Turn test cases into UNSUPPORTED if running into 'sorry, unimplemented: dynamic stack allocation not supported' (was: [1/6] nvptx testsuite patches: alloca)

[Thomas Schwinge]

Hi!

On 2014-10-21T16:12:24+0200, Bernd Schmidt <bernds@codesourcery.com> wrote:
> This deals with uses of alloca in the testsuite. Some tests require it 
> outright, others only at -O0, and others require it implicitly [...]

> --- gcc/testsuite/lib/target-supports.exp.orig
> +++ gcc/testsuite/lib/target-supports.exp

> +# Return 1 if alloca is supported, 0 otherwise.
> +
> +proc check_effective_target_alloca {} {
> +    if { [istarget nvptx-*-*] } {
> +	return 0
> +    }
> +    return 1
> +}

> --- gcc/testsuite/gcc.c-torture/execute/20010209-1.c.orig
> +++ gcc/testsuite/gcc.c-torture/execute/20010209-1.c
> @@ -1,3 +1,4 @@
> +/* { dg-require-effective-target alloca } */
> [...]

..., and many more got added right away, and yet more over the course of
the last decade.  And still we've got FAILs due to missing
effective-target 'alloca' annotations, and we've got PASSes suppressed by
UNSUPPORTED due to unneeded (or, no longer needed) effective-target
'alloca' annotations.

Pushed to trunk branch commit 0128fa8b41498d8822451d98149c6357e6ab8074
"Turn test cases into UNSUPPORTED if running into 'sorry, unimplemented: dynamic stack allocation not supported'",
see attached.


Grüße
 Thomas


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