From: Chris Lattner <sabre@nondot.org>
Date: Mon, 12 Jan 2004 18:25:56 +0000 (+0000)
Subject: llvm::ConstantFoldInstruction
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=77ab3f1c89cf810e355014d575138f7e51fa1931;p=oota-llvm.git

llvm::ConstantFoldInstruction


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10787 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Transforms/Utils/Local.h b/include/llvm/Transforms/Utils/Local.h
index c786c965126..05db3b12552 100644
--- a/include/llvm/Transforms/Utils/Local.h
+++ b/include/llvm/Transforms/Utils/Local.h
@@ -38,6 +38,13 @@ bool doConstantPropagation(BasicBlock::iterator &I);
 ///
 bool ConstantFoldTerminator(BasicBlock *BB);
 
+/// ConstantFoldInstruction - Attempt to constant fold the specified
+/// instruction.  If successful, the constant result is returned, if not, null
+/// is returned.  Note that this function can only fail when attempting to fold
+/// instructions like loads and stores, which have no constant expression form.
+///
+Constant *ConstantFoldInstruction(Instruction *I);
+
 
 //===----------------------------------------------------------------------===//
 //  Local dead code elimination...