From 43f33dd550a2d165c41cbf01cae97d513dd5002c Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Thu, 2 Jul 2009 00:17:47 +0000
Subject: Fix a bunch of other places that used operator[] to test whether a
 key is present in a std::map or DenseMap to use find instead.

llvm-svn: 74676
---
 llvm/lib/Transforms/Scalar/JumpThreading.cpp   | 16 ++++++++++------
 llvm/lib/Transforms/Scalar/TailDuplication.cpp | 14 +++++++++-----
 2 files changed, 19 insertions(+), 11 deletions(-)

(limited to 'llvm/lib/Transforms')

diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp
index 5a70fc3bc6f..c3aee01e644 100644
--- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp
+++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp
@@ -935,9 +935,11 @@ bool JumpThreading::ThreadEdge(BasicBlock *BB, BasicBlock *PredBB,
    
     // Remap operands to patch up intra-block references.
     for (unsigned i = 0, e = New->getNumOperands(); i != e; ++i)
-      if (Instruction *Inst = dyn_cast<Instruction>(New->getOperand(i)))
-        if (Value *Remapped = ValueMapping[Inst])
-          New->setOperand(i, Remapped);
+      if (Instruction *Inst = dyn_cast<Instruction>(New->getOperand(i))) {
+        DenseMap<Instruction*, Value*>::iterator I = ValueMapping.find(Inst);
+        if (I != ValueMapping.end())
+          New->setOperand(i, I->second);
+      }
   }
   
   // We didn't copy the terminator from BB over to NewBB, because there is now
@@ -953,9 +955,11 @@ bool JumpThreading::ThreadEdge(BasicBlock *BB, BasicBlock *PredBB,
     Value *IV = PN->getIncomingValueForBlock(BB);
     
     // Remap the value if necessary.
-    if (Instruction *Inst = dyn_cast<Instruction>(IV))
-      if (Value *MappedIV = ValueMapping[Inst])
-        IV = MappedIV;
+    if (Instruction *Inst = dyn_cast<Instruction>(IV)) {
+      DenseMap<Instruction*, Value*>::iterator I = ValueMapping.find(Inst);
+      if (I != ValueMapping.end())
+        IV = I->second;
+    }
     PN->addIncoming(IV, NewBB);
   }
   
diff --git a/llvm/lib/Transforms/Scalar/TailDuplication.cpp b/llvm/lib/Transforms/Scalar/TailDuplication.cpp
index 99a7dee3988..c037ee96031 100644
--- a/llvm/lib/Transforms/Scalar/TailDuplication.cpp
+++ b/llvm/lib/Transforms/Scalar/TailDuplication.cpp
@@ -317,9 +317,12 @@ void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) {
   //
   BI = Branch; ++BI;  // Get an iterator to the first new instruction
   for (; BI != SourceBlock->end(); ++BI)
-    for (unsigned i = 0, e = BI->getNumOperands(); i != e; ++i)
-      if (Value *Remapped = ValueMapping[BI->getOperand(i)])
-        BI->setOperand(i, Remapped);
+    for (unsigned i = 0, e = BI->getNumOperands(); i != e; ++i) {
+      std::map<Value*, Value*>::const_iterator I =
+        ValueMapping.find(BI->getOperand(i));
+      if (I != ValueMapping.end())
+        BI->setOperand(i, I->second);
+    }
 
   // Next we check to see if any of the successors of DestBlock had PHI nodes.
   // If so, we need to add entries to the PHI nodes for SourceBlock now.
@@ -333,8 +336,9 @@ void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) {
       Value *IV = PN->getIncomingValueForBlock(DestBlock);
 
       // Remap the value if necessary...
-      if (Value *MappedIV = ValueMapping[IV])
-        IV = MappedIV;
+      std::map<Value*, Value*>::const_iterator I = ValueMapping.find(IV);
+      if (I != ValueMapping.end())
+        IV = I->second;
       PN->addIncoming(IV, SourceBlock);
     }
   }
-- 
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