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Ideating on "RegUse_" patterned structs for describe register allocatins to mips atom proc.

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ed
2026-08-14 12:38:00 -04:00
parent b695056b9a
commit baaff12f33
3 changed files with 92 additions and 109 deletions
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code/hello_camera/hello_camera.c
+43 -63
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@@ -150,19 +150,6 @@ internal void resolve_look_at_init(void) {
U4 pin_mask = regfile_abi_mask | (1 << R_ResolveScratch);
RegFile rf = regfile(pin_mask);
// defer(regfile_reset_mask(& rf, pin_mask)) {
// U4 r_target_ptr = regfile_alloc(& rf);
// U4 r_eye_ptr = regfile_alloc(& rf);
// U4 r_up_in_ptr = regfile_alloc(& rf);
// U4 r_tmp0 = regfile_alloc(& rf);
// U4 r_tmp1 = regfile_alloc(& rf);
// U4 r_tmp2 = regfile_alloc(& rf);
// U4 r_tmp3 = regfile_alloc(& rf);
// tb_emit_(resolve_look_at__input_and_sub_proc(& ab,
// R_ResolveScratch,
// r_target_ptr, r_eye_ptr, r_up_in_ptr,
// r_tmp0, r_tmp1, r_tmp2, r_tmp3));
// }
U4 r_target_ptr = regfile_alloc(& rf);
U4 r_eye_ptr = regfile_alloc(& rf);
U4 r_up_in_ptr = regfile_alloc(& rf);
@@ -176,25 +163,21 @@ internal void resolve_look_at_init(void) {
r_tmp0, r_tmp1, r_tmp2, r_tmp3);
/* === ATOM 1: normalize fwd→uz === */
U4 r_src_offset = O_(ResolveLookAtScratch, fwd);
U4 r_dst_offset = O_(ResolveLookAtScratch, uz);
U4 r_src_ptr = R_T0;
U4 r_dst_ptr = R_T1;
U4 r_tmp = R_T2;
U4 r_mac1 = R_T3;
U4 r_mac2 = R_T5;
U4 r_recip = R_T6;
U4 r_norm = R_T7;
U4 r_shift = R_V0;
U4 r_branch = R_V1;
// tb_emit_(
U2 src_offset = O_(ResolveLookAtScratch, fwd);
U2 dst_offset = O_(ResolveLookAtScratch, uz);
smem.resolve_look_at_atom_addrs[1] = normalize_v3s4_proc(& ab,
R_ResolveScratch,
r_src_offset, r_dst_offset,
r_src_ptr, r_dst_ptr, r_tmp,
r_mac1, r_mac2, r_recip, r_norm,
r_shift, r_branch);
// );
src_offset, dst_offset, RegUse_(normalize_v3s4_proc){
.scratch = R_ResolveScratch,
.src_ptr = R_T0,
.dst_ptr = R_T1,
.recip_est = R_T6,
.norm = R_T7,
.shift = R_V0,
.src_x = R_T2,
.t3 = R_T3,
.t4 = R_T5,
.t5 = R_V1,
});
/* === ATOM 2: cross uz×up_in→right === */
U4 r_a_2 = R_T0;
@@ -209,23 +192,21 @@ internal void resolve_look_at_init(void) {
r_a_2, r_b_2, r_c_2, r_d_2, r_f_2, r_g_2, r_h_2);
/* === ATOM 3: normalize right→ux === */
U4 r_src_offset_3 = O_(ResolveLookAtScratch, right);
U4 r_dst_offset_3 = O_(ResolveLookAtScratch, ux);
U4 r_src_ptr_3 = R_T0;
U4 r_dst_ptr_3 = R_T1;
U4 r_tmp_3 = R_T2;
U4 r_mac1_3 = R_T3;
U4 r_mac2_3 = R_T5;
U4 r_recip_3 = R_T6;
U4 r_norm_3 = R_T7;
U4 r_shift_3 = R_V0;
U4 r_branch_3 = R_V1;
src_offset = O_(ResolveLookAtScratch, right);
dst_offset = O_(ResolveLookAtScratch, ux);
smem.resolve_look_at_atom_addrs[3] = normalize_v3s4_proc(& ab,
R_ResolveScratch,
r_src_offset_3, r_dst_offset_3,
r_src_ptr_3, r_dst_ptr_3, r_tmp_3,
r_mac1_3, r_mac2_3, r_recip_3, r_norm_3,
r_shift_3, r_branch_3);
src_offset, dst_offset, RegUse_(normalize_v3s4_proc){
.scratch = R_ResolveScratch,
.src_ptr = R_T0,
.dst_ptr = R_T1,
.recip_est = R_T6,
.norm = R_T7,
.shift = R_V0,
.src_x = R_T2,
.t3 = R_T3,
.t4 = R_T5,
.t5 = R_V1,
});
/* === ATOM 4: cross uz×ux→up === */
U4 r_a_4 = R_T0;
@@ -240,23 +221,22 @@ internal void resolve_look_at_init(void) {
r_a_4, r_b_4, r_c_4, r_d_4, r_f_4, r_g_4, r_h_4);
/* === ATOM 5: normalize up→uy === */
U4 r_src_offset_5 = O_(ResolveLookAtScratch, up);
U4 r_dst_offset_5 = O_(ResolveLookAtScratch, uy);
U4 r_src_ptr_5 = R_T0;
U4 r_dst_ptr_5 = R_T1;
U4 r_tmp_5 = R_T2;
U4 r_mac1_5 = R_T3;
U4 r_mac2_5 = R_T5;
U4 r_recip_5 = R_T6;
U4 r_norm_5 = R_T7;
U4 r_shift_5 = R_V0;
U4 r_branch_5 = R_V1;
src_offset = O_(ResolveLookAtScratch, up);
dst_offset = O_(ResolveLookAtScratch, uy);
smem.resolve_look_at_atom_addrs[5] = normalize_v3s4_proc(& ab,
R_ResolveScratch,
r_src_offset_5, r_dst_offset_5,
r_src_ptr_5, r_dst_ptr_5, r_tmp_5,
r_mac1_5, r_mac2_5, r_recip_5, r_norm_5,
r_shift_5, r_branch_5);
src_offset, dst_offset,
RegUse_(normalize_v3s4_proc){
.scratch = R_ResolveScratch,
.src_ptr = R_T0,
.dst_ptr = R_T1,
.recip_est = R_T6,
.norm = R_T7,
.shift = R_V0,
.src_x = R_T2,
.t3 = R_T3,
.t4 = R_T5,
.t5 = R_V1,
});
/* === ATOM 6a: populate (m[][] from ux/uy/uz, t[]=0) === */
U4 r_look_at_6a = R_T0; /* tape pop → look_at* */