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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/59747] [4.9 Regression] wrong code at -Os and above on x86_64-linux-gnu in 64-bit mode
Date: Thu, 16 Jan 2014 20:11:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59747

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
On x86_64-apple-darwin13 at r206658, configured with

 ../p_work/configure --prefix=/opt/gcc/gcc4.9p-206658p1a
--enable-languages=c,c++,lto,fortran,ada,objc,obj-c++ --with-gmp=/opt/mp
--with-system-zlib --enable-checking=release --with-isl=/opt/mp --enable-lto
--enable-plugin --with-arch=corei7 --with-cpu=corei7

I get for -m32 and -m64:

FAIL: gcc.c-torture/execute/pr59747.c execution,  -O0 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -O1 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -O2 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -O3 -fomit-frame-pointer 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -O3 -g 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -Os 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -Og -g 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -O2 -flto
-flto-partition=none 
FAIL: gcc.c-torture/execute/pr59747.c execution,  -O2 -flto 

I'll attach the preprocessed and assembly files compiled without option. Note
that I get the same files when compiling with gcc r206567 and the test still
fails with the changes at r206659.