diff options
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 705464e94a..7fb2e5e753 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -921,9 +921,7 @@ const SCEV *ScalarEvolution::getZeroExtendExpr(const SCEV *Op, if (MaxBECount == RecastedMaxBECount) { const Type *WideTy = IntegerType::get(getContext(), BitWidth * 2); // Check whether Start+Step*MaxBECount has no unsigned overflow. - const SCEV *ZMul = - getMulExpr(CastedMaxBECount, - getTruncateOrZeroExtend(Step, Start->getType())); + const SCEV *ZMul = getMulExpr(CastedMaxBECount, Step); const SCEV *Add = getAddExpr(Start, ZMul); const SCEV *OperandExtendedAdd = getAddExpr(getZeroExtendExpr(Start, WideTy), @@ -937,9 +935,7 @@ const SCEV *ScalarEvolution::getZeroExtendExpr(const SCEV *Op, // Similar to above, only this time treat the step value as signed. // This covers loops that count down. - const SCEV *SMul = - getMulExpr(CastedMaxBECount, - getTruncateOrSignExtend(Step, Start->getType())); + const SCEV *SMul = getMulExpr(CastedMaxBECount, Step); Add = getAddExpr(Start, SMul); OperandExtendedAdd = getAddExpr(getZeroExtendExpr(Start, WideTy), @@ -1060,9 +1056,7 @@ const SCEV *ScalarEvolution::getSignExtendExpr(const SCEV *Op, if (MaxBECount == RecastedMaxBECount) { const Type *WideTy = IntegerType::get(getContext(), BitWidth * 2); // Check whether Start+Step*MaxBECount has no signed overflow. - const SCEV *SMul = - getMulExpr(CastedMaxBECount, - getTruncateOrSignExtend(Step, Start->getType())); + const SCEV *SMul = getMulExpr(CastedMaxBECount, Step); const SCEV *Add = getAddExpr(Start, SMul); const SCEV *OperandExtendedAdd = getAddExpr(getSignExtendExpr(Start, WideTy), @@ -1076,9 +1070,7 @@ const SCEV *ScalarEvolution::getSignExtendExpr(const SCEV *Op, // Similar to above, only this time treat the step value as unsigned. // This covers loops that count up with an unsigned step. - const SCEV *UMul = - getMulExpr(CastedMaxBECount, - getTruncateOrZeroExtend(Step, Start->getType())); + const SCEV *UMul = getMulExpr(CastedMaxBECount, Step); Add = getAddExpr(Start, UMul); OperandExtendedAdd = getAddExpr(getSignExtendExpr(Start, WideTy), |