Ian Romanick 21223acf7d intel/fs: Fix D to W conversion in opt_combine_constants
Found by GCC warning:

src/intel/compiler/brw_fs_combine_constants.cpp: In function ‘bool needs_negate(const fs_reg*, const imm*)’:
src/intel/compiler/brw_fs_combine_constants.cpp:306:34: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
       return ((reg->d & 0xffffu) < 0) != (imm->w < 0);
               ~~~~~~~~~~~~~~~~~~~^~~

The result of the bit-and is a 32-bit value with the top bits all zero.
This will never be < 0.  Instead of masking off the bits, just cast to
int16_t and let the compiler handle the actual conversion.

Fixes: e64be391dd ("intel/compiler: generalize the combine constants pass")
Cc: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2019-04-23 19:48:33 -07:00
2019-04-15 13:44:41 -07:00
2019-04-21 01:05:19 +00:00
2019-04-11 09:57:53 +08:00
2019-04-15 13:44:34 -07:00
2018-08-16 13:52:56 -07:00
2019-01-29 15:30:25 -08:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
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