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nir: Add lrp lowering for doubles in opt_algebraic

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Some hardware (i965 on Broadwell generation, for example) does not support
natively the execution of lrp instruction with double arguments.

Add 'lower_flrp64' flag to lower this instruction in that case.

v2:
   - Rename lower_flrp_double to lower_flrp64 (Jason)
   - Fix typo (Jason)
   - Adapt the code to define bit_size information in the opcodes.

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Samuel Iglesias Gonsálvez
2016-04-26 09:35:30 +02:00
parent 443600d51e
commit db07b46f2c
2 changed files with 8 additions and 3 deletions
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src/compiler/nir/nir.h
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@@ -1625,6 +1625,8 @@ typedef struct nir_shader_compiler_options {
bool lower_fdiv;
bool lower_ffma;
bool lower_flrp32;
/** Lowers flrp when it does not support doubles */
bool lower_flrp64;
bool lower_fpow;
bool lower_fsat;
bool lower_fsqrt;