[r13-5092 Regression] FAIL: gcc.dg/tree-ssa/ssa-dse-46.c (test for excess errors) on Linux/x86_64

[r13-5092 Regression] FAIL: gcc.dg/tree-ssa/ssa-dse-46.c (test for excess errors) on Linux/x86_64

[Jiang, Haochen]

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Hi all,



This is the bisect result for the latest regression which fail to send to mailing list.



It seems that the mail command in s-nail went down after my machine got upgraded, still investigating why.



On Linux/x86_64,



4e0b504f26f78ff02e80ad98ebbf8ded3aa6ffa1 is the first bad commit

commit 4e0b504f26f78ff02e80ad98ebbf8ded3aa6ffa1

Author: Richard Biener <rguenther@suse.de<mailto:rguenther@suse.de>>

Date:   Tue Jan 10 13:48:51 2023 +0100



    tree-optimization/106293 - missed DSE with virtual LC PHI



caused



FAIL: gcc.dg/tree-ssa/ssa-dse-46.c (test for excess errors)



with GCC configured with



../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-5092/usr --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl --enable-libmpx x86_64-linux --disable-bootstrap



To reproduce:



$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/ssa-dse-46.c --target_board='unix{-m32}'"

$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/ssa-dse-46.c --target_board='unix{-m32\ -march=cascadelake}'"



BRs,

Haochen