[PATCH v2, rs6000] Put dg-options before effective target checks

[HAO CHEN GUI via Gcc-patches]

Hi,
  This patch changes the sequence of test directives for 3 test cases.
Originally, these 3 cases got failed or unsupported on some platforms, as
their effective target checks depend on compiling options.

  Bootstrapped and tested on powerpc64-linux BE and LE with no regressions.
Is this okay for trunk? Any recommendations? Thanks a lot.

Thanks
Gui Haochen

ChangeLog
2022-08-31  Haochen Gui  <guih...@linux.ibm.com>

rs6000: Change the sequence of test directives for some test cases.  Put
dg-options before effective target checks as those has_arch_* adopt
current_compiler_flags in their checks and rely on compiling options to get an
accurate check.  dg-options setting before dg-require-effective-target are
added into current_compiler_flags, but not added if they're after.  So
adjusting the location of dg-options makes the check more robust.

gcc/testsuite/
        * gcc.target/powerpc/pr92398.p9+.c: Put dg-options before effective
        target check.  Replace lp64 check with has_arch_ppc64 and int128.
        * gcc.target/powerpc/pr92398.p9-.c: Likewise.
        * gcc.target/powerpc/pr93453-1.c: Put dg-options before effective
        target check.


patch.diff
diff --git a/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c 
b/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c
index 72dd1d9a274..b4f5c7f4b82 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c
@@ -1,6 +1,10 @@
-/* { dg-do compile { target { lp64 && has_arch_pwr9 } } } */
+/* { dg-do compile } */
+/* { dg-options "-O2 -mdejagnu-cpu=power9 -mvsx" } */
+/* { dg-require-effective-target has_arch_ppc64 } */
+/* { dg-require-effective-target int128 } */
 /* { dg-require-effective-target powerpc_vsx_ok } */
-/* { dg-options "-O2 -mvsx" } */
+/* The test case can be compiled on all platforms with compiling option
+   -mdejagnu-cpu=power9.  */

 /* { dg-final { scan-assembler-times {\mmtvsrdd\M} 1 } } */
 /* { dg-final { scan-assembler-times {\mxxlnor\M} 1 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c 
b/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c
index bd7fa98af51..4e6a8c8cb8e 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c
@@ -1,6 +1,8 @@
-/* { dg-do compile { target { lp64 && {! has_arch_pwr9} } } } */
-/* { dg-require-effective-target powerpc_vsx_ok } */
 /* { dg-options "-O2 -mvsx" } */
+/* { dg-do compile { target { ! has_arch_pwr9 } } } */
+/* { dg-require-effective-target int128 } */
+/* { dg-require-effective-target has_arch_ppc64 } */
+/* { dg-require-effective-target powerpc_vsx_ok } */

 /* { dg-final { scan-assembler-times {\mnot\M} 2 { xfail be } } } */
 /* { dg-final { scan-assembler-times {\mstd\M} 2 { xfail { { {! has_arch_pwr9} 
&& has_arch_pwr8 } && be } } } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/pr93453-1.c 
b/gcc/testsuite/gcc.target/powerpc/pr93453-1.c
index b396458ba12..6f4d899c114 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr93453-1.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr93453-1.c
@@ -1,5 +1,6 @@
-/* { dg-do compile { target has_arch_ppc64 } } */
+/* { dg-do compile } */
 /* { dg-options "-mdejagnu-cpu=power6 -O2" } */
+/* { dg-require-effective-target has_arch_ppc64 } */

 unsigned long load_byte_reverse (unsigned long *in)
 {