awarzynski added inline comments.
================
Comment at: flang/test/Driver/linker-flags.f90:28
+
+! GNU-WITHOUTLM-LABEL: "{{.*}}ld"
+! GNU-WITHOUTLM-SAME: "[[object_file]]"
----------------
I think that GNU in this case might be a bit misleading. These linker
invocations are defined in almost completely independent toolchains: [[
https://github.com/llvm/llvm-project/blob/b9a7dea9171416a998e4fa3333fb9f76baa167b8/clang/lib/Driver/ToolChains/Darwin.h#L33-L47
| MachOTool ]], [[
https://github.com/llvm/llvm-project/blob/b9a7dea9171416a998e4fa3333fb9f76baa167b8/clang/lib/Driver/ToolChains/Gnu.h#L40-L51
| gnutools ]].
I't be inclined to try this instead:
```
! RUN: %flang -### -flang-experimental-exec -target ppc64le-linux-gnu
%S/Inputs/hello.f90 2>&1 | FileCheck %s --check-prefixes=CHECK,GNU
! RUN: %flang -### -flang-experimental-exec -target aarch64-apple-darwin
%S/Inputs/hello.f90 2>&1 | FileCheck %s --check-prefixes=CHECK,DARWIN
! RUN: %flang -### -flang-experimental-exec -target x86_64-windows-gnu
%S/Inputs/hello.f90 2>&1 | FileCheck %s --check-prefixes=CHECK,MINGW
! RUN: %flang -### -flang-experimental-exec -target aarch64-windows-msvc
%S/Inputs/hello.f90 2>&1 | FileCheck %s --check-prefixes=CHECK,MSVC
```
This will lead to more duplication, but would clarify things a bit.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D126291/new/
https://reviews.llvm.org/D126291
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