Mesa (master): pan/midgard: Allow non-contiguous masks in UBO lowering
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Wed Oct 16 01:41:56 UTC 2019
Module: Mesa
Branch: master
Commit: 9c0915ba4ac3c813056124ca59c87be9c89ef1c6
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=9c0915ba4ac3c813056124ca59c87be9c89ef1c6
Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date: Tue Oct 15 15:56:15 2019 -0400
pan/midgard: Allow non-contiguous masks in UBO lowering
We don't really need to impose this condition, but we do need to cope
with the slightly more general case.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
---
src/panfrost/midgard/mir_promote_uniforms.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/src/panfrost/midgard/mir_promote_uniforms.c b/src/panfrost/midgard/mir_promote_uniforms.c
index 428710e5154..5e31cb446bb 100644
--- a/src/panfrost/midgard/mir_promote_uniforms.c
+++ b/src/panfrost/midgard/mir_promote_uniforms.c
@@ -87,18 +87,13 @@ midgard_promote_uniforms(compiler_context *ctx, unsigned promoted_count)
bool needs_move = ins->dest & IS_REG;
needs_move |= mir_special_index(ctx, ins->dest);
- /* Ensure this is a contiguous X-bound mask. It should be since
- * we haven't done RA and per-component masked UBO reads don't
- * make much sense. */
-
- assert(((ins->mask + 1) & ins->mask) == 0);
-
/* Check the component count from the mask so we can setup a
* swizzle appropriately when promoting. The idea is to ensure
* the component count is preserved so RA can be smarter if we
* need to spill */
- unsigned nr_components = util_bitcount(ins->mask);
+ unsigned mask = ins->mask;
+ unsigned nr_components = sizeof(mask)*8 - __builtin_clz(mask);
if (needs_move) {
midgard_instruction mov = v_mov(promoted, blank_alu_src, ins->dest);
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