From: Jason Ekstrand <jason.ekstrand@intel.com>
Date: Wed, 23 Mar 2016 21:25:56 +0000 (-0700)
Subject: nir/algebraic: Get rid of an invlid fxor optimization
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=89545b13141053cf12a10e5357aa82031e8419ed;p=mesa.git

nir/algebraic: Get rid of an invlid fxor optimization

The fxor opcode is required to return 1.0f or 0.0f but the input variable
may not be 1.0f or 0.0f.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
---

diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index d788b7b1a0c..ec6c6338bb1 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -176,7 +176,6 @@ optimizations = [
    (('ior', a, 0), a),
    (('fxor', a, a), 0.0),
    (('ixor', a, a), 0),
-   (('fxor', a, 0.0), a),
    (('ixor', a, 0), a),
    (('inot', ('inot', a)), a),
    # DeMorgan's Laws