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-rw-r--r--compiler/optimizing/instruction_simplifier_shared.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/compiler/optimizing/instruction_simplifier_shared.h b/compiler/optimizing/instruction_simplifier_shared.h
index de70ec5a8a..8e61109b0e 100644
--- a/compiler/optimizing/instruction_simplifier_shared.h
+++ b/compiler/optimizing/instruction_simplifier_shared.h
@@ -77,6 +77,14 @@ bool TryExtractVecArrayAccessAddress(HVecMemoryOperation* access, HInstruction*
// Add(c, Sub(b, a))
bool TryReplaceSubSubWithSubAdd(HSub* last_sub);
+// ARM does not contain instruction ROL so replace
+// ROL dest, a, distance
+// with
+// NEG neg, distance
+// ROR dest, a, neg
+// before GVN to give it a chance to deduplicate the instructions, if it's able.
+void UnfoldRotateLeft(HRol* rol);
+
} // namespace art
#endif // ART_COMPILER_OPTIMIZING_INSTRUCTION_SIMPLIFIER_SHARED_H_