diff options
| author | Eric Anholt <[email protected]> | 2018-05-04 13:33:47 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2018-06-06 13:44:28 -0700 |
| commit | d4c7c3c225b7c34669498c15c2d3186cf6a4647e (patch) | |
| tree | 4e8b71ad3e41a486ec8533c95260022df422aca4 /src/compiler/nir/nir.h | |
| parent | af88acf4c4e2e14161872752fb9fb4683f9c8845 (diff) | |
nir: Add lowering for ifind_msb to ufind_msb.
ufind_msb is easily expressed in terms of clz, and we can reduce ifind_msb
to that.
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Ian Romanick <[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 519c0198879..9fca61f0070 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -1913,6 +1913,8 @@ typedef struct nir_shader_compiler_options { bool lower_bitfield_insert_to_shifts; /** Lowers bfm to shifts and subtracts. */ bool lower_bfm; + /** Lowers ifind_msb to compare and ufind_msb */ + bool lower_ifind_msb; bool lower_uadd_carry; bool lower_usub_borrow; /** lowers fneg and ineg to fsub and isub. */ |