From: Dan Gohman <gohman@apple.com>
Date: Tue, 2 Jun 2009 21:48:15 +0000 (+0000)
Subject: Change ConstantFoldConstantExpression to accept a null
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7714285efd2a7f4e503f0f600667193e63ee6d08;p=oota-llvm.git

Change ConstantFoldConstantExpression to accept a null
TargetData pointer. The only thing it's used for are
calls to ConstantFoldCompareInstOperands and
ConstantFoldInstOperands, which both already accept a
null TargetData pointer. This makes
ConstantFoldConstantExpression easier to use in clients
where TargetData is optional.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72741 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/ConstantFolding.h b/include/llvm/Analysis/ConstantFolding.h
index bf360f7e884..5fdf6d2c916 100644
--- a/include/llvm/Analysis/ConstantFolding.h
+++ b/include/llvm/Analysis/ConstantFolding.h
@@ -34,7 +34,7 @@ Constant *ConstantFoldInstruction(Instruction *I, const TargetData *TD = 0);
 /// using the specified TargetData.  If successful, the constant result is
 /// result is returned, if not, null is returned.
 Constant *ConstantFoldConstantExpression(ConstantExpr *CE,
-                                         const TargetData *TD);
+                                         const TargetData *TD = 0);
 
 /// ConstantFoldInstOperands - Attempt to constant fold an instruction with the
 /// specified operands.  If successful, the constant result is returned, if not,
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index e5ab3226ce4..261c635feb4 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -317,8 +317,6 @@ Constant *llvm::ConstantFoldInstruction(Instruction *I, const TargetData *TD) {
 /// result is returned, if not, null is returned.
 Constant *llvm::ConstantFoldConstantExpression(ConstantExpr *CE,
                                                const TargetData *TD) {
-  assert(TD && "ConstantFoldConstantExpression requires a valid TargetData.");
-
   SmallVector<Constant*, 8> Ops;
   for (User::op_iterator i = CE->op_begin(), e = CE->op_end(); i != e; ++i)
     Ops.push_back(cast<Constant>(*i));