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https://github.com/luau-lang/luau.git
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59 lines
1.8 KiB
Python
59 lines
1.8 KiB
Python
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#!/usr/bin/python3
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# This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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# Given the output of --compile=codegenverbose in stdin, this script outputs statistics about bytecode/IR
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import sys
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import re
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from collections import defaultdict
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count_bc = defaultdict(int)
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count_ir = defaultdict(int)
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count_asm = defaultdict(int)
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count_irasm = defaultdict(int)
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# GETTABLEKS R10 R1 K18 ['s']
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# L1: DIV R14 R13 R3
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re_bc = re.compile(r'^(?:L\d+: )?([A-Z_]+) ')
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# # CHECK_SLOT_MATCH %178, K3, bb_fallback_37
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# # %175 = LOAD_TAG R15
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re_ir = re.compile(r'^# (?:%\d+ = )?([A-Z_]+) ')
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# cmp w14,#5
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re_asm = re.compile(r'^ ([a-z.]+) ')
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current_ir = None
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for line in sys.stdin.buffer.readlines():
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line = line.decode('utf-8', errors='ignore').rstrip()
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if m := re_asm.match(line):
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count_asm[m[1]] += 1
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if current_ir:
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count_irasm[current_ir] += 1
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elif m := re_ir.match(line):
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count_ir[m[1]] += 1
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current_ir = m[1]
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elif m := re_bc.match(line):
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count_bc[m[1]] += 1
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def display(name, counts, limit=None, extra=None):
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items = sorted(counts.items(), key=lambda p: p[1], reverse=True)
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total = 0
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for k,v in items:
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total += v
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shown = 0
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print(name)
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for i, (k,v) in enumerate(items):
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if i == limit:
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if shown < total:
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print(f' {"Others":25}: {total-shown} ({(total-shown)/total*100:.1f}%)')
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break
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print(f' {k:25}: {v} ({v/total*100:.1f}%){"; "+extra(k) if extra else ""}')
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shown += v
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print()
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display("Bytecode", count_bc, limit=20)
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display("IR", count_ir, limit=20)
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display("Assembly", count_asm, limit=10)
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display("IR->Assembly", count_irasm, limit=30, extra=lambda op: f'{count_irasm[op] / count_ir[op]:.1f} insn/op')
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