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  <claz...@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

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