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GH-140683: JIT: Improve machine code for loading smaller constants on AArch64. (GH-142511)

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* Use movz and movk instructions for loading 16 and 32 bit operands and oparg.
* Loading of 64 bit operands is unchanged.
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Mark Shannon 2025-12-11 12:33:39 +00:00 • committed by GitHub
parent 469f191a85
commit 4eab90f4f3
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10 changed files with 320 additions and 135 deletions
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Python/bytecodes.c
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@ -810,7 +810,7 @@ dummy_func(
assert(next_instr->op.code == STORE_FAST);
next_oparg = next_instr->op.arg;
#else
next_oparg = (int)CURRENT_OPERAND0();
next_oparg = (int)CURRENT_OPERAND0_16();
#endif
_PyStackRef *target_local = &GETLOCAL(next_oparg);
assert(PyUnicode_CheckExact(left_o));