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| author | Chris Lattner <sabre@nondot.org> | 2008-10-16 05:26:51 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-10-16 05:26:51 +0000 |
| commit | 868510328fc0b25ca97f2fba466a77c2c4e29c45 (patch) | |
| tree | 03db7e663b72703ab1019a660fcee949213c4eba /lib/VMCore/ConstantFold.cpp | |
| parent | 8e8b8a223c2b0e69f44c0639f846260c8011668f (diff) | |
| download | external_llvm-868510328fc0b25ca97f2fba466a77c2c4e29c45.zip external_llvm-868510328fc0b25ca97f2fba466a77c2c4e29c45.tar.gz external_llvm-868510328fc0b25ca97f2fba466a77c2c4e29c45.tar.bz2 | |
apply Eli's patch for PR2165 and provide a testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57625 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
| -rw-r--r-- | lib/VMCore/ConstantFold.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index 93ee7fe..fcbda21 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -133,6 +133,12 @@ static Constant *FoldBitCast(Constant *V, const Type *DestTy) { if (ConstantVector *CV = dyn_cast<ConstantVector>(V)) return BitCastConstantVector(CV, DestPTy); } + + // Canonicalize scalar-to-vector bitcasts into vector-to-vector bitcasts + // This allows for other simplifications (although some of them + // can only be handled by Analysis/ConstantFolding.cpp). + if (isa<ConstantInt>(V) || isa<ConstantFP>(V)) + return ConstantExpr::getBitCast(ConstantVector::get(&V, 1), DestPTy); } // Finally, implement bitcast folding now. The code below doesn't handle |