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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 | 3228cc259b5ca00e46af36da369a451f5736cbf4 (patch) | |
| tree | 6141451ca8d1b346ee6d2dcdd772f3dbbb9a8c69 /lib/Analysis/ScalarEvolutionNormalization.cpp | |
| parent | d99b39e43b6e8263c80425c99d4e924f08e86e43 (diff) | |
| download | llvm-3228cc259b5ca00e46af36da369a451f5736cbf4.tar.gz llvm-3228cc259b5ca00e46af36da369a451f5736cbf4.tar.bz2 llvm-3228cc259b5ca00e46af36da369a451f5736cbf4.tar.xz | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127590 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ScalarEvolutionNormalization.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolutionNormalization.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Analysis/ScalarEvolutionNormalization.cpp b/lib/Analysis/ScalarEvolutionNormalization.cpp index ac36cef89e..60e630aaab 100644 --- a/lib/Analysis/ScalarEvolutionNormalization.cpp +++ b/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: |