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| author | Nick Lewycky <nicholas@mxc.ca> | 2014-01-27 10:47:44 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2014-01-27 10:47:44 +0000 |
| commit | 4bfa6fecc1348f120e463138d4fb435b40d7b650 (patch) | |
| tree | 20ff3b0ecd75e4b21c1610a577975b71d04b78be /lib/Analysis/ScalarEvolution.cpp | |
| parent | f2282cac95e7849a86437e347921bc4cc28d403f (diff) | |
| download | llvm-4bfa6fecc1348f120e463138d4fb435b40d7b650.tar.gz llvm-4bfa6fecc1348f120e463138d4fb435b40d7b650.tar.bz2 llvm-4bfa6fecc1348f120e463138d4fb435b40d7b650.tar.xz | |
Fix crasher introduced in r200203 and caught by a libc++ buildbot. Don't assume that getMulExpr returns a SCEVMulExpr, it may have simplified it to something else!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200210 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 e8ee46dff8..1a15144863 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -2292,7 +2292,9 @@ const SCEV *ScalarEvolution::getUDivExactExpr(const SCEV *LHS, Operands.append(Mul->op_begin() + 1, Mul->op_end()); LHS = getMulExpr(Operands); RHS = RHSCst; - Mul = cast<SCEVMulExpr>(LHS); + Mul = dyn_cast<SCEVMulExpr>(LHS); + if (!Mul) + return getUDivExactExpr(LHS, RHS); } } } |