RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-01-11 14:16:59 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

simplify some code.

Browse Source 
llvm-svn: 44295
This commit is contained in:
Chris Lattner 2007-11-23 22:36:49 +00:00
parent 57a40dc2ad
commit cdc6bbd519
1 changed files with 1 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/Analysis/ScalarEvolution.cpp
View File

@ -1416,11 +1416,7 @@ SCEVHandle ScalarEvolutionsImpl::createNodeForPHI(PHINode *PN) {
/// it returns 2. If S is guaranteed to be 0, it returns the bitwidth of S.
static uint32_t GetMinTrailingZeros(SCEVHandle S) {
if (SCEVConstant *C = dyn_cast<SCEVConstant>(S))
// APInt::countTrailingZeros() returns the number of trailing zeros in its
// internal representation, which length may be greater than the represented
// value bitwidth. This is why we use a min operation here.
return std::min(C->getValue()->getValue().countTrailingZeros(),
C->getBitWidth());
return C->getValue()->getValue().countTrailingZeros();
if (SCEVTruncateExpr *T = dyn_cast<SCEVTruncateExpr>(S))
return std::min(GetMinTrailingZeros(T->getOperand()), T->getBitWidth());