Move loop optimization passes up, add loop unroller
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13030 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/gccas/gccas.cpp b/tools/gccas/gccas.cpp
index dd2b307..40e85ce 100644
--- a/tools/gccas/gccas.cpp
+++ b/tools/gccas/gccas.cpp
@@ -92,14 +92,18 @@
addPass(PM, createTailCallEliminationPass()); // Eliminate tail calls
addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
addPass(PM, createLICMPass()); // Hoist loop invariants
+ addPass(PM, createInstructionCombiningPass()); // Clean up after the unroller
+ addPass(PM, createIndVarSimplifyPass()); // Canonicalize indvars
+ addPass(PM, createLoopUnrollPass()); // Unroll small loops
+ addPass(PM, createInstructionCombiningPass()); // Clean up after the unroller
addPass(PM, createLoadValueNumberingPass()); // GVN for load instructions
addPass(PM, createGCSEPass()); // Remove common subexprs
addPass(PM, createSCCPPass()); // Constant prop with SCCP
+ addPass(PM, createSCCPPass()); // Constant prop with SCCP
// Run instcombine after redundancy elimination to exploit opportunities
// opened up by them.
addPass(PM, createInstructionCombiningPass());
- addPass(PM, createIndVarSimplifyPass()); // Canonicalize indvars
addPass(PM, createAggressiveDCEPass()); // SSA based 'Aggressive DCE'
addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
addPass(PM, createDeadTypeEliminationPass()); // Eliminate dead types