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nir: Add a conversion and rounding intrinsic

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This new intrinsic is capable of handling the full range of conversions
from OpenCL including rounding modes and possible saturation.  The
intention is that we'll emit this intrinsic directly from spirv_to_nir
and then lower it to ALU ops later.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6945>
This commit is contained in:
Jason Ekstrand
2020-09-30 15:19:45 -05:00
committed by Marge Bot
parent 0aa08ae2f6
commit 588bb6686b
5 changed files with 73 additions and 4 deletions
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15
src/compiler/nir/nir_print.c
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@@ -846,6 +846,8 @@ print_intrinsic_instr(nir_intrinsic_instr *instr, print_state *state)
[NIR_INTRINSIC_MEMORY_SCOPE] = "mem_scope",
[NIR_INTRINSIC_EXECUTION_SCOPE] = "exec_scope",
[NIR_INTRINSIC_IO_SEMANTICS] = "io_semantics",
[NIR_INTRINSIC_ROUNDING_MODE] = "src_type",
[NIR_INTRINSIC_SATURATE] = "src_type",
};
for (unsigned idx = 1; idx < NIR_INTRINSIC_NUM_INDEX_FLAGS; idx++) {
@@ -1004,6 +1006,19 @@ print_intrinsic_instr(nir_intrinsic_instr *instr, print_state *state)
}
break;
case NIR_INTRINSIC_ROUNDING_MODE: {
fprintf(fp, " rounding_mode=");
switch (nir_intrinsic_rounding_mode(instr)) {
case nir_rounding_mode_undef: fprintf(fp, "undef"); break;
case nir_rounding_mode_rtne: fprintf(fp, "rtne"); break;
case nir_rounding_mode_ru: fprintf(fp, "ru"); break;
case nir_rounding_mode_rd: fprintf(fp, "rd"); break;
case nir_rounding_mode_rtz: fprintf(fp, "rtz"); break;
default: fprintf(fp, "unkown"); break;
}
break;
}
default: {
unsigned off = info->index_map[idx] - 1;
assert(index_name[idx]); /* forgot to update index_name table? */