commit b9ed18f2cb9df4c14feecb574fbffff9ce75644a
author Eli Friedman <eli.friedman@gmail.com> Wed May 18 00:32:01 2011 +0000
committer Eli Friedman <eli.friedman@gmail.com> Wed May 18 00:32:01 2011 +0000
tree befede0242d913accf2798520f31d657a68112f3
parent 7d7ad8374f19298832da821a44b85f2d92716e79

Use ReplaceInstUsesWith instead of replaceAllUsesWith where appropriate in instcombine.

llvm-svn: 131512

llvm/lib/Transforms/InstCombine/InstructionCombining.cpp

diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index 7a84598..3441cf6 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -1261,7 +1261,7 @@
       case Intrinsic::sadd_with_overflow:
         if (*EV.idx_begin() == 0) {  // Normal result.
           Value *LHS = II->getArgOperand(0), *RHS = II->getArgOperand(1);
-          II->replaceAllUsesWith(UndefValue::get(II->getType()));
+          ReplaceInstUsesWith(*II, UndefValue::get(II->getType()));
           EraseInstFromFunction(*II);
           return BinaryOperator::CreateAdd(LHS, RHS);
         }
@@ -1278,7 +1278,7 @@
       case Intrinsic::ssub_with_overflow:
         if (*EV.idx_begin() == 0) {  // Normal result.
           Value *LHS = II->getArgOperand(0), *RHS = II->getArgOperand(1);
-          II->replaceAllUsesWith(UndefValue::get(II->getType()));
+          ReplaceInstUsesWith(*II, UndefValue::get(II->getType()));
           EraseInstFromFunction(*II);
           return BinaryOperator::CreateSub(LHS, RHS);
         }
@@ -1287,7 +1287,7 @@
       case Intrinsic::smul_with_overflow:
         if (*EV.idx_begin() == 0) {  // Normal result.
           Value *LHS = II->getArgOperand(0), *RHS = II->getArgOperand(1);
-          II->replaceAllUsesWith(UndefValue::get(II->getType()));
+          ReplaceInstUsesWith(*II, UndefValue::get(II->getType()));
           EraseInstFromFunction(*II);
           return BinaryOperator::CreateMul(LHS, RHS);
         }