https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68671
Bug ID: 68671
Summary: [5/6 Regression] gcc.dg/torture/pr66952.c FAILs with
-fno-tree-dce
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36895
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36895&action=edit
reduced testcase withouth UB
For armv7a, aarch64, powerpc, powerpc64 targets (tested in QEMU) (x86_64 is
OK), the testcase fails:
$ $CC -O2 -fno-tree-dce
$ ./a.out
Aborted
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-231194-checking-yes-rtl-df-nographite-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/6.0.0/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--with-float=hard --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as
--with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-231194-checking-yes-rtl-df-nographite-armv7a-hardfloat
Thread model: posix
gcc version 6.0.0 20151202 (experimental) (GCC)
