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Add RegUse_ support to the lua metaprogram. Ideated further on type mapping atom comonents to their base component op (math distinctions annotated in the asm).

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ed
2026-08-15 15:51:06 -04:00
parent f8b28be02e
commit 8a825a59c7
13 changed files with 551 additions and 317 deletions
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code/duffle/gte.atom.c
+8 -8
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@@ -150,8 +150,8 @@ MipsAtomComp_Proc_(ab, {
gte_mv_to_data_r(to_ir1, C2_IR1), /* IR1 = src.x (preserved in r_tmp — r_mac2_scratch was clobbered to MAC2 in stage 1.5) */
gte_mv_to_data_r(to_ir2, C2_IR2),
gte_mv_to_data_r(to_ir3, C2_IR3), /* IR3 = src.z (reloaded) */
LdSlot_ nop_slot1,
LdSlot_ nop_slot2,
DmaSlot_ nop_slot1,
DmaSlot_ nop_slot2,
gte_cmdw_gpf,
gte_mv_from_data_r(fr_mac1, C2_MAC1),
gte_mv_from_data_r(fr_mac2, C2_MAC2),
@@ -284,7 +284,7 @@ MipsAtom_Proc_(aa, {
/* Load src.x/y/z from r_src_ptr (caller-determined address) into r_tmp/r_recip_est/r_branch_tmp.
* r.rt1_src_x holds src.x throughout stages 1-2 — r_mac2_scratch is clobbered to MAC2 in stage 1.5 (line below). */
mac_load_v3s4(r.src_x, r.recip_est, r.t5.src_z, r.src_ptr, 0),
mac_load_word_v3(r.src_x, r.recip_est, r.t5.src_z, r.src_ptr, 0),
/* Stage 1: mtc2 src → IR1/2/3, SQR fires. */
LdSlot_ mac_gte_sqr_v3s4(r.src_x, r.recip_est, r.t5.src_z, LdSlot_ nop),
@@ -293,8 +293,8 @@ MipsAtom_Proc_(aa, {
mac_gte_mv_from_data_r_mac123(r.t3.mac1_scratch, r.t4.mac2_scratch, r.norm), LdSlot_ nop,
add_u_self( r.norm, r.t3.mac1_scratch),
add_u_self( r.norm, r.t4.mac2_scratch),
gte_mv_to_data_r( r.norm, C2_LZCS), LdSlot_ nop2,
gte_mv_from_data_r(r.shift, C2_LZCR), LdSlot_ nop,
gte_mv_to_data_r( r.norm, C2_LZCS), DmaSlot_ nop2,
gte_mv_from_data_r(r.shift, C2_LZCR), DmaSlot_ nop,
/* Stage 3: round LZCR to even, compute half-shift, align |v|² to bit 24.
* r_norm holds |v|² sum; r_shift holds the LZCR count from mfc2.
@@ -328,13 +328,13 @@ MipsAtom_Proc_(aa, {
r.recip_est,
r.t5.src_z, /* IR3 = src.z (reloaded) */
r.t4.mac2_scratch, r.recip_est, r.t5.src_z,
LdSlot_ add_si(r.dst_ptr, r.scratch, dst_offset), // pre-laoding destination to register here.
LdSlot_ nop
DmaSlot_ add_si(r.dst_ptr, r.scratch, dst_offset), // pre-laoding destination to register here.
DmaSlot_ nop
),
/* sra by r_shift = (31-LZCR)/2 (saved before sqrtbl lookup) */
mac_shift_aright_var_v3_self(r.t4.mac2_scratch, r.recip_est, r.t5.src_z, r.shift),
/* Store result.x/y/z to r_dst_ptr (caller-determined dst address). */
mac_store_v3s4(r.t4.mac2_scratch, r.recip_est, r.t5.src_z, r.dst_ptr, 0),
mac_store_word_v3(r.t4.mac2_scratch, r.recip_est, r.t5.src_z, r.dst_ptr, 0),
mac_yield()
})