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i965/fs: Emit compressed BFI2 instructions on Gen > 7.

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IVB had a restriction that prevented us from emitting compressed
three-source instructions, and although that was lifted on Haswell,
Haswell had a new restriction that said BFI instructions specifically
couldn't be compressed.
This commit is contained in:
Matt Turner 2014-09-30 15:06:23 -07:00
parent 9f5e5bd34d
commit 3e7f8005db
1 changed files with 1 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_fs_generator.cpp
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@ -1729,7 +1729,7 @@ fs_generator::generate_code(const cfg_t *cfg)
* Otherwise we would be able to emit compressed instructions like we
* do for the other three-source instructions.
*/
if (dispatch_width == 16) {
if (dispatch_width == 16 && brw->gen < 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);