Move licm after reassociate, add some cond-propagate passes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21769 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/gccas/gccas.cpp b/tools/gccas/gccas.cpp
index fae4ddb205acda1514ed894897d4eb638e5a4c45..2791cf4df20b631380c64c491fc5bea4668bf947 100644 (file)
--- a/tools/gccas/gccas.cpp
+++ b/tools/gccas/gccas.cpp
@@ -103,11 +103,12 @@ void AddConfiguredTransformationPasses(PassManager &PM) {
   addPass(PM, createCFGSimplificationPass());    // Merge & remove BBs
   addPass(PM, createScalarReplAggregatesPass()); // Break up aggregate allocas
   addPass(PM, createInstructionCombiningPass()); // Combine silly seq's
+  addPass(PM, createCondPropagationPass());      // Propagate conditionals
 
   addPass(PM, createTailCallEliminationPass());  // Eliminate tail calls
   addPass(PM, createCFGSimplificationPass());    // Merge & remove BBs
-  addPass(PM, createLICMPass());                 // Hoist loop invariants
   addPass(PM, createReassociatePass());          // Reassociate expressions
+  addPass(PM, createLICMPass());                 // Hoist loop invariants
   addPass(PM, createInstructionCombiningPass()); // Clean up after LICM/reassoc
   addPass(PM, createIndVarSimplifyPass());       // Canonicalize indvars
   addPass(PM, createLoopUnrollPass());           // Unroll small loops
@@ -119,6 +120,8 @@ void AddConfiguredTransformationPasses(PassManager &PM) {
   // Run instcombine after redundancy elimination to exploit opportunities
   // opened up by them.
   addPass(PM, createInstructionCombiningPass());
+  addPass(PM, createCondPropagationPass());      // Propagate conditionals
+
   addPass(PM, createDeadStoreEliminationPass()); // Delete dead stores
   addPass(PM, createAggressiveDCEPass());        // SSA based 'Aggressive DCE'
   addPass(PM, createCFGSimplificationPass());    // Merge & remove BBs