PR jit/64752 - Rewrite jit testsuite to eliminate use of "file"

PR jit/64752 - Rewrite jit testsuite to eliminate use of "file"

gcc/testsuite/ChangeLog:
	PR jit/64752
	* jit.dg/create-code-for-hello-world-executable.h: New file, taken
	from jit.dg/test-compile-to-executable.c's create_code, with a
	clarification of the output message.
	* jit.dg/harness.h (CHECK_NO_ERRORS): Add test and __func__ to the
	pass/fail message.
	(test_jit): Use CHECK_NO_ERRORS when calling
	gcc_jit_context_compile_to_file.
	* jit.dg/jit.exp (jit-dg-test): Update grep for rename of
	jit-verify-compile-to-file to jit-verify-output-file-was-created.
	(jit-setup-compile-to-file): Likewise.  Add a verbose comment
	about deletions that are attempted.
	(jit-verify-compile-to-file): Rename to...
	(jit-verify-output-file-was-created): ...this, and drop the
	attempt to run "file" and verify the output.
	(jit-verify-assembler): New function.
	(jit-verify-object): New function.
	(jit-verify-dynamic-library): New function.
	* jit.dg/test-compile-to-assembler.c (create_code): Eliminate in
	favor of an implementation from new file
	create-code-for-hello-world-executable.h, which also adds a
	"main".
	(dg-final): Replace jit-verify-compile-to-file with
	jit-verify-output-file-was-created, and invoke new function
	jit-verify-assembler.
	* jit.dg/test-compile-to-dynamic-library.c (create_code): Clarify
	the output message.
	(dg-final): Replace jit-verify-compile-to-file with
	jit-verify-output-file-was-created, and invoke new function
	jit-verify-dynamic-library.
	* jit.dg/test-compile-to-executable.c (create_code): Eliminate in
	favor of an implementation from new file
	create-code-for-hello-world-executable.h, which also adds a
	"main".
	(dg-final): Replace jit-verify-compile-to-file with
	jit-verify-output-file-was-created.  Strengthen the expected stdout
	from the built executable.
	* jit.dg/test-compile-to-object.c (create_code): Eliminate in
	favor of an implementation from new file
	create-code-for-hello-world-executable.h, which also adds a
	"main".
	(dg-final): Replace jit-verify-compile-to-file with
	jit-verify-output-file-was-created, and invoke new function
	jit-verify-object.
	* jit.dg/verify-dynamic-library.c: New source file.

From-SVN: r220494