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| author | Chris Lattner <sabre@nondot.org> | 2006-05-27 01:17:40 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-05-27 01:17:40 +0000 |
| commit | b5a554ec808f511173ca978a0ae02fc91fd30c68 (patch) | |
| tree | ea399c18686650e5119bc526c1ae5db6be11da87 | |
| parent | 5ca32a6d6c2fadbc12a3cad49c2f86f62596ae4f (diff) | |
| download | llvm-b5a554ec808f511173ca978a0ae02fc91fd30c68.tar.gz llvm-b5a554ec808f511173ca978a0ae02fc91fd30c68.tar.bz2 llvm-b5a554ec808f511173ca978a0ae02fc91fd30c68.tar.xz | |
Add an interface to constant fold and instruction given it's opcode, type
and operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28516 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/Transforms/Utils/Local.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/Transforms/Utils/Local.h b/include/llvm/Transforms/Utils/Local.h index da1ce25f6d..4ee2f1a120 100644 --- a/include/llvm/Transforms/Utils/Local.h +++ b/include/llvm/Transforms/Utils/Local.h @@ -48,6 +48,15 @@ bool ConstantFoldTerminator(BasicBlock *BB); /// Constant *ConstantFoldInstruction(Instruction *I); +/// ConstantFoldInstOperands - Attempt to constant fold an instruction with the +/// specified opcode and operands. If successful, the constant result is +/// returned, if not, null is returned. Note that this function can fail when +/// attempting to fold instructions like loads and stores, which have no +/// constant expression form. +/// +Constant *ConstantFoldInstOperands(unsigned Opc, const Type *DestTy, + const std::vector<Constant*> &Ops); + /// ConstantFoldLoadThroughGEPConstantExpr - Given a constant and a /// getelementptr constantexpr, return the constant value being addressed by the |