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nir: use more nir_ffma_imm variants

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nir_ffma_imm has several variants that allows specific arguments to be
immediates. Use them for simplicity.

Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23179>
This commit is contained in:
Erik Faye-Lund 2023-05-09 23:53:24 +01:00 • committed by Marge Bot
parent c4d2ebd285
commit 4cfb8005f0
2 changed files with 7 additions and 7 deletions
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4
src/compiler/nir/nir_lower_double_ops.c
View file

@ -146,8 +146,8 @@ lower_rcp(nir_builder *b, nir_ssa_def *src)
* See https://en.wikipedia.org/wiki/Division_algorithm for more details.
*/
ra = nir_ffma(b, nir_fneg(b, ra), nir_ffma(b, ra, src, nir_imm_double(b, -1)), ra);
ra = nir_ffma(b, nir_fneg(b, ra), nir_ffma(b, ra, src, nir_imm_double(b, -1)), ra);
ra = nir_ffma(b, nir_fneg(b, ra), nir_ffma_imm2(b, ra, src, -1), ra);
ra = nir_ffma(b, nir_fneg(b, ra), nir_ffma_imm2(b, ra, src, -1), ra);
return fix_inv_result(b, ra, src, new_exp);
}

10
src/gallium/drivers/r600/sfn/sfn_nir_lower_alu.cpp
View file

@ -111,15 +111,15 @@ LowerSinCos::lower(nir_instr *instr)
assert(alu->op == nir_op_fsin || alu->op == nir_op_fcos);
auto fract = nir_ffract(b,
nir_ffma(b,
nir_ssa_for_alu_src(b, alu, 0),
nir_imm_float(b, 0.15915494),
nir_imm_float(b, 0.5)));
nir_ffma_imm12(b,
nir_ssa_for_alu_src(b, alu, 0),
0.15915494,
0.5));
auto normalized =
m_gxf_level != R600
? nir_fadd_imm(b, fract, -0.5)
: nir_ffma(b, fract, nir_imm_float(b, 2.0f * M_PI), nir_imm_float(b, -M_PI));
: nir_ffma_imm12(b, fract, 2.0f * M_PI, -M_PI);
if (alu->op == nir_op_fsin)
return nir_fsin_amd(b, normalized);