From: Nate Begeman <natebegeman@mac.com>
Date: Thu, 24 Mar 2005 20:07:16 +0000 (+0000)
Subject: Commit Gabor Greif's patch to use iterators in lowering intrinsics.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2daec457510247c8b931d3f4af8a32066e442dca;p=oota-llvm.git

Commit Gabor Greif's patch to use iterators in lowering intrinsics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20816 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPC32ISelSimple.cpp b/lib/Target/PowerPC/PPC32ISelSimple.cpp
index f2b5cec2e19..4793e4b73c9 100644
--- a/lib/Target/PowerPC/PPC32ISelSimple.cpp
+++ b/lib/Target/PowerPC/PPC32ISelSimple.cpp
@@ -1928,15 +1928,16 @@ void PPC32ISel::LowerUnknownIntrinsicFunctionCalls(Function &F) {
             BB->getInstList().erase(CI);
             break;
           }
-          default:
+          default: {
             // All other intrinsic calls we must lower.
-            Instruction *Before = CI->getPrev();
+            BasicBlock::iterator me(CI);
+            bool atBegin(BB->begin() == me);
+            if (!atBegin)
+              --me;
             TM.getIntrinsicLowering().LowerIntrinsicCall(CI);
-            if (Before) {        // Move iterator to instruction after call
-              I = Before; ++I;
-            } else {
-              I = BB->begin();
-            }
+            // Move iterator to instruction after call
+            I = atBegin ? BB->begin() : ++me;
+          }
           }
 }