diff options
Diffstat (limited to 'lib/Analysis/TargetTransformInfo.cpp')
| -rw-r--r-- | lib/Analysis/TargetTransformInfo.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Analysis/TargetTransformInfo.cpp b/lib/Analysis/TargetTransformInfo.cpp index 16ee6eb35c..99720d4d03 100644 --- a/lib/Analysis/TargetTransformInfo.cpp +++ b/lib/Analysis/TargetTransformInfo.cpp @@ -258,6 +258,9 @@ struct NoTTI : ImmutablePass, TargetTransformInfo { } unsigned getUserCost(const User *U) const { + if (isa<PHINode>(U)) + return TCC_Free; // Model all PHI nodes as free. + if (const GEPOperator *GEP = dyn_cast<GEPOperator>(U)) // In the basic model we just assume that all-constant GEPs will be // folded into their uses via addressing modes. |