X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Fopt%2Fopt.cpp;h=19dcb2b782c63f81aac03678a70e2a5918180954;hb=629c1a3f78494d0dd769fe82bd2bd17df0555843;hp=4b7dbf510667b0386a26ab09c16c15af529ae47e;hpb=2510c3b70f5315533ea31f286b50bd978352e85e;p=oota-llvm.git

diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 4b7dbf51066..19dcb2b782c 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -262,10 +262,10 @@ void AddStandardCompilePasses(PassManager &PM) {
 
   if (!DisableInline)
     addPass(PM, createFunctionInliningPass());   // Inline small functions
-  addPass(PM, createSimplifyLibCallsPass());     // Library Call Optimizations
   addPass(PM, createArgumentPromotionPass());    // Scalarize uninlined fn args
 
   addPass(PM, createTailDuplicationPass());      // Simplify cfg by copying code
+  addPass(PM, createSimplifyLibCallsPass());     // Library Call Optimizations
   addPass(PM, createInstructionCombiningPass()); // Cleanup for scalarrepl.
   addPass(PM, createJumpThreadingPass());        // Thread jumps.
   addPass(PM, createCFGSimplificationPass());    // Merge & remove BBs
@@ -280,8 +280,10 @@ void AddStandardCompilePasses(PassManager &PM) {
   addPass(PM, createLICMPass());                 // Hoist loop invariants
   addPass(PM, createLoopUnswitchPass());         // Unswitch loops.
   addPass(PM, createLoopIndexSplitPass());       // Index split loops.
-  addPass(PM, createInstructionCombiningPass()); // Clean up after LICM/reassoc
+  // FIXME : Removing instcombine causes nestedloop regression.
+  addPass(PM, createInstructionCombiningPass()); 
   addPass(PM, createIndVarSimplifyPass());       // Canonicalize indvars
+  addPass(PM, createLoopDeletionPass());         // Delete dead loops
   addPass(PM, createLoopUnrollPass());           // Unroll small loops
   addPass(PM, createInstructionCombiningPass()); // Clean up after the unroller
   addPass(PM, createGVNPass());                  // Remove redundancies
@@ -294,7 +296,7 @@ void AddStandardCompilePasses(PassManager &PM) {
   addPass(PM, createCondPropagationPass());      // Propagate conditionals
 
   addPass(PM, createDeadStoreEliminationPass()); // Delete dead stores
-  addPass(PM, createAggressiveDCEPass());        // SSA based 'Aggressive DCE'
+  addPass(PM, createAggressiveDCEPass());        // Delete dead instructions
   addPass(PM, createCFGSimplificationPass());    // Merge & remove BBs
   addPass(PM, createStripDeadPrototypesPass());  // Get rid of dead prototypes
   addPass(PM, createDeadTypeEliminationPass());  // Eliminate dead types