diff options
| author | Connor Abbott <[email protected]> | 2014-09-05 20:59:31 -0400 |
|---|---|---|
| committer | Andreas Boll <[email protected]> | 2014-09-12 16:07:47 +0200 |
| commit | ec046bc08ef8ccf69e867635c7d1e2e032acce36 (patch) | |
| tree | e550bc4f0dc0fe7d0faad9d51c36f815662a410b | |
| parent | afd82dcad127b64381ca6d80d0e499368074f474 (diff) | |
ra: note a restriction in the interfence graph API
As noted in the previous commit, this was introduced in
567e2769b81863b6dffdac3826a6b729ce6ea37c ("ra: make the p, q test more
efficient"), but I forgot to mention it.
Signed-off-by: Connor Abbott <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
| -rw-r--r-- | src/mesa/program/register_allocate.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/program/register_allocate.h b/src/mesa/program/register_allocate.h index bfc9190dcbe..dc687449532 100644 --- a/src/mesa/program/register_allocate.h +++ b/src/mesa/program/register_allocate.h @@ -56,7 +56,10 @@ void ra_set_finalize(struct ra_regs *regs, unsigned int **conflicts); * Each interference graph node is a virtual variable in the IL. It * is up to the user to ra_set_node_class() for the virtual variable, * and compute live ranges and ra_node_interfere() between conflicting - * live ranges. + * live ranges. Note that an interference *must not* be added between + * two nodes if their classes haven't been assigned yet. The user + * should set the class of each node before building the interference + * graph. */ struct ra_graph *ra_alloc_interference_graph(struct ra_regs *regs, unsigned int count); |