[Mesa-dev] [PATCH] nir: add support for structured COME FROM

[Connor Abbott]

Unfortunately, we can't support unstructured COME FROM yet, since we
can't structurize arbitrary control flow graphs. Also TODO is adding
support for threading by having multiple come_from's point to the same
unconditional branch, as well as various other INTERCAL features.

Signed-off-by: Connor Abbott <cwabbott0 at gmail.com>
---
 src/glsl/nir/nir_print.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/glsl/nir/nir_print.c b/src/glsl/nir/nir_print.c
index fa11a31..2086e21 100644
--- a/src/glsl/nir/nir_print.c
+++ b/src/glsl/nir/nir_print.c
@@ -655,12 +655,10 @@ print_block(nir_block *block, print_var_state *state, unsigned tabs, FILE *fp)
    qsort(preds, block->predecessors->entries, sizeof(nir_block *),
          compare_block_index);
 
-   print_tabs(tabs, fp);
-   fprintf(fp, "/* preds: ");
    for (unsigned i = 0; i < block->predecessors->entries; i++) {
-      fprintf(fp, "block_%u ", preds[i]->index);
+      print_tabs(tabs, fp);
+      fprintf(fp, "come_from %u\n", preds[i]->index);
    }
-   fprintf(fp, "*/\n");
 
    free(preds);
 
-- 
2.1.0