diff options
Diffstat (limited to 'src/compiler/nir/nir_opt_algebraic.py')
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 3cc910a8a6..6dc19d9b12 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -604,6 +604,21 @@ for op in ['flt', 'fge', 'feq', 'fne', ('bcsel', 'a', (op, 'd', 'b'), (op, 'd', 'c'))), ] + +# For example, this converts things like +# +# 1 + mix(0, a - 1, condition) +# +# into +# +# mix(1, (a-1)+1, condition) +# +# Other optimizations will rearrange the constants. +for op in ['fadd', 'fmul', 'iadd', 'imul']: + optimizations += [ + ((op, ('bcsel(is_used_once)', a, '#b', c), '#d'), ('bcsel', a, (op, b, d), (op, c, d))) + ] + # This section contains "late" optimizations that should be run before # creating ffmas and calling regular optimizations for the final time. # Optimizations should go here if they help code generation and conflict |