[r10-8871 Regression] FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578437695752307201" 2 on Linux/x86_64

sunil.k.pandey skpandey@sc.intel.com
Fri Oct 9 07:53:42 GMT 2020


On Linux/x86_64,

e4c9aac98611f63847ef6c57916808d9a2d7abcb is the first bad commit
commit e4c9aac98611f63847ef6c57916808d9a2d7abcb
Author: Martin Sebor <msebor@redhat.com>
Date:   Thu Oct 8 12:35:01 2020 -0600

    Correct handling of constant representations containing embedded nuls (backport from trunk).

caused

FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 1976943448883713" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 576467370915332609" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578431098682540545" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578437695685198337" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578437695752110593" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578437695752306689" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578437695752307200" 1
FAIL: gcc.target/i386/memcpy-pr95886.c scan-rtl-dump-times expand "const_int 578437695752307201" 2

with GCC configured with

Configured with: ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-10/releases/gcc-10/r10-8871/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="i386.exp=gcc.target/i386/memcpy-pr95886.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/memcpy-pr95886.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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