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GH-135379: Support limited scalar replacement for replicated uops in the JIT code generator. (GH-135563)

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* Use it to support efficient specializations of COPY and SWAP in the JIT.
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Mark Shannon 2025-06-17 13:43:09 +01:00 • committed by GitHub
parent a9e66a7c50
commit 8dd8b5c2f0
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9 changed files with 313 additions and 198 deletions
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Python/optimizer.c
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@ -1292,8 +1292,8 @@ uop_optimize(
for (int pc = 0; pc < length; pc++) {
int opcode = buffer[pc].opcode;
int oparg = buffer[pc].oparg;
if (oparg < _PyUop_Replication[opcode]) {
buffer[pc].opcode = opcode + oparg + 1;
if (oparg < _PyUop_Replication[opcode].stop && oparg >= _PyUop_Replication[opcode].start) {
buffer[pc].opcode = opcode + oparg + 1 - _PyUop_Replication[opcode].start;
assert(strncmp(_PyOpcode_uop_name[buffer[pc].opcode], _PyOpcode_uop_name[opcode], strlen(_PyOpcode_uop_name[opcode])) == 0);
}
else if (is_terminator(&buffer[pc])) {