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[ARM] Add more pattern matching for f16 <-> f64 conversions
authorBradley Smith <bradley.smith@arm.com>
Mon, 23 Mar 2015 15:59:54 +0000 (15:59 +0000)
committerBradley Smith <bradley.smith@arm.com>
Mon, 23 Mar 2015 15:59:54 +0000 (15:59 +0000)
commitde5be4657f8311b78bcea068c282c61351efcdfb
tree5580c835c93bee7d005a79243adcf6c689ab782btree | snapshot
parentcab2a096fdf27f1c3cf32ebc777e3560ac0dd0f5commit | diff
[ARM] Add more pattern matching for f16 <-> f64 conversions

Specifically when the conversion is done in two steps, f16 -> f32 -> f64.

For example:

%1 = tail call float @llvm.convert.from.fp16.f32(i16 %0)
%conv = fpext float %1 to double

to:

vcvtb.f64.f16

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232954 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/ARM/ARMInstrVFP.td diff | blob | history
test/CodeGen/ARM/fp16-64.ll [new file with mode: 0644] blob
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