* Claudiu Zissulescu <claudiu.zissule...@synopsys.com> [2017-05-24 12:54:22
+0200]:
> From: claziss <claz...@synopsys.com>
>
> The tst_movb pattern is missing guarding when spitting.
>
> gcc/
> 2017-05-24 Claudiu Zissulescu <claz...@synopsys.com>
>
> * config/arc/arc.md (tst_movb): Add guard when splitting.
Looks good. Sorry for introducing this issue.
Thanks,
Andrew
>
> testsuite/
> 2017-05-24 Claudiu Zissulescu <claz...@synopsys.com>
>
> * gcc.target/arc/pr9001195952.c: New test.
> ---
> gcc/config/arc/arc.md | 2 +-
> gcc/testsuite/gcc.target/arc/pr9001195952.c | 11 +++++++++++
> 2 files changed, 12 insertions(+), 1 deletion(-)
> create mode 100755 gcc/testsuite/gcc.target/arc/pr9001195952.c
>
> diff --git a/gcc/config/arc/arc.md b/gcc/config/arc/arc.md
> index e78abaa..d5510ae 100644
> --- a/gcc/config/arc/arc.md
> +++ b/gcc/config/arc/arc.md
> @@ -863,7 +863,7 @@ archs4xd, archs4xd_slow"
> (clobber (match_scratch:SI 3 "=X,X,X,X,X,X,Rrq,Rrq,c"))]
> "TARGET_NPS_BITOPS"
> "movb.f.cl %3,%1,%p2,%p2,%s2"
> - "reload_completed
> + "TARGET_NPS_BITOPS && reload_completed
> && (extract_constrain_insn_cached (insn), (which_alternative & ~1) != 6)"
> [(set (match_dup 0) (match_dup 4))])
>
> diff --git a/gcc/testsuite/gcc.target/arc/pr9001195952.c
> b/gcc/testsuite/gcc.target/arc/pr9001195952.c
> new file mode 100755
> index 0000000..252438d
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/arc/pr9001195952.c
> @@ -0,0 +1,11 @@
> +/* { dg-do compile } */
> +/* { dg-skip-if "" { ! { clmcpu } } } */
> +/* { dg-options "-mcpu=archs -Os -w -fpic" } */
> +
> +/* tst_movb split pattern is wrong for anything else than NPS
> + chip. */
> +__bswap_32___bsx() {
> + int a = __builtin_bswap32(__bswap_32___bsx);
> + if (a & 1048575)
> + zlog_warn();
> +}
> --
> 1.9.1
>
