diff options
Diffstat (limited to 'src/compiler/nir/nir_opt_algebraic.py')
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index a3a244c41fb..bf5c69314c5 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -225,6 +225,11 @@ optimizations = [ # a * (#b << #c) (('ishl', ('imul', a, '#b'), '#c'), ('imul', a, ('ishl', b, c))), + # This is common for address calculations. Reassociating may enable the + # 'a<<c' to be CSE'd. It also helps architectures that have an ISHLADD + # instruction or a constant offset field for in load / store instructions. + (('ishl', ('iadd', a, '#b'), '#c'), ('iadd', ('ishl', a, c), ('ishl', b, c))), + # Comparison simplifications (('~inot', ('flt', a, b)), ('fge', a, b)), (('~inot', ('fge', a, b)), ('flt', a, b)), |