From: Pan Xiuli <xiuli....@intel.com>
We found that in some loops there will be constant bool values that do
not change with loop, and LLVM can unswitch these bool value out of the
loop for less compare.
V2: Fix a typo
Signed-off-by: Pan Xiuli <xiuli....@intel.com>
---
backend/src/llvm/llvm_to_gen.cpp | 1 +
1 file changed, 1 insertion(+)
diff --git a/backend/src/llvm/llvm_to_gen.cpp b/backend/src/llvm/llvm_to_gen.cpp
index 37919ec..1f30239 100644
--- a/backend/src/llvm/llvm_to_gen.cpp
+++ b/backend/src/llvm/llvm_to_gen.cpp
@@ -370,6 +370,7 @@ namespace gbe
#else
passes.add(new DataLayout(DL));
#endif
+ passes.add(createLoopUnswitchPass(true));
// Print the code before further optimizations
passes.add(createIntrinsicLoweringPass());
passes.add(createStripAttributesPass()); // Strip unsupported
attributes and calling conventions.
--
2.7.4
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