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| author | Craig Topper <craig.topper@gmail.com> | 2017-05-09 05:01:29 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2017-05-09 05:01:29 +0000 |
| commit | 61729fd036f108cf56a7fe30578faa7e50dc180b (patch) | |
| tree | 753f8ade1aa6c321ca64089e622490b045c18274 /llvm/lib/IR/ConstantRange.cpp | |
| parent | 40fd4cebf8591480693b2c213e3e8bb34e2c8ad5 (diff) | |
| download | bcm5719-llvm-61729fd036f108cf56a7fe30578faa7e50dc180b.tar.gz bcm5719-llvm-61729fd036f108cf56a7fe30578faa7e50dc180b.zip | |
[ConstantRange] Use APInt::isNullValue in place of comparing with 0. The compiler should be able to generate slightly better code for the former. NFC
llvm-svn: 302508
Diffstat (limited to 'llvm/lib/IR/ConstantRange.cpp')
| -rw-r--r-- | llvm/lib/IR/ConstantRange.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/lib/IR/ConstantRange.cpp b/llvm/lib/IR/ConstantRange.cpp index aeb1257754f..a7c857a1f9b 100644 --- a/llvm/lib/IR/ConstantRange.cpp +++ b/llvm/lib/IR/ConstantRange.cpp @@ -278,7 +278,7 @@ APInt ConstantRange::getUnsignedMax() const { } APInt ConstantRange::getUnsignedMin() const { - if (isFullSet() || (isWrappedSet() && getUpper() != 0)) + if (isFullSet() || (isWrappedSet() && !getUpper().isNullValue())) return APInt::getMinValue(getBitWidth()); return getLower(); } @@ -442,7 +442,7 @@ ConstantRange ConstantRange::unionWith(const ConstantRange &CR) const { APInt L = CR.Lower.ult(Lower) ? CR.Lower : Lower; APInt U = (CR.Upper - 1).ugt(Upper - 1) ? CR.Upper : Upper; - if (L == 0 && U == 0) + if (L.isNullValue() && U.isNullValue()) return ConstantRange(getBitWidth()); return ConstantRange(std::move(L), std::move(U)); @@ -834,7 +834,7 @@ ConstantRange::umin(const ConstantRange &Other) const { ConstantRange ConstantRange::udiv(const ConstantRange &RHS) const { - if (isEmptySet() || RHS.isEmptySet() || RHS.getUnsignedMax() == 0) + if (isEmptySet() || RHS.isEmptySet() || RHS.getUnsignedMax().isNullValue()) return ConstantRange(getBitWidth(), /*isFullSet=*/false); if (RHS.isFullSet()) return ConstantRange(getBitWidth(), /*isFullSet=*/true); @@ -842,7 +842,7 @@ ConstantRange::udiv(const ConstantRange &RHS) const { APInt Lower = getUnsignedMin().udiv(RHS.getUnsignedMax()); APInt RHS_umin = RHS.getUnsignedMin(); - if (RHS_umin == 0) { + if (RHS_umin.isNullValue()) { // We want the lowest value in RHS excluding zero. Usually that would be 1 // except for a range in the form of [X, 1) in which case it would be X. if (RHS.getUpper() == 1) |
