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James Greenhalgh a9bbb2f3a9 [Arm] Do not lower vmax/vmin to Neon instructions
On some Arm cores there is a performance penalty when forwarding from an
S register to a D register.  Calculating VMAX in a D register creates
false forwarding hazards, so don't do that unless we're on a core which
specifically asks for it.

Patch by James Greenhalgh

Differential Revision: https://reviews.llvm.org/D75248
2020-03-10 10:48:48 +00:00
2020-02-10 10:33:58 -08:00
2019-07-17 07:02:02 +00:00
2019-10-03 14:57:49 +00:00

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