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Override the TLI callback enableAggressiveFMAFusion and return true. Indeed, fmul, fmadd and fadd nodes cost the same number of cycles, so we can enable more combining heuristics to produce more fmadd nodes.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225984 91177308-0d34-0410-b5e6-96231b3b80d8
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Olivier Sallenave 2015-01-14 14:47:24 +00:00
parent 5f92811f30
commit 01cef58e6b
1 changed files with 2 additions and 0 deletions
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lib/Target/NVPTX/NVPTXISelLowering.h
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@ -507,6 +507,8 @@ public:
bool isFMAFasterThanFMulAndFAdd(EVT) const override { return true; }
bool enableAggressiveFMAFusion(EVT VT) const override { return true; }
private:
const NVPTXSubtarget &nvptxSubtarget; // cache the subtarget here