[gcc r17-2727] testsuite/aarch64: accept either ubfx width in struct_3 test_nonpst8

https://gcc.gnu.org/g:61379576eed5c5847c6ccfab5c712ecd5919ac13

commit r17-2727-g61379576eed5c5847c6ccfab5c712ecd5919ac13
Author: Kyrylo Tkachov <[email protected]>
Date:   Sun Jul 26 05:18:55 2026 -0700

    testsuite/aarch64: accept either ubfx width in struct_3 test_nonpst8
    
    r17-2413-ge46d96d20bbf ("PR middle-end/123236: Simplify (int)((long
    long)x >> 4)") relaxed the guard on the truncate-of-extract
    simplification in simplify_truncation, so combine can now narrow
    
      (truncate:SI (zero_extract:DI (subreg:DI (reg:V2QI)) 8 8))
    
    to an SImode extract, and test_nonpst8 ends in ubfx w0 rather than
    ubfx x0.  Both compute the same 64-bit result in x0.
    
    These blocks exist to check the SVE PCS handling of a non-pure-scalable
    struct, so the width the extract happens to use is incidental.  Accept
    either rather than swapping one hard-coded width for the other, so the
    test does not break again the next time the narrowing decision moves.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/aarch64/sve/pcs/struct_3_128.c (test_nonpst8): Accept
            a ubfx of either width.
            * gcc.target/aarch64/sve/pcs/struct_3_256.c (test_nonpst8):
            Likewise for little endian.
    
    Signed-off-by: Kyrylo Tkachov <[email protected]>

Diff:
---
 gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_128.c | 2 +-
 gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_256.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_128.c b/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_128.c
index 7583d0c0c1c4..02bf10cd4fd5 100644
--- a/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_128.c
+++ b/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_128.c
@@ -1074,7 +1074,7 @@ SEL2 (struct, nonpst8)
 
 /*
 ** test_nonpst8:
-**	ubfx	x0, x0, 8, 8
+**	ubfx	[wx]0, [wx]0, 8, 8
 **	ret
 */
 /* { dg-final { scan-assembler-not {\t\.variant_pcs\ttest_nonpst8\n} } } */
diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_256.c b/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_256.c
index af0af29d5150..02ec1aeae052 100644
--- a/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_256.c
+++ b/gcc/testsuite/gcc.target/aarch64/sve/pcs/struct_3_256.c
@@ -1187,7 +1187,7 @@ SEL2 (struct, nonpst8)
 
 /*
 ** test_nonpst8: { target aarch64_little_endian }
-**	ubfx	x0, x0, 8, 8
+**	ubfx	[wx]0, [wx]0, 8, 8
 **	ret
 */
 /*