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* No longer need to run die after instcombine

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* Run new correlated expressions pass
* Simplify the CFG (removing dead blocks, merging blocks, eliminating branches
  on constant booleans, etc) after correlated exprs pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3598 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-09-06 18:41:33 +00:00
parent 513d3e8fc5
commit 4dd7d3e34d
1 changed files with 5 additions and 3 deletions
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8
tools/gccas/gccas.cpp
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@@ -86,7 +86,9 @@ void AddConfiguredTransformationPasses(PassManager &PM) {
// Disabling until this is fixed -- Vikram, 7/7/02. // Disabling until this is fixed -- Vikram, 7/7/02.
// addPass(PM, createReassociatePass()); // Reassociate expressions // addPass(PM, createReassociatePass()); // Reassociate expressions
addPass(PM, createInstructionCombiningPass()); // Combine silly seq's addPass(PM, createInstructionCombiningPass()); // Combine silly seq's
addPass(PM, createDeadInstEliminationPass()); // Kill InstCombine remnants addPass(PM, createCorrelatedExpressionEliminationPass());
addPass(PM, createInstructionCombiningPass()); // Combine silly seq's
addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
addPass(PM, createLICMPass()); // Hoist loop invariants addPass(PM, createLICMPass()); // Hoist loop invariants
addPass(PM, createLoadValueNumberingPass()); // GVN for load instructions addPass(PM, createLoadValueNumberingPass()); // GVN for load instructions
addPass(PM, createGCSEPass()); // Remove common subexprs addPass(PM, createGCSEPass()); // Remove common subexprs
@@ -95,8 +97,8 @@ void AddConfiguredTransformationPasses(PassManager &PM) {
// Run instcombine after redundancy elimination to exploit opportunities // Run instcombine after redundancy elimination to exploit opportunities
// opened up by them. // opened up by them.
addPass(PM, createInstructionCombiningPass()); addPass(PM, createInstructionCombiningPass());
addPass(PM, createAggressiveDCEPass()); // SSA based 'Agressive DCE' addPass(PM, createAggressiveDCEPass()); // SSA based 'Agressive DCE'
addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
} }