Mesa (master): nir: remove redundant opcode u2ump
GitLab Mirror
gitlab-mirror at kemper.freedesktop.org
Thu Sep 10 23:50:12 UTC 2020
Module: Mesa
Branch: master
Commit: 3d3df8dbffd5d4b38c802ccd38967e4ca117901e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=3d3df8dbffd5d4b38c802ccd38967e4ca117901e
Author: Marek Olšák <marek.olsak at amd.com>
Date: Fri Sep 4 01:51:49 2020 -0400
nir: remove redundant opcode u2ump
Reviewed-by: Rob Clark <robdclark at chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6283>
---
src/amd/llvm/ac_nir_to_llvm.c | 1 -
src/compiler/glsl/glsl_to_nir.cpp | 2 +-
src/compiler/nir/nir_opcodes.py | 3 ++-
src/compiler/nir/nir_opt_algebraic.py | 14 +++++++++-----
src/panfrost/util/pan_lower_framebuffer.c | 6 +++---
5 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/src/amd/llvm/ac_nir_to_llvm.c b/src/amd/llvm/ac_nir_to_llvm.c
index 25c71edbc5d..2645cfbffcd 100644
--- a/src/amd/llvm/ac_nir_to_llvm.c
+++ b/src/amd/llvm/ac_nir_to_llvm.c
@@ -971,7 +971,6 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
break;
case nir_op_u2u8:
case nir_op_u2u16:
- case nir_op_u2ump:
case nir_op_u2u32:
case nir_op_u2u64:
if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])) < ac_get_elem_bits(&ctx->ac, def_type))
diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index 4722a77af47..90a8ed13747 100644
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -1990,7 +1990,7 @@ nir_visitor::visit(ir_expression *ir)
}
case ir_unop_u2ump: {
- result = nir_build_alu(&b, nir_op_u2ump, srcs[0], NULL, NULL, NULL);
+ result = nir_build_alu(&b, nir_op_i2imp, srcs[0], NULL, NULL, NULL);
break;
}
diff --git a/src/compiler/nir/nir_opcodes.py b/src/compiler/nir/nir_opcodes.py
index e19d7b00a7d..f3ed96ae69a 100644
--- a/src/compiler/nir/nir_opcodes.py
+++ b/src/compiler/nir/nir_opcodes.py
@@ -274,7 +274,8 @@ for src_t in [tint, tuint, tfloat, tbool]:
# precision.
unop_numeric_convert("f2fmp", tfloat16, tfloat, opcodes["f2f16"].const_expr)
unop_numeric_convert("i2imp", tint16, tint, opcodes["i2i16"].const_expr)
-unop_numeric_convert("u2ump", tuint16, tuint, opcodes["u2u16"].const_expr)
+# u2ump isn't defined, because the behavior is equal to i2imp if src has more
+# than 16 bits.
# Unary floating-point rounding operations.
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index 11b0d00de44..3e42f2552e4 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -967,15 +967,15 @@ optimizations.extend([
# Conversions from 16 bits to 32 bits and back can always be removed
(('f2fmp', ('f2f32', 'a at 16')), a),
(('i2imp', ('i2i32', 'a at 16')), a),
- (('u2ump', ('u2u32', 'a at 16')), a),
+ (('i2imp', ('u2u32', 'a at 16')), a),
(('f2fmp', ('b2f32', 'a at 1')), ('b2f16', a)),
(('i2imp', ('b2i32', 'a at 1')), ('b2i16', a)),
- (('u2ump', ('b2i32', 'a at 1')), ('b2i16', a)),
+ (('i2imp', ('b2i32', 'a at 1')), ('b2i16', a)),
# Conversions to 16 bits would be lossy so they should only be removed if
# the instruction was generated by the precision lowering pass.
(('f2f32', ('f2fmp', 'a at 32')), a),
(('i2i32', ('i2imp', 'a at 32')), a),
- (('u2u32', ('u2ump', 'a at 32')), a),
+ (('u2u32', ('i2imp', 'a at 32')), a),
(('ffloor', 'a(is_integral)'), a),
(('fceil', 'a(is_integral)'), a),
@@ -1899,8 +1899,12 @@ for i in range(2, 4 + 1):
optimizations += [
((to_16, vec_inst + suffix_in), vec_inst + out_16, '!options->vectorize_vec2_16bit'),
- ((to_mp, vec_inst + suffix_in), vec_inst + out_mp, '!options->vectorize_vec2_16bit')
]
+ # u2ump doesn't exist, because it's equal to i2imp
+ if T in ['f', 'i']:
+ optimizations += [
+ ((to_mp, vec_inst + suffix_in), vec_inst + out_mp, '!options->vectorize_vec2_16bit')
+ ]
# This section contains "late" optimizations that should be run before
# creating ffmas and calling regular optimizations for the final time.
@@ -2065,7 +2069,7 @@ late_optimizations = [
# nir_opt_algebraic so any remaining ones are required.
(('f2fmp', a), ('f2f16', a)),
(('i2imp', a), ('i2i16', a)),
- (('u2ump', a), ('u2u16', a)),
+ (('i2imp', a), ('u2u16', a)),
# Section 8.8 (Integer Functions) of the GLSL 4.60 spec says:
#
diff --git a/src/panfrost/util/pan_lower_framebuffer.c b/src/panfrost/util/pan_lower_framebuffer.c
index 1b733687b33..1c497351ea2 100644
--- a/src/panfrost/util/pan_lower_framebuffer.c
+++ b/src/panfrost/util/pan_lower_framebuffer.c
@@ -315,7 +315,7 @@ pan_unpack_unorm_small(nir_builder *b, nir_ssa_def *pack,
nir_ssa_def *scales, nir_ssa_def *shifts)
{
nir_ssa_def *channels = nir_unpack_32_4x8(b, nir_channel(b, pack, 0));
- nir_ssa_def *raw = nir_ushr(b, nir_u2ump(b, channels), shifts);
+ nir_ssa_def *raw = nir_ushr(b, nir_i2imp(b, channels), shifts);
return nir_fmul(b, nir_u2f16(b, raw), scales);
}
@@ -402,7 +402,7 @@ pan_unpack_unorm_1010102(nir_builder *b, nir_ssa_def *packed)
{
nir_ssa_def *p = nir_channel(b, packed, 0);
nir_ssa_def *bytes = nir_unpack_32_4x8(b, p);
- nir_ssa_def *ubytes = nir_u2ump(b, bytes);
+ nir_ssa_def *ubytes = nir_i2imp(b, bytes);
nir_ssa_def *shifts = nir_ushr(b, pan_replicate_4(b, nir_channel(b, ubytes, 3)),
nir_imm_ivec4(b, 0, 2, 4, 6));
@@ -449,7 +449,7 @@ pan_unpack_uint_1010102(nir_builder *b, nir_ssa_def *packed)
nir_ssa_def *mask = nir_iand(b, shift,
nir_imm_ivec4(b, 0x3ff, 0x3ff, 0x3ff, 0x3));
- return nir_u2ump(b, mask);
+ return nir_i2imp(b, mask);
}
/* NIR means we can *finally* catch a break */
More information about the mesa-commit
mailing list