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i965/fs: Remove manual unrolling of BFI instructions from the generator.

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Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Francisco Jerez 2016-05-17 20:02:29 -07:00
parent 95272f5c7e
commit 982c48dc34
1 changed files with 2 additions and 34 deletions
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36
src/mesa/drivers/dri/i965/brw_fs_generator.cpp
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@ -1841,44 +1841,12 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
case BRW_OPCODE_BFI1:
assert(devinfo->gen >= 7);
/* The Haswell WaForceSIMD8ForBFIInstruction workaround says that we
* should
*
* "Force BFI instructions to be executed always in SIMD8."
*/
if (dispatch_width == 16 && devinfo->is_haswell) {
brw_set_default_exec_size(p, BRW_EXECUTE_8);
brw_set_default_compression_control(p, BRW_COMPRESSION_NONE);
brw_BFI1(p, firsthalf(dst), firsthalf(src[0]), firsthalf(src[1]));
brw_set_default_compression_control(p, BRW_COMPRESSION_2NDHALF);
brw_BFI1(p, sechalf(dst), sechalf(src[0]), sechalf(src[1]));
brw_set_default_compression_control(p, BRW_COMPRESSION_COMPRESSED);
} else {
brw_BFI1(p, dst, src[0], src[1]);
}
brw_BFI1(p, dst, src[0], src[1]);
break;
case BRW_OPCODE_BFI2:
assert(devinfo->gen >= 7);
brw_set_default_access_mode(p, BRW_ALIGN_16);
/* The Haswell WaForceSIMD8ForBFIInstruction workaround says that we
* should
*
* "Force BFI instructions to be executed always in SIMD8."
*
* Otherwise we would be able to emit compressed instructions like we
* do for the other three-source instructions.
*/
if (dispatch_width == 16 && devinfo->is_haswell) {
brw_set_default_exec_size(p, BRW_EXECUTE_8);
brw_set_default_compression_control(p, BRW_COMPRESSION_NONE);
brw_BFI2(p, firsthalf(dst), firsthalf(src[0]), firsthalf(src[1]), firsthalf(src[2]));
brw_set_default_compression_control(p, BRW_COMPRESSION_2NDHALF);
brw_BFI2(p, sechalf(dst), sechalf(src[0]), sechalf(src[1]), sechalf(src[2]));
brw_set_default_compression_control(p, BRW_COMPRESSION_COMPRESSED);
} else {
brw_BFI2(p, dst, src[0], src[1], src[2]);
}
brw_set_default_access_mode(p, BRW_ALIGN_1);
brw_BFI2(p, dst, src[0], src[1], src[2]);
break;
case BRW_OPCODE_IF: