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pan/bi: Use bi_apply_swizzle in constant folding

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Much more legible now.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12026>
This commit is contained in:
Alyssa Rosenzweig 2021-07-26 11:14:33 -04:00 • committed by Marge Bot
parent ce8e269e60
commit 972d517d41
1 changed files with 4 additions and 22 deletions
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26
src/panfrost/bifrost/bi_opt_constant_fold.c
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@ -31,33 +31,15 @@
static uint32_t
bi_fold_constant(bi_instr *I, bool *unsupported)
{
uint32_t a = I->src[0].value;
uint32_t b = I->src[1].value;
uint32_t a = bi_apply_swizzle(I->src[0].value, I->src[0].swizzle);
uint32_t b = bi_apply_swizzle(I->src[1].value, I->src[1].swizzle);
switch (I->op) {
case BI_OPCODE_SWZ_V2I16:
{
uint16_t lo = (a & 0xFFFF);
uint16_t hi = (a >> 16);
enum bi_swizzle swz = I->src[0].swizzle;
assert(swz < BI_SWIZZLE_H11);
/* Note order is H00, H01, H10, H11 */
return (((swz & (1 << 1)) ? hi : lo) << 0) |
(((swz & (1 << 0)) ? hi : lo) << 16);
}
return a;
case BI_OPCODE_MKVEC_V2I16:
{
bool hi_a = I->src[0].swizzle & BI_SWIZZLE_H11;
bool hi_b = I->src[1].swizzle & BI_SWIZZLE_H11;
uint16_t lo = (hi_a ? (a >> 16) : (a & 0xFFFF));
uint16_t hi = (hi_b ? (b >> 16) : (b & 0xFFFF));
return (hi << 16) | lo;
}
return (b << 16) | (a & 0xFFFF);
default:
*unsupported = true;