replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix indentation in ScalarEvolution.cpp. 

Whitespace-only change.  (clang-formatted the whole block.)

llvm-svn: 334427
This commit is contained in:
Justin Lebar 2018-06-11 18:57:27 +00:00
parent dd9415d550
commit 7b4656c1d3
1 changed files with 24 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
llvm/lib/Analysis/ScalarEvolution.cpp
View File

@ -6218,33 +6218,33 @@ const SCEV *ScalarEvolution::createSCEV(Value *V) {
}
break;
case Instruction::Shl:
// Turn shift left of a constant amount into a multiply.
if (ConstantInt *SA = dyn_cast<ConstantInt>(BO->RHS)) {
uint32_t BitWidth = cast<IntegerType>(SA->getType())->getBitWidth();
case Instruction::Shl:
// Turn shift left of a constant amount into a multiply.
if (ConstantInt *SA = dyn_cast<ConstantInt>(BO->RHS)) {
uint32_t BitWidth = cast<IntegerType>(SA->getType())->getBitWidth();
// If the shift count is not less than the bitwidth, the result of
// the shift is undefined. Don't try to analyze it, because the
// resolution chosen here may differ from the resolution chosen in
// other parts of the compiler.
if (SA->getValue().uge(BitWidth))
break;
// If the shift count is not less than the bitwidth, the result of
// the shift is undefined. Don't try to analyze it, because the
// resolution chosen here may differ from the resolution chosen in
// other parts of the compiler.
if (SA->getValue().uge(BitWidth))
break;
// It is currently not resolved how to interpret NSW for left
// shift by BitWidth - 1, so we avoid applying flags in that
// case. Remove this check (or this comment) once the situation
// is resolved. See
// http://lists.llvm.org/pipermail/llvm-dev/2015-April/084195.html
// and http://reviews.llvm.org/D8890 .
auto Flags = SCEV::FlagAnyWrap;
if (BO->Op && SA->getValue().ult(BitWidth - 1))
Flags = getNoWrapFlagsFromUB(BO->Op);
// It is currently not resolved how to interpret NSW for left
// shift by BitWidth - 1, so we avoid applying flags in that
// case. Remove this check (or this comment) once the situation
// is resolved. See
// http://lists.llvm.org/pipermail/llvm-dev/2015-April/084195.html
// and http://reviews.llvm.org/D8890 .
auto Flags = SCEV::FlagAnyWrap;
if (BO->Op && SA->getValue().ult(BitWidth - 1))
Flags = getNoWrapFlagsFromUB(BO->Op);
Constant *X = ConstantInt::get(getContext(),
APInt::getOneBitSet(BitWidth, SA->getZExtValue()));
return getMulExpr(getSCEV(BO->LHS), getSCEV(X), Flags);
}
break;
Constant *X = ConstantInt::get(
getContext(), APInt::getOneBitSet(BitWidth, SA->getZExtValue()));
return getMulExpr(getSCEV(BO->LHS), getSCEV(X), Flags);
}
break;
case Instruction::AShr: {
// AShr X, C, where C is a constant.