[all-commits] [llvm/llvm-project] aacea0: [utils] Add script to generate elaborated IR and a...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: aacea0d0f67401f5a0b74947f3ff179ade9cbf6d
      https://github.com/llvm/llvm-project/commit/aacea0d0f67401f5a0b74947f3ff179ade9cbf6d
  Author: Fangrui Song <i at maskray.me>
  Date:   2024-05-08 (Wed, 08 May 2024)

  Changed paths:
    M llvm/docs/TestingGuide.rst
    M llvm/test/tools/UpdateTestChecks/lit.local.cfg
    A llvm/test/tools/UpdateTestChecks/update_test_body/Inputs/basic-asm.test.expected
    A llvm/test/tools/UpdateTestChecks/update_test_body/Inputs/basic.test.expected
    A llvm/test/tools/UpdateTestChecks/update_test_body/basic-asm.test
    A llvm/test/tools/UpdateTestChecks/update_test_body/basic.test
    A llvm/test/tools/UpdateTestChecks/update_test_body/empty-stdout.test
    A llvm/test/tools/UpdateTestChecks/update_test_body/gen-absent.test
    A llvm/test/tools/UpdateTestChecks/update_test_body/gen-fail.test
    A llvm/test/tools/UpdateTestChecks/update_test_body/gen-unterminated.test
    A llvm/test/tools/UpdateTestChecks/update_test_body/lit.local.cfg
    M llvm/test/tools/llvm-dwarfdump/X86/formclass4.s
    M llvm/test/tools/llvm-dwarfdump/X86/prettyprint_type_units_split_v5.s
    A llvm/utils/update_test_body.py

  Log Message:
  -----------
  [utils] Add script to generate elaborated IR and assembly tests (#89026)

Generally, IR and assembly test files benefit from being cleaned to
remove unnecessary details. However, for tests requiring elaborate
IR or assembly files where cleanup is less practical (e.g., large amount
of debug information output from Clang), the current practice is to
include the C/C++ source file and the generation instructions as
comments.

This is inconvenient when regeneration is needed. This patch adds
`llvm/utils/update_test_body.py` to allow easier regeneration.

`ld.lld --debug-names` tests (#86508) utilize this script for
Clang-generated assembly tests.

Note: `-o pipefail` is standard (since
https://www.austingroupbugs.net/view.php?id=789) but not supported by
dash.

Link:
https://discourse.llvm.org/t/utility-to-generate-elaborated-assembly-ir-tests/78408



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