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Add generic fmad DAG node.

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This allows sharing of FMA forming combines to work
with instructions that have the same semantics as a separate
multiply and add.

This is expand by default, and only formed post legalization
so it shouldn't have much impact on targets that do not want it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230070 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault
2015-02-20 22:10:33 +00:00
parent d5b5198e6d
commit 4bacfe2095
6 changed files with 172 additions and 95 deletions
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lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
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@@ -187,6 +187,7 @@ std::string SDNode::getOperationName(const SelectionDAG *G) const {
case ISD::FMUL: return "fmul";
case ISD::FDIV: return "fdiv";
case ISD::FMA: return "fma";
case ISD::FMAD: return "fmad";
case ISD::FREM: return "frem";
case ISD::FCOPYSIGN: return "fcopysign";
case ISD::FGETSIGN: return "fgetsign";