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agx: Add predecessor index helper

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To order phi sources.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16268>
This commit is contained in:
Alyssa Rosenzweig
2022-04-12 23:10:47 -04:00
parent 3f1e926bf4
commit 5be26e8624
1 changed files with 17 additions and 0 deletions
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17
src/asahi/compiler/agx_compiler.h
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@@ -548,6 +548,23 @@ agx_vec_for_intr(agx_context *ctx, nir_intrinsic_instr *instr)
#define agx_foreach_dest(ins, v) \ #define agx_foreach_dest(ins, v) \
for (unsigned v = 0; v < ARRAY_SIZE(ins->dest); ++v) for (unsigned v = 0; v < ARRAY_SIZE(ins->dest); ++v)
/*
* Find the index of a predecessor, used as the implicit order of phi sources.
*/
static inline unsigned
agx_predecessor_index(agx_block *succ, agx_block *pred)
{
unsigned index = 0;
agx_foreach_predecessor(succ, x) {
if (*x == pred) return index;
index++;
}
unreachable("Invalid predecessor");
}
static inline agx_instr * static inline agx_instr *
agx_prev_op(agx_instr *ins) agx_prev_op(agx_instr *ins)
{ {