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author | Ben Widawsky <[email protected]> | 2015-03-31 15:49:42 -0700 |
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committer | Ben Widawsky <[email protected]> | 2015-04-14 15:22:47 -0700 |
commit | 38707e1478a4b6f4687c583d06fbd68e22900735 (patch) | |
tree | ddd62abb9144b5c6119dd7adedc925ce5a74aa20 /doxygen/README | |
parent | 28d9e90428282a5e0a6aa31ad858a5cf514d1264 (diff) |
i965/fs: Create a has_side_effects for fs_inst
When an instruction has a side effect, it impacts the available options when
reordering an instruction. As the EOT flag is an implied write to the render
target in the FS, it can be considered a side effect.
This patch shouldn't actually have any impact on the current code since the EOT
flag implies that the opcode is already one with side effects,
FS_OPCODE_FB_WRITE. The next patch however will introduce an optimization
whereby the EOT flag can occur with an opcode SHADER_OPCODE_TEX, and as that
instruction will perform the same implied write to the render target, it cannot
be reordered.
v2: Remove extra whitespace (Matt)
Signed-off-by: Ben Widawsky <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'doxygen/README')
0 files changed, 0 insertions, 0 deletions