diff options
| author | Dave Airlie <[email protected]> | 2016-11-02 01:22:07 +0000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2016-11-10 05:46:33 +1000 |
| commit | b16dff2d88302e5113598a818d2f92f8af02cd79 (patch) | |
| tree | ce7db783f52eb317f4a7ffea690e51c4a6c31a1c /src/compiler/nir/nir.h | |
| parent | dd77faeca2819fc78a72f71ca9b996c209378cde (diff) | |
nir: add conditional discard optimisation (v4)
This is ported from GLSL and converts
if (cond)
discard;
into
discard_if(cond);
This removes a block, but also is needed by radv
to workaround a bug in the LLVM backend.
v2: handle if (a) discard_if(b) (nha)
cleanup and drop pointless loop (Matt)
make sure there are no dependent phis (Eric)
v3: make sure only one instruction in the then block.
v4: remove sneaky tabs, add cursor init (Eric)
Reviewed-by: Eric Anholt <[email protected]>
Cc: "13.0" <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src/compiler/nir/nir.h')
| -rw-r--r-- | src/compiler/nir/nir.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index 92647632462..2a7713934bc 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -2531,6 +2531,8 @@ bool nir_opt_remove_phis(nir_shader *shader); bool nir_opt_undef(nir_shader *shader); +bool nir_opt_conditional_discard(nir_shader *shader); + void nir_sweep(nir_shader *shader); nir_intrinsic_op nir_intrinsic_from_system_value(gl_system_value val); |