[r12-5546 Regression] FAIL: gcc.dg/tree-ssa/ivopts-9.c scan-tree-dump ivopts "inv_expr [0-9]: \\t\\(unsigned long\\) sz_[0-9]\\(D\\) \\* 4 \\+ \\(unsigned long\\) mem_[0-9]\\(D\\)" on Linux/x86_64

sunil.k.pandey skpandey@sc.intel.com
Fri Nov 26 21:19:47 GMT 2021


On Linux/x86_64,

b41be002eda047093bbf4757cb65ffb4d525cc35 is the first bad commit
commit b41be002eda047093bbf4757cb65ffb4d525cc35
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Fri Nov 26 17:22:10 2021 +0000

    ivopts: Improve code generated for very simple loops.

caused

FAIL: gcc.dg/tree-ssa/ivopts-8.c scan-tree-dump ivopts "inv_expr [0-9]: \\t\\(unsigned long\\) sz_[0-9]*\\(D\\) \\* 4 \\+ \\(unsigned long\\) mem_[0-9]*\\(D\\)"
FAIL: gcc.dg/tree-ssa/ivopts-9.c scan-tree-dump ivopts "inv_expr [0-9]: \\t\\(unsigned long\\) sz_[0-9]\\(D\\) \\* 4 \\+ \\(unsigned long\\) mem_[0-9]\\(D\\)"

with GCC configured with

../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-5546/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/ivopts-8.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/ivopts-8.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/ivopts-9.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/ivopts-9.c --target_board='unix{-m32\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)


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