[Bug target/17390] missing floating point compare optimization

["pluto at agmk dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #10 from pluto at agmk dot net  2006-05-01 08:05 -------
(In reply to comment #9)
> Created an attachment (id=10666)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10666&action=view) [edit]
> patch to SVN GCC: (GNU) 4.2.0 20060117 (experimental)

this patch ICEs recent x86-64 gcc:

$ ./xgcc -B. -v
Reading specs from ./specs
Target: x86_64-pld-linux
Configured with: ../configure --prefix=/usr --with-local-prefix=/usr/local
--libdir=/usr/lib64 --libexecdir=/usr/lib64 --infodir=/usr/share/info
--mandir=/usr/share/man --x-libraries=/usr/lib64 --enable-shared
--enable-threads=posix --enable-languages=c,c++ --enable-c99 --enable-long-long
--enable-multilib --enable-nls --disable-werror --with-gnu-as --with-gnu-ld
--with-demangler-in-ld --with-system-zlib --with-slibdir=/lib64
--without-system-libunwind --without-x --with-long-double-128
--with-gxx-include-dir=/usr/include/c++/4.2.0 --disable-libstdcxx-pch
--enable-__cxa_atexit --enable-libstdcxx-allocator=new x86_64-pld-linux
Thread model: posix
gcc version 4.2.0 20060428 (experimental) (PLD-Linux)

$ cat T1.c
void test(double x) { if (x > 0.0); }

$ ./xgcc -B. T1.c -m32
T1.c: In function ‘test’:
T1.c:1: internal compiler error: in bsi_last, at tree-flow-inline.h:683

$ cat T2.cpp
struct S { ~S(); };
void bar();
void foo()
{
  S s;
  bar();
}

$ ./xgcc -B. T2.cpp -m32
T2.cpp: In function ‘void foo()’:
T2.cpp:7: internal compiler error: in bsi_last, at tree-flow-inline.h:683


-- 

pluto at agmk dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pluto at agmk dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17390