[Bug rtl-optimization/30931] Simple test case loops infinitely with -O1 -fstrength-reduce.

[bergner at gcc dot gnu dot org]

------- Comment #6 from bergner at gcc dot gnu dot org  2007-02-23 14:06 -------
Here's the output you asked for using the latest 4.1 sources I built yesterday.
This also fails for me using the system compilers on Ubuntu Edgy and SLES10.
I'll try and track down a x86 RHEL5 system to test there too.

Please note it's not the compiler that is looping forever, but the built binary
when executed.

bg47:bergner% ./install/gcc-4.1/bin/gcc -O1 -fstrength-reduce pr30311.c -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../../gcc-4_1-20070222/configure --enable-shared
--enable-threads=posix --enable-checking --enable-languages=c
--prefix=/tmp/bergner/install/gcc-4.1
Thread model: posix
gcc version 4.1.3 20070222 (prerelease)
 /tmp/bergner/install/gcc-4.1/libexec/gcc/i686-pc-linux-gnu/4.1.3/cc1 -quiet -v
pr30311.c -quiet -dumpbase pr30311.c -mtune=pentiumpro -auxbase pr30311 -O1
-version -fstrength-reduce -o /tmp/cc6Cx7Y6.s
ignoring nonexistent directory
"/tmp/bergner/install/gcc-4.1/lib/gcc/i686-pc-linux-gnu/4.1.3/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /tmp/bergner/install/gcc-4.1/include
 /tmp/bergner/install/gcc-4.1/lib/gcc/i686-pc-linux-gnu/4.1.3/include
 /usr/include
End of search list.
GNU C version 4.1.3 20070222 (prerelease) (i686-pc-linux-gnu)
        compiled by GNU C version 3.4.4 20050721 (Red Hat 3.4.4-2).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 3c763771770d7626aeca3ba678fea9f5
 as -V -Qy -o /tmp/ccmkRFA6.o /tmp/cc6Cx7Y6.s
GNU assembler version 2.15.92.0.2 (i386-redhat-linux) using BFD version
2.15.92.0.2 20040927
 /tmp/bergner/install/gcc-4.1/libexec/gcc/i686-pc-linux-gnu/4.1.3/collect2
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o
/usr/lib/crti.o
/tmp/bergner/install/gcc-4.1/lib/gcc/i686-pc-linux-gnu/4.1.3/crtbegin.o
-L/tmp/bergner/install/gcc-4.1/lib/gcc/i686-pc-linux-gnu/4.1.3
-L/tmp/bergner/install/gcc-4.1/lib/gcc/i686-pc-linux-gnu/4.1.3/../../..
/tmp/ccmkRFA6.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed
-lgcc_s --no-as-needed
/tmp/bergner/install/gcc-4.1/lib/gcc/i686-pc-linux-gnu/4.1.3/crtend.o
/usr/lib/crtn.o


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30931