On 11/7/19 5:48 AM, Matthias Klose wrote:
On 05.11.19 13:45, Richard Biener wrote:

The first release candidate for GCC 7.5 is available from

  https://gcc.gnu.org/pub/gcc/snapshots/7.5.0-RC-20191105/

and shortly its mirrors.  It has been generated from SVN revision 277823.

I have so far bootstrapped and tested the release candidate on
{x86_64,i586,ppc64le,s390x,aarch64}-linux.  Please test it
and report any issues to bugzilla.

If all goes well, I'd like to release 7.5 on Thursday, November 14th.

With a distribution build (Ubuntu) on amd64, i386, armhf, arm64, ppc64el and s390x, I don't see any regressions in the GCC testsuite (compared to 7.4.0), except for two issues on ppc64el:

FAIL: gcc.target/powerpc/pr87532.c (test for excess errors)
Excess errors:
/build/gcc-7-8odB_r/gcc-7-7.4.0/src/gcc/testsuite/gcc.target/powerpc/pr87532.c:45:27: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t {aka long unsigned int}' [-Wformat=]

is a new test, and only caused by default hardening settings.

PASS: gcc.dg/vect/slp-perm-4.c execution test
FAIL: gcc.dg/vect/slp-perm-4.c scan-tree-dump-times vect "vectorized 1 loops" 1 PASS: gcc.dg/vect/slp-perm-4.c scan-tree-dump-times vect "gaps requires scalar epilogue loop" 0 FAIL: gcc.dg/vect/slp-perm-4.c scan-tree-dump-times vect "vectorizing stmts using SLP" 1


I finally bisected this to r275208:


2019-08-30  Richard Biener  <rguent...@suse.de  <mailto:rguenther%40suse.de>>

        Backport from mainline
        2019-05-27  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR tree-optimization/90637
        * tree-ssa-sink.c (statement_sink_location): Honor the
        computed sink location for single-uses.

        * gcc.dg/gomp/pr90637.c: New testcase.

        2019-06-21  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR tree-optimization/90930
        * tree-ssa-reassoc.c (rewrite_expr_tree_parallel): Set visited
        flag on new stmts to avoid re-processing them.

        2019-05-15  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR c/90474
        * c-common.c (c_common_mark_addressable_vec): Also mark
        a COMPOUND_LITERAL_EXPR_DECL addressable similar to
        c_mark_addressable.

        2019-04-25  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR middle-end/90194
        * match.pd: Add pattern to simplify view-conversion of an
        empty constructor.

        * g++.dg/torture/pr90194.C: New testcase.

        2019-04-24  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR middle-end/90213
        * gimple-fold.c (fold_const_aggregate_ref_1): Do multiplication
        by size and BITS_PER_UNIT on poly-wide-ints.

        2019-04-15  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR tree-optimization/90071
        * tree-ssa-reassoc.c (init_range_entry): Do not pick up
        abnormal operands from def stmts.

        * gcc.dg/torture/pr90071.c: New testcase.

        2019-03-13  Richard Biener  <rguent...@suse.de  
<mailto:rguenther%40suse.de>>

        PR middle-end/89677
        * tree-scalar-evolution.c (simplify_peeled_chrec): Do not
        throw FP expressions at tree-affine.

        * gcc.dg/torture/pr89677.c: New testcase.


This looks rather familiar, actually.  I seem to recall an SLP degradation from a change to tree-ssa-sink.c on trunk this release.  Richi, could there be a missing backport here?


Bill



Matthias

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