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authorEric Anholt <eric@anholt.net>2015-01-26 14:37:42 -0800
committerEric Anholt <eric@anholt.net>2015-01-29 11:43:33 -0800
commit9a3a60cb138ea9a7fb29368c8c8efe614a7d80fe (patch)
tree35eaefceb6842c67c9c63d8c93578cf73506714d
parent68d476167c0d23e3f050ce3a882fc7b741c18d09 (diff)
nir: Don't try to to-SSA ALU instructions that are already SSA.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
-rw-r--r--src/glsl/nir/nir_to_ssa.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_to_ssa.c b/src/glsl/nir/nir_to_ssa.c
index 9c577fa992..dbe1699c54 100644
--- a/src/glsl/nir/nir_to_ssa.c
+++ b/src/glsl/nir/nir_to_ssa.c
@@ -239,6 +239,9 @@ rewrite_alu_instr_forward(nir_alu_instr *instr, rewrite_state *state)
nir_foreach_src(&instr->instr, rewrite_use, state);
+ if (instr->dest.dest.is_ssa)
+ return;
+
nir_register *reg = instr->dest.dest.reg.reg;
unsigned index = reg->index;