Split the Add, Sub, and Mul instruction opcodes into separate

integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 92270b5b64..f05afeca32 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -2268,7 +2268,8 @@ void LoopStrengthReduce::OptimizeShadowIV(Loop *L) {
       /* create new increment. '++d' in above example. */
       ConstantFP *CFP = ConstantFP::get(DestTy, C->getZExtValue());
       BinaryOperator *NewIncr = 
-        BinaryOperator::Create(Incr->getOpcode(),
+        BinaryOperator::Create(Incr->getOpcode() == Instruction::Add ?
+                                 Instruction::FAdd : Instruction::FSub,
                                NewPH, CFP, "IV.S.next.", Incr);
 
       NewPH->addIncoming(NewInit, PH->getIncomingBlock(Entry));