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| author | Dan Gohman <gohman@apple.com> | 2009-07-20 22:34:18 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-07-20 22:34:18 +0000 |
| commit | 746f3b1a9ba22d9b9622240814899417941d2480 (patch) | |
| tree | 89bbb0bb29465517e23892e6e6067f8297f93c57 /lib/Analysis/ScalarEvolution.cpp | |
| parent | b3e71893537165fb121e0ebc181689b041754b89 (diff) | |
The upper argument of ConstantRange is exclusive, not inclusive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76492 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index aadba9d9d3..c888a7a9ec 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -2644,7 +2644,9 @@ ScalarEvolution::getUnsignedRange(const SCEV *S) { APInt Mask = APInt::getAllOnesValue(BitWidth); APInt Zeros(BitWidth, 0), Ones(BitWidth, 0); ComputeMaskedBits(U->getValue(), Mask, Zeros, Ones, TD); - return ConstantRange(Ones, ~Zeros); + if (Ones == ~Zeros + 1) + return FullSet; + return ConstantRange(Ones, ~Zeros + 1); } return FullSet; |