RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-12-22 19:49:49 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Simplify this code; these casts aren't necessary.

Browse Source 
llvm-svn: 97048
This commit is contained in:
Dan Gohman 2010-02-24 19:31:06 +00:00
parent 84308c9ca0
commit fa19b098dc
1 changed files with 4 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
lib/Analysis/ScalarEvolution.cpp
View File

@ -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),