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Clarify and simplify.

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llvm-svn: 75366
This commit is contained in:
Nick Lewycky 2009-07-11 17:04:01 +00:00
parent 6f78ed8f74
commit 58a6fd9824
2 changed files with 4 additions and 4 deletions
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6
include/llvm/Support/ConstantRange.h
View File

@ -58,9 +58,9 @@ public:
/// assert out if the two APInt's are not the same bit width.
ConstantRange(const APInt& Lower, const APInt& Upper);
/// makeICmpRegion - Return the range of values that a value must be within
/// in order for the comparison specified by the predicate against range
/// Other to be true.
/// makeICmpRegion - Produce the smallest range that contains all values that
/// might satisfy the comparison specified by Pred when compared to any value
/// contained within Other.
static ConstantRange makeICmpRegion(unsigned Pred,
const ConstantRange &Other);

2
lib/Support/ConstantRange.cpp
View File

@ -53,7 +53,7 @@ ConstantRange ConstantRange::makeICmpRegion(unsigned Pred,
switch (Pred) {
default: assert(!"Invalid ICmp predicate to makeICmpRegion()");
case ICmpInst::ICMP_EQ:
return ConstantRange(CR.getLower(), CR.getUpper());
return CR;
case ICmpInst::ICMP_NE:
if (CR.isSingleElement())
return ConstantRange(CR.getUpper(), CR.getLower());