diff options
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c index 3f14412998c..245b61f31e5 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c @@ -1661,6 +1661,16 @@ resolve_phis(struct ir3_compile *ctx, struct ir3_block *block) foreach_list_typed(nir_phi_src, nsrc, node, &nphi->srcs) { struct ir3_instruction *src = get_src(ctx, &nsrc->src)[0]; + + /* NOTE: src might not be in the same block as it comes from + * according to the phi.. but in the end the backend assumes + * it will be able to assign the same register to each (which + * only works if it is assigned in the src block), so insert + * an extra mov to make sure the phi src is assigned in the + * block it comes from: + */ + src = ir3_MOV(get_block(ctx, nsrc->pred), src, TYPE_U32); + ir3_reg_create(instr, 0, IR3_REG_SSA)->instr = src; } } |