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-rw-r--r--tools/opt/opt.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 301a059..e3ea59e 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -280,6 +280,8 @@ void AddStandardCompilePasses(PassManager &PM) {
addPass(PM, createLICMPass()); // Hoist loop invariants
addPass(PM, createLoopUnswitchPass()); // Unswitch loops.
addPass(PM, createLoopIndexSplitPass()); // Index split loops.
+ // 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