diff options
Diffstat (limited to 'lib/Support/ConstantRange.cpp')
| -rw-r--r-- | lib/Support/ConstantRange.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp index ddf14e3..2746f7a 100644 --- a/lib/Support/ConstantRange.cpp +++ b/lib/Support/ConstantRange.cpp @@ -540,6 +540,11 @@ ConstantRange::add(const ConstantRange &Other) const { ConstantRange ConstantRange::multiply(const ConstantRange &Other) const { + // TODO: If either operand is a single element and the multiply is known to + // be non-wrapping, round the result min and max value to the appropriate + // multiple of that element. If wrapping is possible, at least adjust the + // range according to the greatest power-of-two factor of the single element. + if (isEmptySet() || Other.isEmptySet()) return ConstantRange(getBitWidth(), /*isFullSet=*/false); if (isFullSet() || Other.isFullSet()) @@ -650,7 +655,12 @@ ConstantRange::lshr(const ConstantRange &Amount) const { /// print - Print out the bounds to a stream... /// void ConstantRange::print(raw_ostream &OS) const { - OS << "[" << Lower << "," << Upper << ")"; + if (isFullSet()) + OS << "full-set"; + else if (isEmptySet()) + OS << "empty-set"; + else + OS << "[" << Lower << "," << Upper << ")"; } /// dump - Allow printing from a debugger easily... |
