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-rw-r--r--src/gallium/drivers/nv50/nv50_program.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/src/gallium/drivers/nv50/nv50_program.c b/src/gallium/drivers/nv50/nv50_program.c
index 855079f293..f93c864c2a 100644
--- a/src/gallium/drivers/nv50/nv50_program.c
+++ b/src/gallium/drivers/nv50/nv50_program.c
@@ -1440,19 +1440,25 @@ emit_ddx(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
static void
emit_ddy(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
{
+ struct nv50_reg *r = src;
struct nv50_program_exec *e = exec(pc);
assert(src->type == P_TEMP);
- if (!(src->mod & NV50_MOD_NEG)) /* ! double negation */
- emit_neg(pc, src, src);
+ if (!(src->mod & NV50_MOD_NEG)) { /* ! double negation */
+ r = alloc_temp(pc, NULL);
+ emit_neg(pc, r, src);
+ }
e->inst[0] = 0xc0150000;
e->inst[1] = 0x8a400000;
set_long(pc, e);
set_dst(pc, dst, e);
- set_src_0(pc, src, e);
- set_src_2(pc, src, e);
+ set_src_0(pc, r, e);
+ set_src_2(pc, r, e);
+
+ if (r != src)
+ free_temp(pc, r);
emit(pc, e);
}