diff options
| author | Iago Toral Quiroga <[email protected]> | 2018-10-26 13:40:27 +0200 |
|---|---|---|
| committer | Juan A. Suarez Romero <[email protected]> | 2019-04-18 11:05:18 +0200 |
| commit | 44e1affaec3477d52c56cd2a10b20af48ae39854 (patch) | |
| tree | 3e5d1690986a9dd55082e2cf11988544a730bb8a /src/intel | |
| parent | e64be391dd065b6a0eabee17ada038db7a28c112 (diff) | |
intel/compiler: implement is_zero, is_one, is_negative_one for 8-bit/16-bit
There are no 8-bit immediates, so assert in that case.
16-bit immediates are replicated in each word of a 32-bit immediate, so
we only need to check the lower 16-bits.
v2:
- Fix is_zero with half-float to consider -0 as well (Jason).
- Fix is_negative_one for word type.
Reviewed-by: Jason Ekstrand <[email protected]>
Diffstat (limited to 'src/intel')
| -rw-r--r-- | src/intel/compiler/brw_shader.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/intel/compiler/brw_shader.cpp b/src/intel/compiler/brw_shader.cpp index 06f613cf6b5..f7ed108bd07 100644 --- a/src/intel/compiler/brw_shader.cpp +++ b/src/intel/compiler/brw_shader.cpp @@ -713,11 +713,20 @@ backend_reg::is_zero() const if (file != IMM) return false; + assert(type_sz(type) > 1); + switch (type) { + case BRW_REGISTER_TYPE_HF: + assert((d & 0xffff) == ((d >> 16) & 0xffff)); + return (d & 0xffff) == 0 || (d & 0xffff) == 0x8000; case BRW_REGISTER_TYPE_F: return f == 0; case BRW_REGISTER_TYPE_DF: return df == 0; + case BRW_REGISTER_TYPE_W: + case BRW_REGISTER_TYPE_UW: + assert((d & 0xffff) == ((d >> 16) & 0xffff)); + return (d & 0xffff) == 0; case BRW_REGISTER_TYPE_D: case BRW_REGISTER_TYPE_UD: return d == 0; @@ -735,11 +744,20 @@ backend_reg::is_one() const if (file != IMM) return false; + assert(type_sz(type) > 1); + switch (type) { + case BRW_REGISTER_TYPE_HF: + assert((d & 0xffff) == ((d >> 16) & 0xffff)); + return (d & 0xffff) == 0x3c00; case BRW_REGISTER_TYPE_F: return f == 1.0f; case BRW_REGISTER_TYPE_DF: return df == 1.0; + case BRW_REGISTER_TYPE_W: + case BRW_REGISTER_TYPE_UW: + assert((d & 0xffff) == ((d >> 16) & 0xffff)); + return (d & 0xffff) == 1; case BRW_REGISTER_TYPE_D: case BRW_REGISTER_TYPE_UD: return d == 1; @@ -757,11 +775,19 @@ backend_reg::is_negative_one() const if (file != IMM) return false; + assert(type_sz(type) > 1); + switch (type) { + case BRW_REGISTER_TYPE_HF: + assert((d & 0xffff) == ((d >> 16) & 0xffff)); + return (d & 0xffff) == 0xbc00; case BRW_REGISTER_TYPE_F: return f == -1.0; case BRW_REGISTER_TYPE_DF: return df == -1.0; + case BRW_REGISTER_TYPE_W: + assert((d & 0xffff) == ((d >> 16) & 0xffff)); + return (d & 0xffff) == 0xffff; case BRW_REGISTER_TYPE_D: return d == -1; case BRW_REGISTER_TYPE_Q: |