[SCEV] Have getRangeForAffineARHelper take StartRange by const reference to avoid a copy in many of the cases.
llvm-svn: 302398
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index 7facf36..b1ab656 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -4842,7 +4842,7 @@
// from StartRange and then is changed by Step up to MaxBECount times. Signed
// argument defines if we treat Step as signed or unsigned.
static ConstantRange getRangeForAffineARHelper(APInt Step,
- ConstantRange StartRange,
+ const ConstantRange &StartRange,
const APInt &MaxBECount,
unsigned BitWidth, bool Signed) {
// If either Step or MaxBECount is 0, then the expression won't change, and we