[bazel] Compare mask rom built by bazel with meson

[alphan]

Before we complete the transition from meson to bazel we should compare the mask roms built by bazel and meson. Some things that may be worth checking:

• All unit (off-target) and functional (on-target) tests should run and pass.
• Binary size.
• Symbols.
• Disassembly diff (spot checks).
• CLI arguments to toolchain (if this is relatively easy to obtain and compare in a meaningful way).

cc @arunthomas

[alphan]

doc

[timothytrippel]

@alphan can we close this now? (I remember you mentioning you got things worked out such that both images are the same now?)

[alphan]

@timothytrippel yes, the only blocking issue (a minor difference in size, independent of optimization flags) was fixed in #12451.

The last time I checked, bazel was running all tests ran by meson (+ 4 additional tests) and I also did a handful of spot checks in disassembly.

Also, the last time I checked, functests were run by systemtest. I guess we can check those when we deprecate it. PLMK if we should create a separate issue for this.

I created the following issues for optimization flags, symbol visibility, annotated disassembly, and warnings:

• [bazel] Optimization level #12549
• [bazel] Symbol visibility #12551
• [bazel] Annotated disassembly #12552
• [bazel] Warning flags #12553

[timothytrippel]

sounds great, thanks @alphan !