Change opt-level in benchmarks script

[andrewmilson]

This change is 

[andrewmilson]

• Add benchmarks for GKR lookups #673
• Implement LogupOps for SIMD backend #641
• Implement GrandProductOps for SIMD backend #640
• Implement GkrOps for SIMD backend #630
• Implement MleOps for SIMD backend #629
• Add GKR implementation of Logup lookups #623
• Add GKR implementation of Grand Product lookups #620
• Implement GkrOps for CPU backend #621
• Add batch GKR prover and verifier #581
• Rename CPU* structs to Cpu* to conform to Rust's naming convention #617
• Remove AVX backend #616
• Convert wide_fibbonacci AVX backend example to SIMD backend #615
• Update CI to test Wasm simd128, avx2 and aarch64 neon #614
• Fix CirclePointIndex bug in debug mode for 32-bit archs #613
• Change opt-level in benchmarks script #612 👈
• Add benchmarks for SIMD m31 #611
• Add benchmarks for SIMD merkle #610
• dev

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.41%. Comparing base (94f93cc) to head (6c233c2).

Additional details and impacted files

@@                        Coverage Diff                         @@
##           05-02-Add_benchmarks_for_SIMD_m31     #612   +/-   ##
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  Coverage                              93.41%   93.41%           
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  Lines                                  11909    11909           
  Branches                               11909    11909           
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  Hits                                   11125    11125           
  Misses                                   702      702           
  Partials                                  82       82           

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[andrewmilson]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion

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scripts/bench.sh line 5 at r1 (raw file):

# For example, `./scripts/bench.sh` will run all benchmarks.
# or `./scripts/bench.sh M31` will run only the M31 benchmarks.
RUSTFLAGS="-Awarnings -C target-cpu=native -C target-feature=+avx512f -C opt-level=3" cargo bench $@

On my AVX512 AWS machine this improved benchmark performance for all backends.