8000 GH-93678: reduce boilerplate and code repetition in the compiler by iritkatriel · Pull Request #93682 · python/cpython · GitHub
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GH-93678: reduce boilerplate and code repetition in the compiler #93682

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Merged
merged 18 commits into from
Jun 14, 2022
Merged

GH-93678: reduce boilerplate and code repetition in the compiler #93682

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996be64
move line/noline to arg and remove _noline version of functions
iritkatriel Jun 10, 2022
af31e92
add struct location to reduce boilerplate
iritkatriel Jun 10, 2022
f8a0767
merge basicblock_addop, basicblock_addop_i and basicblock_add_jump in…
iritkatriel Jun 10, 2022
430b4b9
add news
iritkatriel Jun 10, 2022
66d5609
assume that oparg is < (1<<30)
iritkatriel Jun 10, 2022
7670a7c
Merge remote-tracking branch 'upstream/main' into codegen-reduce-repe…
iritkatriel Jun 10, 2022
7d74572
use the new location struct for the compiler unit's location
iritkatriel Jun 10, 2022
016ebbc
use the new location struct for the instruction location
iritkatriel Jun 10, 2022
5e06cad
basicblock_addop takes location by reference
iritkatriel Jun 10, 2022
c23e2cf
LOCATION needs to return a const
iritkatriel Jun 10, 2022
fc74555
define static no_location in function scope
iritkatriel Jun 10, 2022
9220fc1
are we const now?
iritkatriel Jun 10, 2022
9b5dc34
trivial stuff
iritkatriel Jun 10, 2022
5330060
Merge remote-tracking branch 'upstream/main' into codegen-reduce-repe…
iritkatriel Jun 13, 2022
414e26a
remove two unused fields from struct assembler
iritkatriel Jun 13, 2022
26dc190
define NO_LOCATION as a static const in global scope
iritkatriel Jun 13, 2022
98d24f2
Merge remote-tracking branch 'upstream/main' into codegen-reduce-repe…
iritkatriel Jun 14, 2022
7851ccd
Merge remote-tracking branch 'upstream/main' into codegen-reduce-repe…
iritkatriel Jun 14, 2022
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define NO_LOCATION as a static const in global scope
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@iritkatriel
iritkatriel committed Jun 13, 2022
commit 26dc190be73b24ca25bbc3c377e1745ba7c47c9e
20 changes: 7 additions & 13 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -159,7 +159,7 @@ struct location {
#define LOCATION(LNO, END_LNO, COL, END_COL) \
((const struct location){(LNO), (END_LNO), (COL), (END_COL)})

#define NO_LOCATION {-1, -1, -1, -1}
static struct location NO_LOCATION = {-1, -1, -1, -1};

struct instr {
int i_opcode;
Expand Down Expand Up @@ -1285,8 +1285,6 @@ basicblock_addop(basicblock *b, int opcode, int oparg,
IS_BLOCK_PUSH_OPCODE(opcode));
assert(oparg == 0 || target == NULL);

static struct location no_location = NO_LOCATION;

int off = basicblock_next_instr(b);
if (off < 0) {
return 0;
Expand All @@ -1295,7 +1293,7 @@ basicblock_addop(basicblock *b, int opcode, int oparg,
i->i_opcode = opcode;
i->i_oparg = oparg;
i->i_target = target;
i->i_loc = loc ? *loc : no_location;
i->i_loc = loc ? *loc : NO_LOCATION;

return 1;
}
Expand Down Expand Up @@ -7388,8 +7386,7 @@ push_cold_blocks_to_end(struct compiler *c, basicblock *entry, int code_flags) {
if (explicit_jump == NULL) {
return -1;
}
static struct location no_location = NO_LOCATION;
basicblock_addop(explicit_jump, JUMP, 0, b->b_next, &no_location);
basicblock_addop(explicit_jump, JUMP, 0, b->b_next, &NO_LOCATION);

explicit_jump->b_cold = 1;
explicit_jump->b_next = b->b_next;
Expand Down Expand Up @@ -8294,8 +8291,6 @@ insert_prefix_instructions(struct compiler *c, basicblock *entryblock,
{
assert(c->u->u_firstlineno > 0);

static struct location no_location = NO_LOCATION;

/* Add the generator prefix instructions. */
if (code_flags & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR)) {
struct instr make_gen = {
Expand All @@ -8310,7 +8305,7 @@ insert_prefix_instructions(struct compiler *c, basicblock *entryblock,
struct instr pop_top = {
.i_opcode = POP_TOP,
.i_oparg = 0,
.i_loc = no_location,
.i_loc = NO_LOCATION,
.i_target = NULL,
};
if (insert_instruction(entryblock, 1, &pop_top) < 0) {
Expand Down Expand Up @@ -8342,7 +8337,7 @@ insert_prefix_instructions(struct compiler *c, basicblock *entryblock,
.i_opcode = MAKE_CELL,
// This will get fixed in offset_derefs().
.i_oparg = oldindex,
.i_loc = no_location,
.i_loc = NO_LOCATION,
.i_target = NULL,
};
if (insert_instruction(entryblock, ncellsused, &make_cell) < 0) {
Expand All @@ -8357,7 +8352,7 @@ insert_prefix_instructions(struct compiler *c, basicblock *entryblock,
struct instr copy_frees = {
.i_opcode = COPY_FREE_VARS,
.i_oparg = nfreevars,
.i_loc = no_location,
.i_loc = NO_LOCATION,
.i_target = NULL,
};
if (insert_instruction(entryblock, 0, &copy_frees) < 0) {
Expand Down Expand Up @@ -9363,8 +9358,7 @@ propagate_line_numbers(struct assembler *a) {
continue;
}

static struct location no_location = NO_LOCATION;
struct location prev_location = no_location;
struct location prev_location = NO_LOCATION;
for (int i = 0; i < b->b_iused; i++) {
if (b->b_instr[i].i_loc.lineno < 0) {
b->b_instr[i].i_loc = prev_location;
Expand Down
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