mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2025-01-15 12:39:19 +00:00
InstCombine: Clean up some trailing whitespace. NFC
llvm-svn: 277793
This commit is contained in:
parent
9979840f59
commit
c7e4fbe11c
@ -1268,7 +1268,7 @@ static Instruction *foldBoolSextMaskToSelect(BinaryOperator &I) {
|
||||
Value *Zero = Constant::getNullValue(Op0->getType());
|
||||
return SelectInst::Create(X, Zero, Op1);
|
||||
}
|
||||
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
@ -1792,7 +1792,7 @@ Value *InstCombiner::FoldOrOfICmps(ICmpInst *LHS, ICmpInst *RHS,
|
||||
// E.g. (icmp sgt x, n) | (icmp slt x, 0) --> icmp ugt x, n
|
||||
if (Value *V = simplifyRangeCheck(RHS, LHS, /*Inverted=*/true))
|
||||
return V;
|
||||
|
||||
|
||||
// This only handles icmp of constants: (icmp1 A, C1) | (icmp2 B, C2).
|
||||
if (!LHSCst || !RHSCst) return nullptr;
|
||||
|
||||
|
@ -450,13 +450,13 @@ Instruction *InstCombiner::visitTrunc(TruncInst &CI) {
|
||||
|
||||
// Test if the trunc is the user of a select which is part of a
|
||||
// minimum or maximum operation. If so, don't do any more simplification.
|
||||
// Even simplifying demanded bits can break the canonical form of a
|
||||
// Even simplifying demanded bits can break the canonical form of a
|
||||
// min/max.
|
||||
Value *LHS, *RHS;
|
||||
if (SelectInst *SI = dyn_cast<SelectInst>(CI.getOperand(0)))
|
||||
if (matchSelectPattern(SI, LHS, RHS).Flavor != SPF_UNKNOWN)
|
||||
return nullptr;
|
||||
|
||||
|
||||
// See if we can simplify any instructions used by the input whose sole
|
||||
// purpose is to compute bits we don't care about.
|
||||
if (SimplifyDemandedInstructionBits(CI))
|
||||
@ -1104,7 +1104,7 @@ Instruction *InstCombiner::visitSExt(SExtInst &CI) {
|
||||
Type *SrcTy = Src->getType(), *DestTy = CI.getType();
|
||||
|
||||
// If we know that the value being extended is positive, we can use a zext
|
||||
// instead.
|
||||
// instead.
|
||||
bool KnownZero, KnownOne;
|
||||
ComputeSignBit(Src, KnownZero, KnownOne, 0, &CI);
|
||||
if (KnownZero) {
|
||||
|
@ -1712,7 +1712,7 @@ Instruction *InstCombiner::foldICmpWithConstant(ICmpInst &ICI,
|
||||
cast<ConstantInt>(ConstantExpr::getShl(AndCst, ShAmt));
|
||||
ConstantInt *ShiftedRHSCst =
|
||||
cast<ConstantInt>(ConstantExpr::getShl(RHS, ShAmt));
|
||||
|
||||
|
||||
if (!ShiftedAndCst->isNegative() && !ShiftedRHSCst->isNegative())
|
||||
CanFold = true;
|
||||
}
|
||||
@ -3286,7 +3286,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
|
||||
return new ICmpInst(I.getPredicate(), A, CI);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
// The following transforms are only 'worth it' if the only user of the
|
||||
// subtraction is the icmp.
|
||||
@ -4347,21 +4347,21 @@ Instruction *InstCombiner::foldFCmpIntToFPConst(FCmpInst &I, Instruction *LHSI,
|
||||
// This would allow us to handle (fptosi (x >>s 62) to float) if x is i64 f.e.
|
||||
unsigned InputSize = IntTy->getScalarSizeInBits();
|
||||
|
||||
// Following test does NOT adjust InputSize downwards for signed inputs,
|
||||
// because the most negative value still requires all the mantissa bits
|
||||
// Following test does NOT adjust InputSize downwards for signed inputs,
|
||||
// because the most negative value still requires all the mantissa bits
|
||||
// to distinguish it from one less than that value.
|
||||
if ((int)InputSize > MantissaWidth) {
|
||||
// Conversion would lose accuracy. Check if loss can impact comparison.
|
||||
int Exp = ilogb(RHS);
|
||||
if (Exp == APFloat::IEK_Inf) {
|
||||
int MaxExponent = ilogb(APFloat::getLargest(RHS.getSemantics()));
|
||||
if (MaxExponent < (int)InputSize - !LHSUnsigned)
|
||||
if (MaxExponent < (int)InputSize - !LHSUnsigned)
|
||||
// Conversion could create infinity.
|
||||
return nullptr;
|
||||
} else {
|
||||
// Note that if RHS is zero or NaN, then Exp is negative
|
||||
// Note that if RHS is zero or NaN, then Exp is negative
|
||||
// and first condition is trivially false.
|
||||
if (MantissaWidth <= Exp && Exp <= (int)InputSize - !LHSUnsigned)
|
||||
if (MantissaWidth <= Exp && Exp <= (int)InputSize - !LHSUnsigned)
|
||||
// Conversion could affect comparison.
|
||||
return nullptr;
|
||||
}
|
||||
|
@ -1279,7 +1279,7 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
|
||||
bool InstCombiner::SimplifyStoreAtEndOfBlock(StoreInst &SI) {
|
||||
assert(SI.isUnordered() &&
|
||||
"this code has not been auditted for volatile or ordered store case");
|
||||
|
||||
|
||||
BasicBlock *StoreBB = SI.getParent();
|
||||
|
||||
// Check to see if the successor block has exactly two incoming edges. If
|
||||
|
Loading…
x
Reference in New Issue
Block a user