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| author | Andreas Baierl <ichgeh@imkreisrum.de> | 2019-08-20 18:19:55 +0200 |
|---|---|---|
| committer | Erico Nunes <nunes.erico@gmail.com> | 2019-09-13 19:41:32 +0000 |
| commit | 4b1a14fd47134a3810f9c15d137af4336819e081 (patch) | |
| tree | ced29cf75960988fe2a6563bd1745ead25ec0dc7 /src/gallium/drivers/lima/ir/pp/node_to_instr.c | |
| parent | 4ddadd63709769ff923687b4232e870f6fbcb8a8 (diff) | |
| download | mesa-4b1a14fd47134a3810f9c15d137af4336819e081.tar.gz | |
lima/ppir: Add undef handling
Add a ppir dummy node for nir_ssa_undef_instr, create a reg for it and mark
it as undefined, so that regalloc can set it non-interfering to avoid
register pressure.
Signed-off-by: Andreas Baierl <ichgeh@imkreisrum.de>
Reviewed-by: Vasily Khozuzhick <anarsoul@gmail.com>
Reviewed-by: Erico Nunes <nunes.erico@gmail.com>
Diffstat (limited to 'src/gallium/drivers/lima/ir/pp/node_to_instr.c')
| -rw-r--r-- | src/gallium/drivers/lima/ir/pp/node_to_instr.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gallium/drivers/lima/ir/pp/node_to_instr.c b/src/gallium/drivers/lima/ir/pp/node_to_instr.c index 5bc8d29c469..aa9011dc3c4 100644 --- a/src/gallium/drivers/lima/ir/pp/node_to_instr.c +++ b/src/gallium/drivers/lima/ir/pp/node_to_instr.c @@ -66,6 +66,10 @@ static bool ppir_do_one_node_to_instr(ppir_block *block, ppir_node *node, ppir_n switch (node->type) { case ppir_node_type_alu: { + /* don't create an instr for undef node */ + if (node->op == ppir_op_undef) + break; + /* merge pred mul and succ add in the same instr can save a reg * by using pipeline reg ^vmul/^fmul */ ppir_alu_node *alu = ppir_node_to_alu(node); |