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| author | Andrew Trick <atrick@apple.com> | 2011-03-14 16:50:06 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-03-14 16:50:06 +0000 |
| commit | 8b55b736b16f913b7d236d612a6f3acdb73183d1 (patch) | |
| tree | 5b14104ccf161e17aec4f3a8c52b88aae1512c85 /llvm/lib/Analysis/ScalarEvolutionNormalization.cpp | |
| parent | 328b223bb1d83bdb01bff36e832ace60e6ff37dd (diff) | |
| download | bcm5719-llvm-8b55b736b16f913b7d236d612a6f3acdb73183d1.tar.gz bcm5719-llvm-8b55b736b16f913b7d236d612a6f3acdb73183d1.zip | |
Added SCEV::NoWrapFlags to manage unsigned, signed, and self wrap
properties.
Added the self-wrap flag for SCEV::AddRecExpr.
A slew of temporary FIXMEs indicate the intention of the no-self-wrap flag
without changing behavior in this revision.
llvm-svn: 127590
Diffstat (limited to 'llvm/lib/Analysis/ScalarEvolutionNormalization.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolutionNormalization.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp b/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp index ac36cef89eb..60e630aaab8 100644 --- a/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp +++ b/llvm/lib/Analysis/ScalarEvolutionNormalization.cpp @@ -97,7 +97,8 @@ const SCEV *llvm::TransformForPostIncUse(TransformKind Kind, const SCEV *N = TransformForPostIncUse(Kind, O, LUser, 0, Loops, SE, DT); Operands.push_back(N); } - const SCEV *Result = SE.getAddRecExpr(Operands, L); + // Conservatively use AnyWrap until/unless we need FlagNW. + const SCEV *Result = SE.getAddRecExpr(Operands, L, SCEV::FlagAnyWrap); switch (Kind) { default: llvm_unreachable("Unexpected transform name!"); case NormalizeAutodetect: |
