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prog_to_nir: Use nir_op_dph

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Shader-db results on HSW:

   instructions in affected programs:     72 -> 56 (-22.22%)

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand 2015-09-22 16:57:03 -07:00
parent 999ff3c77d
commit e7496fed2a
1 changed files with 1 additions and 2 deletions
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3
src/mesa/program/prog_to_nir.c
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@ -527,8 +527,7 @@ ptn_dp4(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
static void
ptn_dph(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
{
nir_ssa_def *dp3 = nir_fdot3(b, src[0], src[1]);
ptn_move_dest(b, dest, nir_fadd(b, dp3, ptn_channel(b, src[1], W)));
ptn_move_dest(b, dest, nir_fdph(b, src[0], src[1]));
}
static void