From: Chris Lattner Date: Sat, 27 May 2006 01:17:40 +0000 (+0000) Subject: Add an interface to constant fold and instruction given it's opcode, type X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b5a554ec808f511173ca978a0ae02fc91fd30c68;p=oota-llvm.git 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 --- diff --git a/include/llvm/Transforms/Utils/Local.h b/include/llvm/Transforms/Utils/Local.h index da1ce25f6d8..4ee2f1a120b 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 &Ops); + /// ConstantFoldLoadThroughGEPConstantExpr - Given a constant and a /// getelementptr constantexpr, return the constant value being addressed by the