d5222ef4c965e4 (diff) | |
| download | bcm5719-llvm-9115eb302457038788e9bbe1280b2fe31227b747.tar.gz bcm5719-llvm-9115eb302457038788e9bbe1280b2fe31227b747.zip | |
More minor microoptimizations
llvm-svn: 18841
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/ADCE.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/llvm/lib/Transforms/Scalar/ADCE.cpp b/llvm/lib/Transforms/Scalar/ADCE.cpp index fde1308aba2..43471341f4c 100644 --- a/llvm/lib/Transforms/Scalar/ADCE.cpp +++ b/llvm/lib/Transforms/Scalar/ADCE.cpp @@ -264,8 +264,6 @@ bool ADCE::doADCE() { for (pred_iterator PI = pred_begin(I), E = pred_end(I); PI != E; ++PI) markInstructionLive((*PI)->getTerminator()); - - DEBUG(std::cerr << "Processing work list\n"); // AliveBlocks - Set of basic blocks that we know have instructions that are @@ -291,12 +289,12 @@ bool ADCE::doADCE() { // makes the predecessors alive. // if (PHINode *PN = dyn_cast<PHINode>(I)) - for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE; ++PI) - if (AliveBlocks.insert(*PI).second) // Block is now ALIVE! - markBlockAlive(*PI); + for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) + if (AliveBlocks.insert(PN->getIncomingBlock(i)).second) + markBlockAlive(PN->getIncomingBlock(i)); // Block is newly ALIVE! // Loop over all of the operands of the live instruction, making sure that - // they are known to be alive as well... + // they are known to be alive as well. // for (unsigned op = 0, End = I->getNumOperands(); op != End; ++op) if (Instruction *Operand = dyn_cast<Instruction>(I->getOperand(op))) |
