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Moving definitions to use dedicated scratch register.

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ed
2026-08-18 09:26:49 -04:00
parent da007d342e
commit 86fe189b4e
5 changed files with 108 additions and 67 deletions
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code/duffle/gte.atom.c
+2 -2
View File
@@ -275,7 +275,7 @@ typedef Struct_(RegUse_build_normalize_v3s4) {
Reg scratch; /* scratchpad base; loaded via load_word_imm below. */
Reg src_ptr;
Reg dst_ptr;
Reg recip_est; /* |v|² sum + shift-input + sqrtbl[index] */
Reg recip_est; /* |v|² sum + shift-input + sqrtbl[index] */
Reg norm; Reg shift;
Reg src_x;
union { Reg mac1_scratch, dst_offset; } t3;
@@ -372,7 +372,7 @@ atom_info(atom_bind(Binds_gte_cross_v3s4)) MipsAtom_Proc_(aa, {
load_word(r.y.src_a, R_TapePtr, O_(Binds_gte_cross_v3s4,src_a)),
load_word(r.z.src_b, R_TapePtr, O_(Binds_gte_cross_v3s4,src_b)),
load_word(r.x.out, R_TapePtr, O_(Binds_gte_cross_v3s4,out)),
LdSlot_ add_ui_self(R_TapePtr, S_(Binds_gte_cross_v3s4)),
LdSlot_ add_ui_self( R_TapePtr, S_(Binds_gte_cross_v3s4)),
mac_load_v3s4(r.a, r.y.src_a, 0), LdSlot_
mac_load_v3s4(r.b, r.z.src_b, 0), LdSlot_
code/duffle/lottes_tape.h
+4 -4
View File
@@ -97,8 +97,8 @@ enum {
R_Atom5 = R_T5,
R_Atom6 = R_T6,
R_Atom7 = R_T7,
R_Atom8 = R_T8,
R_Atom9 = R_T9,
R_Atom8 = R_T8,
R_Atom9 = R_T9,
R_Atom10 = R_V0, // Tend to be used with gte DMAs
R_Atom11 = R_V1, // Tend to be used with gte DMAs
R_Atom12 = R_A0,
@@ -383,8 +383,8 @@ FI_ Reg regfile__alloc_helper(A2_U2 file, Reg r_id) {
* any of them while R0, R1, R26-R31 remain reserved. */
I_ Reg regfile_alloc(RegFile_R rf) {
Reg allocated = 0;
for index_iter(U4, idx, 0, <, Array_len(regfile_alloc_order)) {
allocated = regfile__alloc_helper(rf->GPR, idx);
for index_iter(U4, r_id, R_V0, <, R_T9) {
allocated = regfile__alloc_helper(rf->GPR, r_id);
Jmp_nZero_(allocated,resolved);
}
assert(allocated != 0);