nicolas/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and

Browse Source 
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121120
This commit is contained in:
Jay Foad
2010-12-07 08:25:19 +00:00
parent 10e1b56e2c
commit 583abbc4df
25 changed files with 219 additions and 251 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
View File

@@ -939,8 +939,7 @@ Instruction *InstCombiner::visitICmpInstWithInstAndIntCst(ICmpInst &ICI,
// If all the high bits are known, we can do this xform.
if ((KnownZero|KnownOne).countLeadingOnes() >= SrcBits-DstBits) {
// Pull in the high bits from known-ones set.
APInt NewRHS(RHS->getValue());
NewRHS.zext(SrcBits);
APInt NewRHS = RHS->getValue().zext(SrcBits);
NewRHS |= KnownOne;
return new ICmpInst(ICI.getPredicate(), LHSI->getOperand(0),
ConstantInt::get(ICI.getContext(), NewRHS));
@@ -1022,10 +1021,8 @@ Instruction *InstCombiner::visitICmpInstWithInstAndIntCst(ICmpInst &ICI,
(AndCST->getValue().isNonNegative() && RHSV.isNonNegative()))) {
uint32_t BitWidth =
cast<IntegerType>(Cast->getOperand(0)->getType())->getBitWidth();
APInt NewCST = AndCST->getValue();
NewCST.zext(BitWidth);
APInt NewCI = RHSV;
NewCI.zext(BitWidth);
APInt NewCST = AndCST->getValue().zext(BitWidth);
APInt NewCI = RHSV.zext(BitWidth);
Value *NewAnd =
Builder->CreateAnd(Cast->getOperand(0),
ConstantInt::get(ICI.getContext(), NewCST),