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move variables closer to their uses; add FIXMEs; NFC

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281972 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2016-09-20 14:36:14 +00:00
parent 412e71bfd8
commit c091990663
1 changed files with 10 additions and 10 deletions
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18
lib/Analysis/InstructionSimplify.cpp
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@ -1500,16 +1500,14 @@ static Value *simplifyUnsignedRangeCheck(ICmpInst *ZeroICmp,
}
static Value *SimplifyAndOfICmps(ICmpInst *Op0, ICmpInst *Op1) {
Type *ITy = Op0->getType();
ICmpInst::Predicate Pred0, Pred1;
ConstantInt *CI1, *CI2;
Value *V;
if (Value *X = simplifyUnsignedRangeCheck(Op0, Op1, /*IsAnd=*/true))
return X;
// Look for this pattern: (icmp V, C0) & (icmp V, C1)).
Type *ITy = Op0->getType();
ICmpInst::Predicate Pred0, Pred1;
const APInt *C0, *C1;
Value *V;
if (match(Op0, m_ICmp(Pred0, m_Value(V), m_APInt(C0))) &&
match(Op1, m_ICmp(Pred1, m_Specific(V), m_APInt(C1)))) {
// Make a constant range that's the intersection of the two icmp ranges.
@ -1520,6 +1518,8 @@ static Value *SimplifyAndOfICmps(ICmpInst *Op0, ICmpInst *Op1) {
return getFalse(ITy);
}
// FIXME: Use m_APInt to allow vector splat matches.
ConstantInt *CI1, *CI2;
if (!match(Op0, m_ICmp(Pred0, m_Add(m_Value(V), m_ConstantInt(CI1)),
m_ConstantInt(CI2))))
return nullptr;
@ -1685,13 +1685,13 @@ Value *llvm::SimplifyAndInst(Value *Op0, Value *Op1, const DataLayout &DL,
/// Simplify (or (icmp ...) (icmp ...)) to true when we can tell that the union
/// contains all possible values.
static Value *SimplifyOrOfICmps(ICmpInst *Op0, ICmpInst *Op1) {
ICmpInst::Predicate Pred0, Pred1;
ConstantInt *CI1, *CI2;
Value *V;
if (Value *X = simplifyUnsignedRangeCheck(Op0, Op1, /*IsAnd=*/false))
return X;
// FIXME: Use m_APInt to allow vector splat matches.
ICmpInst::Predicate Pred0, Pred1;
ConstantInt *CI1, *CI2;
Value *V;
if (!match(Op0, m_ICmp(Pred0, m_Add(m_Value(V), m_ConstantInt(CI1)),
m_ConstantInt(CI2))))
return nullptr;