Simon Jakobi pushed to branch wip/sjakobi/cfg-perf-test at Glasgow Haskell Compiler / GHC

Commits:

• 7055fc01
  by Simon Jakobi at 2026-06-03T17:57:11+02:00

  testsuite: fix CmmControlFlowPerf to actually compile the .cmm
  
  The test passed a bare module name as top_mod to multimod_compile, so
  GHC ran `--make CmmControlFlowPerf` and failed to locate the module
  (.cmm sources aren't resolved from a bare module name). Even with the
  extension, `--make` links a non-existent main, and `-no-hs-main` does
  not suppress that.
  
  Use `compile` with the `cmm_src` setup instead: this resolves
  CmmControlFlowPerf.cmm and compiles with `-c` (no link), which is all a
  compiler perf test needs. Drop the now-unnecessary -no-hs-main.
  
  Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
  

1 changed file:

• testsuite/tests/perf/compiler/all.T

Changes:

 test('CmmControlFlowPerf',

      [ only_ways(['optasm']),

        unless(have_ncg(), skip),

+       cmm_src,

        collect_compiler_stats('bytes allocated', 5),

        collect_compiler_residency(15),

        pre_cmd('./genCmmControlFlowPerf'),

        extra_files(['genCmmControlFlowPerf']),

      ],

-     multimod_compile,

-     ['CmmControlFlowPerf', '-O -v0 -no-hs-main'])

+     compile,

+     ['-O -v0'])