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GH-99554: Pack location tables more effectively #99556

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Merged
brandtbucher merged 7 commits into from
Dec 22, 2022
Merged

GH-99554: Pack location tables more effectively #99556

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2b90c42
Refactor location emission to not use instructions
brandtbucher Nov 15, 2022
6d96e8c
Compress location entries more effectively
brandtbucher Nov 15, 2022
f191f95
blurb add
brandtbucher Nov 16, 2022
24ce84f
fixup
brandtbucher Nov 16, 2022
be7eb0a
Catch up with main
brandtbucher Dec 15, 2022
37909a4
Catch up with main
brandtbucher Dec 17, 2022
d616c2d
Remove special case
brandtbucher Dec 17, 2022
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Catch up with main
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@brandtbucher
brandtbucher committed Dec 15, 2022
commit be7eb0af8c34b9c6da666f52bd6e1d6315a41716
16 changes: 8 additions & 8 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7783,7 +7783,7 @@ write_location_info_entry(struct assembler* a, location loc, int isize)
if (loc.end_lineno == loc.lineno || loc.end_lineno == -1) {
write_location_info_no_column(a, isize, line_delta);
a->a_lineno = loc.lineno;
return 1;
return 0;
}
}
else if (loc.end_lineno == loc.lineno) {
Expand All @@ -7794,23 +7794,23 @@ write_location_info_entry(struct assembler* a, location loc, int isize)
if (line_delta >= 0 && line_delta < 3 && column < 128 && end_column < 128) {
write_location_info_oneline_form(a, isize, line_delta, column, end_column);
a->a_lineno = loc.lineno;
return 1;
return 0;
}
}
write_location_info_long_form(a, loc, isize);
a->a_lineno = loc.lineno;
return 1;
return 0;
}

static int
assemble_emit_location(struct assembler* a, location loc, int isize)
{
if (isize == 0) {
return 1;
return 0;
}
while (isize > 8) {
if (!write_location_info_entry(a, loc, 8)) {
return 0;
if (write_location_info_entry(a, loc, 8)) {
return -1;
}
isize -= 8;
}
Expand Down Expand Up @@ -8879,7 +8879,7 @@ assemble(struct compiler *c, int addNone)
for (basicblock *b = g->g_entryblock; b != NULL; b = b->b_next) {
for (int j = 0; j < b->b_iused; j++) {
if (!same_location(loc, b->b_instr[j].i_loc)) {
if (!assemble_emit_location(&a, loc, size)) {
if (assemble_emit_location(&a, loc, size)) {
goto error;
}
loc = b->b_instr[j].i_loc;
Expand All @@ -8888,7 +8888,7 @@ assemble(struct compiler *c, int addNone)
size += instr_size(&b->b_instr[j]);
}
}
if (!assemble_emit_location(&a, loc, size)) {
if (assemble_emit_location(&a, loc, size)) {
goto error;
}

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