diff options
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_opt_algebraic.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/gallium/drivers/vc4/vc4_opt_algebraic.c b/src/gallium/drivers/vc4/vc4_opt_algebraic.c index c1144583f63..ec526fb3d18 100644 --- a/src/gallium/drivers/vc4/vc4_opt_algebraic.c +++ b/src/gallium/drivers/vc4/vc4_opt_algebraic.c @@ -174,7 +174,10 @@ qir_opt_algebraic(struct vc4_compile *c) */ replace_with_mov(c, inst, inst->src[1]); progress = true; - } else if (is_zero(c, defs, inst->src[1])) { + break; + } + + if (is_zero(c, defs, inst->src[1])) { /* Replace references to a 0 uniform value * with the SEL_X_0 equivalent. */ @@ -183,7 +186,26 @@ qir_opt_algebraic(struct vc4_compile *c) inst->src[1] = c->undef; progress = true; dump_to(c, inst); + break; } + + if (is_zero(c, defs, inst->src[0])) { + /* Replace references to a 0 uniform value + * with the SEL_X_0 equivalent, flipping the + * condition being evaluated since the operand + * order is flipped. + */ + dump_from(c, inst); + inst->op -= QOP_SEL_X_Y_ZS; + inst->op ^= 1; + inst->op += QOP_SEL_X_0_ZS; + inst->src[0] = inst->src[1]; + inst->src[1] = c->undef; + progress = true; + dump_to(c, inst); + break; + } + break; case QOP_FSUB: |