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authorEric Anholt <[email protected]>2019-02-18 18:13:09 -0800
committerEric Anholt <[email protected]>2019-02-18 18:13:09 -0800
commit0bba9c8489726fa7ddb855f5ad68b1934dd0312b (patch)
tree10783dab613fb461faf54a0e1cbfd96f690709d7 /src
parent1a775d43c9360257b267d097f60fc6ef751730f2 (diff)
v3d: Emit a simpler negate for the iabs implementation.
One program affected in my shader-db. instructions in affected programs: 110 -> 108 (-1.82%)
Diffstat (limited to 'src')
-rw-r--r--src/broadcom/compiler/nir_to_vir.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/broadcom/compiler/nir_to_vir.c b/src/broadcom/compiler/nir_to_vir.c
index dc65e379b7f..4a0fd7d20e7 100644
--- a/src/broadcom/compiler/nir_to_vir.c
+++ b/src/broadcom/compiler/nir_to_vir.c
@@ -1027,8 +1027,7 @@ ntq_emit_alu(struct v3d_compile *c, nir_alu_instr *instr)
}
case nir_op_iabs:
- result = vir_MAX(c, src[0],
- vir_SUB(c, vir_uniform_ui(c, 0), src[0]));
+ result = vir_MAX(c, src[0], vir_NEG(c, src[0]));
break;
case nir_op_fddx: