mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
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fd957b1751
This tries to move comparisons (a common source of boolean values)
closer to their first use. For GPUs which use condition codes,
this can eliminate a lot of temporary booleans and comparisons
which reload the condition code register based on a boolean.
V2: (Timothy Arceri)
- fix move comparision for phis so we dont end up with:
vec1 32 ssa_227 = phi block_34: ssa_1, block_38: ssa_240
vec1 32 ssa_235 = feq ssa_227, ssa_1
vec1 32 ssa_230 = phi block_34: ssa_221, block_38: ssa_235
- add nir_op_i2b/nir_op_f2b to the list of comparisons.
V3: (Timothy Arceri)
- tidy up suggested by Jason.
- add inot/fnot to move comparison list
V4: (Jason Ekstrand)
- clean up move_comparison_source
- get rid of the tuple
- rework phi handling
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> [v1]
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
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| .. | ||
| glsl | ||
| nir | ||
| spirv | ||
| .gitignore | ||
| Android.glsl.gen.mk | ||
| Android.glsl.mk | ||
| Android.mk | ||
| Android.nir.gen.mk | ||
| Android.nir.mk | ||
| builtin_type_macros.h | ||
| glsl_types.cpp | ||
| glsl_types.h | ||
| Makefile.am | ||
| Makefile.glsl.am | ||
| Makefile.nir.am | ||
| Makefile.sources | ||
| nir_types.cpp | ||
| nir_types.h | ||
| SConscript | ||
| SConscript.glsl | ||
| SConscript.nir | ||
| shader_enums.c | ||
| shader_enums.h | ||
| shader_info.h | ||