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nir: In prog->nir, don't wrap dot products with ptn_channel(..., X).

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ptn_move_dest and nir_fadd already take care of replicating the last
channel out, so we can just use a scalar and skip splatting it.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2015-03-30 05:17:56 -07:00
parent 218e45e2f7
commit 4b38c5c783
1 changed files with 4 additions and 4 deletions
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8
src/mesa/program/prog_to_nir.c
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@ -499,25 +499,25 @@ ptn_xpd(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
static void
ptn_dp2(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
{
ptn_move_dest(b, dest, ptn_channel(b, nir_fdot2(b, src[0], src[1]), X));
ptn_move_dest(b, dest, nir_fdot2(b, src[0], src[1]));
}
static void
ptn_dp3(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
{
ptn_move_dest(b, dest, ptn_channel(b, nir_fdot3(b, src[0], src[1]), X));
ptn_move_dest(b, dest, nir_fdot3(b, src[0], src[1]));
}
static void
ptn_dp4(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
{
ptn_move_dest(b, dest, ptn_channel(b, nir_fdot4(b, src[0], src[1]), X));
ptn_move_dest(b, dest, nir_fdot4(b, src[0], src[1]));
}
static void
ptn_dph(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
{
nir_ssa_def *dp3 = ptn_channel(b, nir_fdot3(b, src[0], src[1]), X);
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)));
}