OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nir: define behavior of nir_op_bfm and nir_op_u/ibfe according to SM5 spec.

Browse Source 
That is: the five least significant bits provide the values of
'bits' and 'offset' which is the case for all hardware currently
supported by NIR and using the bfm/bfe instructions.
This patch also changes the lowering of bitfield_insert/extract
using shifts to not use bfm and removes the flag 'lower_bfm'.

Tested-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Daniel Schürmann
2019-01-26 09:12:46 +01:00
committed by Daniel Schürmann
parent a74f256c58
commit 165b7f3a44
6 changed files with 18 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/compiler/nir/nir.h
View File

@@ -2282,18 +2282,16 @@ typedef struct nir_shader_compiler_options {
bool lower_fmod;
/** Lowers ibitfield_extract/ubitfield_extract to ibfe/ubfe. */
bool lower_bitfield_extract;
/** Lowers ibitfield_extract/ubitfield_extract to bfm, compares, shifts. */
/** Lowers ibitfield_extract/ubitfield_extract to compares, shifts. */
bool lower_bitfield_extract_to_shifts;
/** Lowers bitfield_insert to bfi/bfm */
bool lower_bitfield_insert;
/** Lowers bitfield_insert to bfm, compares, and shifts. */
/** Lowers bitfield_insert to compares, and shifts. */
bool lower_bitfield_insert_to_shifts;
/** Lowers bitfield_reverse to shifts. */
bool lower_bitfield_reverse;
/** Lowers bit_count to shifts. */
bool lower_bit_count;
/** Lowers bfm to shifts and subtracts. */
bool lower_bfm;
/** Lowers ifind_msb to compare and ufind_msb */
bool lower_ifind_msb;
/** Lowers find_lsb to ufind_msb and logic ops */