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| author | Jason Ekstrand <jason.ekstrand@intel.com> | 2017-10-17 19:50:36 -0700 |
|---|---|---|
| committer | Andres Gomez <agomez@igalia.com> | 2017-11-21 18:16:44 +0200 |
| commit | 73342c304d608e1a0180d19c5de50b177e27bdf7 (patch) | |
| tree | 718587dd1cd2aa24955d80292be23aef96c4ff4c | |
| parent | 00ccd7856e5c3640e2a496a36b4094d1ae893fb6 (diff) | |
| download | mesa-73342c304d608e1a0180d19c5de50b177e27bdf7.tar.gz | |
intel/eu/reg: Add a subscript() helper
This is similar to the identically named fs_reg helper.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 10e4feed39120072f38274b95e884422f72f360f)
| -rw-r--r-- | src/intel/compiler/brw_reg.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/intel/compiler/brw_reg.h b/src/intel/compiler/brw_reg.h index 17a51fbd655..917f37147f1 100644 --- a/src/intel/compiler/brw_reg.h +++ b/src/intel/compiler/brw_reg.h @@ -945,6 +945,22 @@ spread(struct brw_reg reg, unsigned s) } } +/** + * Reinterpret each channel of register \p reg as a vector of values of the + * given smaller type and take the i-th subcomponent from each. + */ +static inline struct brw_reg +subscript(struct brw_reg reg, enum brw_reg_type type, unsigned i) +{ + if (reg.file == IMM) + return reg; + + unsigned scale = type_sz(reg.type) / type_sz(type); + assert(scale >= 1 && i < scale); + + return suboffset(retype(spread(reg, scale), type), i); +} + static inline struct brw_reg vec16(struct brw_reg reg) { |