[PATCH] D64969: [llvm-objdump][NFC] Make the PrettyPrinter::printInst() output buffered

[Seiya Nuta via Phabricator via llvm-commits]

seiya added a comment.

Simply removing formatted_raw_ostream makes llvm-objdump faster as I expected:

  $ hyperfine --warmup 10 './llvm-objdump-master -d ./bin/llvm-objcopy' './bin/llvm-objdump -d ./bin/llvm-objcopy'
  Benchmark #1: ./llvm-objdump-master -d ./bin/llvm-objcopy
    Time (mean ± σ):      2.230 s ±  0.050 s    [User: 1.533 s, System: 0.682 s]
    Range (min … max):    2.115 s …  2.278 s    10 runs
  
  Benchmark #2: ./bin/llvm-objdump -d ./bin/llvm-objcopy
    Time (mean ± σ):     386.4 ms ±  13.0 ms    [User: 376.6 ms, System: 6.1 ms]
    Range (min … max):   366.1 ms … 407.0 ms    10 runs
  
  Summary
    './bin/llvm-objdump -d ./bin/llvm-objcopy' ran
      5.77 ± 0.23 times faster than './llvm-objdump-master -d ./bin/llvm-objcopy'


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64969/new/

https://reviews.llvm.org/D64969