RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-01-10 13:51:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Move variable under condition where it is used

Browse Source 
llvm-svn: 190567
This commit is contained in:
Matt Arsenault 2013-09-12 01:07:58 +00:00
parent 279eb73c79
commit cee048defc
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/Analysis/ConstantFolding.cpp
View File

@ -586,12 +586,13 @@ static Constant *SymbolicallyEvaluateBinop(unsigned Opc, Constant *Op0,
if (Opc == Instruction::Sub && DL) {
GlobalValue *GV1, *GV2;
unsigned PtrSize = DL->getPointerSizeInBits();
unsigned OpSize = DL->getTypeSizeInBits(Op0->getType());
APInt Offs1(PtrSize, 0), Offs2(PtrSize, 0);
if (IsConstantOffsetFromGlobal(Op0, GV1, Offs1, *DL))
if (IsConstantOffsetFromGlobal(Op1, GV2, Offs2, *DL) &&
GV1 == GV2) {
unsigned OpSize = DL->getTypeSizeInBits(Op0->getType());
// (&GV+C1) - (&GV+C2) -> C1-C2, pointer arithmetic cannot overflow.
// PtrToInt may change the bitwidth so we have convert to the right size
// first.