The new CFrontend generates LOTs of basic blocks that just fall through and do
other funky stuff. Clean it up early.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5889 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/gccas/gccas.cpp b/tools/gccas/gccas.cpp
index b5a980b..2172782 100644
--- a/tools/gccas/gccas.cpp
+++ b/tools/gccas/gccas.cpp
@@ -70,6 +70,7 @@
addPass(PM, createDeadTypeEliminationPass()); // Eliminate dead types
addPass(PM, createConstantMergePass()); // Merge dup global constants
addPass(PM, createVerifierPass()); // Verify that input is correct
+ addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
addPass(PM, createDeadInstEliminationPass()); // Remove Dead code/vars
addPass(PM, createRaiseAllocationsPass()); // call %malloc -> malloc inst
addPass(PM, createIndVarSimplifyPass()); // Simplify indvars