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py/asmxtensa: Optimise loading local addr and support larger offsets.

This commit is contained in:
Damien George 2018-08-17 01:11:22 +10:00
parent fd10a11c6b
commit 1ad44acb15
1 changed files with 7 additions and 2 deletions
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9
py/asmxtensa.c
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@ -178,8 +178,13 @@ void asm_xtensa_mov_reg_local(asm_xtensa_t *as, uint reg_dest, int local_num) {
}
void asm_xtensa_mov_reg_local_addr(asm_xtensa_t *as, uint reg_dest, int local_num) {
asm_xtensa_op_mov_n(as, reg_dest, ASM_XTENSA_REG_A1);
asm_xtensa_op_addi(as, reg_dest, reg_dest, (4 + local_num) * WORD_SIZE);
uint off = (4 + local_num) * WORD_SIZE;
if (SIGNED_FIT8(off)) {
asm_xtensa_op_addi(as, reg_dest, ASM_XTENSA_REG_A1, off);
} else {
asm_xtensa_op_movi(as, reg_dest, off);
asm_xtensa_op_add(as, reg_dest, reg_dest, ASM_XTENSA_REG_A1);
}
}
void asm_xtensa_mov_reg_pcrel(asm_xtensa_t *as, uint reg_dest, uint label) {