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| author | Reid Spencer <rspencer@reidspencer.com> | 2006-12-12 05:38:50 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2006-12-12 05:38:50 +0000 |
| commit | ca104e80eed9daebabc09c9f79b9796a4d0d857c (patch) | |
| tree | 76689d639ed8590dba30a87fea773acb962cce4d | |
| parent | 2f96e7d24136be4619e8268348a215103c29fbbc (diff) | |
| download | bcm5719-llvm-ca104e80eed9daebabc09c9f79b9796a4d0d857c.tar.gz bcm5719-llvm-ca104e80eed9daebabc09c9f79b9796a4d0d857c.zip | |
Don't create usless casts for same-bith-width floating point casts.
llvm-svn: 32475
| -rw-r--r-- | llvm/lib/VMCore/Constants.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/VMCore/Constants.cpp b/llvm/lib/VMCore/Constants.cpp index 2aa0524dfd0..710b738cd24 100644 --- a/llvm/lib/VMCore/Constants.cpp +++ b/llvm/lib/VMCore/Constants.cpp @@ -1531,9 +1531,10 @@ Constant *ConstantExpr::getFPCast(Constant *C, const Type *Ty) { "Invalid cast"); unsigned SrcBits = C->getType()->getPrimitiveSizeInBits(); unsigned DstBits = Ty->getPrimitiveSizeInBits(); + if (SrcBits == DstBits) + return C; // Avoid a useless cast Instruction::CastOps opcode = - (SrcBits == DstBits ? Instruction::BitCast : - (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt)); + (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt); return getCast(opcode, C, Ty); } |
