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Add an intrinsic and codegen support for fused multiply-accumulate. The intent

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is to use this for architectures that have a native FMA instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134742 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich
2011-07-08 21:39:21 +00:00
parent cc0ddc707d
commit 33390848a7
20 changed files with 146 additions and 1 deletions
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7
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@@ -4651,6 +4651,13 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
case Intrinsic::pow:
visitPow(I);
return 0;
case Intrinsic::fma:
setValue(&I, DAG.getNode(ISD::FMA, dl,
getValue(I.getArgOperand(0)).getValueType(),
getValue(I.getArgOperand(0)),
getValue(I.getArgOperand(1)),
getValue(I.getArgOperand(2))));
return 0;
case Intrinsic::convert_to_fp16:
setValue(&I, DAG.getNode(ISD::FP32_TO_FP16, dl,
MVT::i16, getValue(I.getArgOperand(0))));