testsuite, powerpc, v2: Fix vsx-vectorize-* after alignment peeling [PR118567]

On Tue, Jul 01, 2025 at 02:50:40PM -0500, Segher Boessenkool wrote:
> No tests become good tests without effort.  And tests that are not good
> tests require constant maintenance!

Here are two patches, either just the first one or both can be used
and both were tested on powerpc64le-linux.

The first one removes all the checking etc. stuff from the testcases,
as they are just dg-do compile, for the vectorize dump checks all we
care about are the vectorized loops they want to test.

2025-09-05  Jakub Jelinek  <jakub@redhat.com>

	PR testsuite/118567
	* gcc.target/powerpc/vsx-vectorize-1.c: Remove includes, checking
	part of main1 and main.
	* gcc.target/powerpc/vsx-vectorize-2.c: Remove includes, replace
	bar definition with declaration, remove main.
	* gcc.target/powerpc/vsx-vectorize-3.c: Likewise.
	* gcc.target/powerpc/vsx-vectorize-4.c: Likewise.
	* gcc.target/powerpc/vsx-vectorize-5.c: Likewise.
	* gcc.target/powerpc/vsx-vectorize-6.c: Likewise.
	* gcc.target/powerpc/vsx-vectorize-7.c: Likewise.
	* gcc.target/powerpc/vsx-vectorize-8.c: Likewise.

(cherry picked from commit 193b28649933685f4dd3824c01aee4f843cc66b5)