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intel/fs/gen7: Fix fs_inst::flags_written() for SHADER_OPCODE_FIND_LIVE_CHANNEL.

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We need to pass a width of 32 since the opcode bashes the whole f1.0
register on IVB.  This is unlikely to have caused problems since f1.0
is largely unused currently.  That's likely to change soon though,
even on platforms other than Gen7.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Cc: 20.0 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit b8b509fb92)
This commit is contained in:
Francisco Jerez 2020-01-23 23:00:54 -08:00 • committed by Dylan Baker
parent d92cf57345
commit 5df7a39c1b
2 changed files with 3 additions and 2 deletions
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2
.pick_status.json
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@ -1030,7 +1030,7 @@
"description": "intel/fs/gen7: Fix fs_inst::flags_written() for SHADER_OPCODE_FIND_LIVE_CHANNEL.",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"master_sha": null,
"because_sha": null
},

3
src/intel/compiler/brw_fs.cpp
View file

@ -1086,9 +1086,10 @@ fs_inst::flags_written() const
opcode != BRW_OPCODE_CSEL &&
opcode != BRW_OPCODE_IF &&
opcode != BRW_OPCODE_WHILE)) ||
opcode == SHADER_OPCODE_FIND_LIVE_CHANNEL ||
opcode == FS_OPCODE_FB_WRITE) {
return flag_mask(this, 1);
} else if (opcode == SHADER_OPCODE_FIND_LIVE_CHANNEL) {
return flag_mask(this, 32);
} else {
return flag_mask(dst, size_written);
}