On 2/29/24 13:15, Stefan Schulze Frielinghaus wrote:
> Starting with r14-8319-g86de9b66480b71 fwprop improved so that vpdi is
> no longer required.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/s390/vector/long-double-to-i64.c: Fix scan
> assembler directive.
Should we perhaps rather turn the scan-assembler directives into something
which checks for the
absence of vpdi then? In order to get notified once this really useful
optimization breaks?
Andreas
> ---
> .../gcc.target/s390/vector/long-double-to-i64.c | 13 +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/gcc/testsuite/gcc.target/s390/vector/long-double-to-i64.c
> b/gcc/testsuite/gcc.target/s390/vector/long-double-to-i64.c
> index 2dbbb5d1c03..ed89878e6ee 100644
> --- a/gcc/testsuite/gcc.target/s390/vector/long-double-to-i64.c
> +++ b/gcc/testsuite/gcc.target/s390/vector/long-double-to-i64.c
> @@ -1,19 +1,24 @@
> /* { dg-do compile } */
> /* { dg-options "-O3 -march=z14 -mzarch --save-temps" } */
> /* { dg-do run { target { s390_z14_hw } } } */
> +/* { dg-final { check-function-bodies "**" "" "" { target { lp64 } } } } */
> +
> #include <assert.h>
> #include <stdint.h>
>
> +/*
> +** long_double_to_i64:
> +** ld %f0,0\(%r2\)
> +** ld %f2,8\(%r2\)
> +** cgxbr %r2,5,%f0
> +** br %r14
> +*/
> __attribute__ ((noipa)) static int64_t
> long_double_to_i64 (long double x)
> {
> return x;
> }
>
> -/* { dg-final { scan-assembler-times {\n\tvpdi\t%v\d+,%v\d+,%v\d+,1\n} 1 } }
> */
> -/* { dg-final { scan-assembler-times {\n\tvpdi\t%v\d+,%v\d+,%v\d+,5\n} 1 } }
> */
> -/* { dg-final { scan-assembler-times {\n\tcgxbr\t} 1 } } */
> -
> int
> main (void)
> {
