[all-commits] [llvm/llvm-project] eb50e7: DAG: Check libcall function is supported before em...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/dag/check-libcall-before-emission
  Home:   https://github.com/llvm/llvm-project
  Commit: eb50e736c24f5019812fedc83aeac11b178dc729
      https://github.com/llvm/llvm-project/commit/eb50e736c24f5019812fedc83aeac11b178dc729
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-06-16 (Mon, 16 Jun 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AMDGPU/fneg.ll

  Log Message:
  -----------
  DAG: Check libcall function is supported before emission

Whether the libcall implementation is supported should always
be checked before emission. Previously this would emit a call
to a non-existent function, and then since r600 doesn't support
calls it would error on the call. This switches it to a direct
legalization failure.

Also swap to use reportFatalInternalError. Probably should
be reportFatalUsageError; we don't want a backtrace and this will
never be fixed, but it is tested.



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