[LVI] Const correct and rename the LVILatticeVal parameter to getPredicateResult. NFC
Previously it was non-const reference named Result which would tend to make someone think that it was an outparam when really its an input.
llvm-svn: 305114
diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp
index de5d80b..9fd196e 100644
--- a/llvm/lib/Analysis/LazyValueInfo.cpp
+++ b/llvm/lib/Analysis/LazyValueInfo.cpp
@@ -1661,25 +1661,24 @@
}
static LazyValueInfo::Tristate getPredicateResult(unsigned Pred, Constant *C,
- LVILatticeVal &Result,
+ const LVILatticeVal &Val,
const DataLayout &DL,
TargetLibraryInfo *TLI) {
// If we know the value is a constant, evaluate the conditional.
Constant *Res = nullptr;
- if (Result.isConstant()) {
- Res = ConstantFoldCompareInstOperands(Pred, Result.getConstant(), C, DL,
- TLI);
+ if (Val.isConstant()) {
+ Res = ConstantFoldCompareInstOperands(Pred, Val.getConstant(), C, DL, TLI);
if (ConstantInt *ResCI = dyn_cast<ConstantInt>(Res))
return ResCI->isZero() ? LazyValueInfo::False : LazyValueInfo::True;
return LazyValueInfo::Unknown;
}
- if (Result.isConstantRange()) {
+ if (Val.isConstantRange()) {
ConstantInt *CI = dyn_cast<ConstantInt>(C);
if (!CI) return LazyValueInfo::Unknown;
- const ConstantRange &CR = Result.getConstantRange();
+ const ConstantRange &CR = Val.getConstantRange();
if (Pred == ICmpInst::ICMP_EQ) {
if (!CR.contains(CI->getValue()))
return LazyValueInfo::False;
@@ -1704,20 +1703,20 @@
return LazyValueInfo::Unknown;
}
- if (Result.isNotConstant()) {
+ if (Val.isNotConstant()) {
// If this is an equality comparison, we can try to fold it knowing that
// "V != C1".
if (Pred == ICmpInst::ICMP_EQ) {
// !C1 == C -> false iff C1 == C.
Res = ConstantFoldCompareInstOperands(ICmpInst::ICMP_NE,
- Result.getNotConstant(), C, DL,
+ Val.getNotConstant(), C, DL,
TLI);
if (Res->isNullValue())
return LazyValueInfo::False;
} else if (Pred == ICmpInst::ICMP_NE) {
// !C1 != C -> true iff C1 == C.
Res = ConstantFoldCompareInstOperands(ICmpInst::ICMP_NE,
- Result.getNotConstant(), C, DL,
+ Val.getNotConstant(), C, DL,
TLI);
if (Res->isNullValue())
return LazyValueInfo::True;