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| author | Nick Lewycky <nicholas@mxc.ca> | 2009-07-04 17:24:52 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2009-07-04 17:24:52 +0000 |
| commit | d1ec98923e2eee1fb4e6cd1f91b80210f021e301 (patch) | |
| tree | ab55d4b63dd9da804b8b1c8cb06fcc65150dfbba /lib/Analysis | |
| parent | 0cddc49b91db628353dbd7f97b8092b44d39d348 (diff) | |
| download | external_llvm-d1ec98923e2eee1fb4e6cd1f91b80210f021e301.zip external_llvm-d1ec98923e2eee1fb4e6cd1f91b80210f021e301.tar.gz external_llvm-d1ec98923e2eee1fb4e6cd1f91b80210f021e301.tar.bz2 | |
When comparing constants, consider a less wide constant to be "less complex"
than a wider one, before trying to compare their contents which will crash
if their sizes are different.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74792 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 4081562..aa4b586 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -495,6 +495,8 @@ namespace { // Compare constant values. if (const SCEVConstant *LC = dyn_cast<SCEVConstant>(LHS)) { const SCEVConstant *RC = cast<SCEVConstant>(RHS); + if (LC->getValue()->getBitWidth() != RC->getValue()->getBitWidth()) + return LC->getValue()->getBitWidth() < RC->getValue()->getBitWidth(); return LC->getValue()->getValue().ult(RC->getValue()->getValue()); } |