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Re: [PATCH 1/3] [ARC] Fix failing pr77309 for ARC700
- From: Jeff Law <law at redhat dot com>
- To: Claudiu Zissulescu <claziss at gmail dot com>, gcc-patches at gcc dot gnu dot org
- Cc: fbedard at synopsys dot com, claziss at synopsys dot com, andrew dot burgess at embecosm dot com
- Date: Wed, 20 Nov 2019 10:41:34 -0700
- Subject: Re: [PATCH 1/3] [ARC] Fix failing pr77309 for ARC700
- References: <20191119090250.5619-1-claziss@gmail.com>
On 11/19/19 2:02 AM, Claudiu Zissulescu wrote:
> The patterns neg_scc_insn and not_scc_insn are not correct, leading to
> failing pr77309 test for ARC700. Add two new bic compare with zero
> patterns to improve output code.
>
> gcc/
> xxxx-xx-xx Claudiu Zissulescu <claziss@synopsys.com>
>
> * config/arc/arc.md (bic_f): Use cc_set_register predicate.
> (bic_cmp0_noout): New pattern.
> (bic_cmp0): Likewise.
> (neg_scc_insn): Remove pattern.
> (not_scc_insn): Likewise.
OK.
FYI between
e00e0f8c391779c8d6cc9ad2fff8056a73c765c2 (good)
fcae029b424f0546ee0efe574dff150be41271ea (bad)
I got the following regression. I haven't looked into it yet at all,
but figured passing it along might be helpful.
> # Comparing 4 common sum files
> ## /bin/sh gcc/contrib/compare_tests /tmp/gxx-sum1.60617 /tmp/gxx-sum2.60617
> Tests that now fail, but worked before (1 tests):
>
> arc-sim: gcc.dg/pr86991.c (test for excess errors)
Jeff