diff options
| author | Neil Roberts <[email protected]> | 2015-04-10 17:20:21 +0100 |
|---|---|---|
| committer | Neil Roberts <[email protected]> | 2015-04-14 19:20:28 +0100 |
| commit | 07c571a39fa12c3db1c638302de7aed67844609b (patch) | |
| tree | f2082475e4e904fba0ee8fd57627d5fa43d27b06 | |
| parent | 05a1d84491eabf56564488ba0b0b0b8e91fd4309 (diff) | |
i965/skl: Use an exec size of 8 to initialise the message header
Commit e93566a15c61c33faa changed the message header code needed to
make Skylake use SIMD4x2 so that it uses a register with width 4
instead of 8 as the source register in the send message. However it
also changed the width for the dest in the MOV instruction which is
used to initialise the header register with the values from g0. The
width of the destination is used to determine the exec size in
brw_set_dest so this would end up making the MOV have an exec size of
4. I think this would end up leaving the top half of the register
uninitialised. The top half of the header has meaningful values so
this probably isn't a good idea.
This patch just casts the dest register for the MOV instruction back
to a vec8 to fix it. It doesn't cause any changes to a Piglit run.
Reviewed-by: Ben Widawsky <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 2 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_generator.cpp | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp index 2743297b053..7c000206d09 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp @@ -1046,7 +1046,7 @@ fs_generator::generate_uniform_pull_constant_load_gen7(fs_inst *inst, brw_push_insn_state(p); brw_set_default_mask_control(p, BRW_MASK_DISABLE); - brw_MOV(p, src, retype(brw_vec4_grf(0, 0), BRW_REGISTER_TYPE_UD)); + brw_MOV(p, vec8(src), retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UD)); brw_set_default_access_mode(p, BRW_ALIGN_1); brw_MOV(p, get_element_ud(src, 2), diff --git a/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp b/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp index 9714785a48e..e4addf7d2fd 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_generator.cpp @@ -1051,7 +1051,7 @@ vec4_generator::generate_pull_constant_load_gen7(vec4_instruction *inst, brw_push_insn_state(p); brw_set_default_mask_control(p, BRW_MASK_DISABLE); - brw_MOV(p, src, retype(brw_vec4_grf(0, 0), BRW_REGISTER_TYPE_UD)); + brw_MOV(p, vec8(src), retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UD)); brw_set_default_access_mode(p, BRW_ALIGN_1); brw_MOV(p, get_element_ud(src, 2), |