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broadcom/compiler: define max number of tmu spills for compile strategies

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Instead of whether they are allowed to spill or not. This is more flexible.
Also, while we are not currently enabling spilling on any 4-thread strategies,
should we do that in the future, always prefer a 4-thread compile.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15041>
This commit is contained in:
Iago Toral Quiroga
2022-02-04 13:40:50 +01:00
committed by Marge Bot
parent 919aedbfec
commit 40e091267d
4 changed files with 28 additions and 28 deletions
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11
src/broadcom/compiler/vir_register_allocate.c
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@@ -561,15 +561,10 @@ get_spill_batch_size(struct v3d_compile *c)
return 20;
}
/* Don't emit spills using the TMU until we've dropped thread count first. We,
* may also disable spilling when certain optimizations that are known to
* increase register pressure are active so we favor recompiling with
* optimizations disabled instead of spilling.
*/
static inline bool
tmu_spilling_allowed(struct v3d_compile *c, int thread_index)
tmu_spilling_allowed(struct v3d_compile *c)
{
return thread_index == 0 && c->tmu_spilling_allowed;
return c->spills + c->fills < c->max_tmu_spills;
}
#define CLASS_BIT_PHYS (1 << 0)
@@ -818,7 +813,7 @@ v3d_register_allocate(struct v3d_compile *c, bool *spilled)
if (i > 0 && !is_uniform)
break;
if (is_uniform || tmu_spilling_allowed(c, thread_index)) {
if (is_uniform || tmu_spilling_allowed(c)) {
v3d_spill_reg(c, map[node].temp);
/* Ask the outer loop to call back in. */