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pan/bi: Add a bi_op_supports_swizzle() helper

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Reviewed-by: Lorenzo Rossi <lorenzo.rossi@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40720>
This commit is contained in:
Faith Ekstrand 2026-03-30 12:40:33 -04:00 • committed by Marge Bot
parent a8879daf9c
commit 0edceaf383
2 changed files with 13 additions and 3 deletions
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13
src/panfrost/compiler/bifrost/bi_lower_swizzle.c
View file

@ -95,6 +95,15 @@ va_op_swizzles(enum bi_opcode op, unsigned src)
return swizzles;
}
bool
bi_op_supports_swizzle(enum bi_opcode op, unsigned src,
enum bi_swizzle swizzle, unsigned arch)
{
uint32_t supported_swizzles = arch >= 9 ?
va_op_swizzles(op, src) : bi_op_swizzles[op][src];
return supported_swizzles & BITFIELD_BIT(swizzle);
}
static void
lower_swizzle(bi_context *ctx, bi_instr *ins, unsigned src)
{
@ -112,9 +121,7 @@ lower_swizzle(bi_context *ctx, bi_instr *ins, unsigned src)
return;
}
uint32_t supported_swizzles = pan_arch(ctx->inputs->gpu_id) >= 9 ?
va_op_swizzles(ins->op, src) : bi_op_swizzles[ins->op][src];
if (supported_swizzles & (1 << ins->src[src].swizzle))
if (bi_op_supports_swizzle(ins->op, src, ins->src[src].swizzle, ctx->arch))
return;
/* First, try to apply a given swizzle to a constant to clear the

3
src/panfrost/compiler/bifrost/compiler.h
View file

@ -98,6 +98,9 @@ enum bi_swizzle {
BI_SWIZZLE_B33 = BI_SWIZZLE_B3333,
};
bool bi_op_supports_swizzle(enum bi_opcode op, unsigned src,
enum bi_swizzle swizzle, unsigned arch);
static inline void
bi_swizzle_to_byte_channels(enum bi_swizzle swizzle, unsigned *channels)
{