[Bug c/42483] New: AVR fails all whopr/lto tests

[hutchinsonandy at gcc dot gnu dot org]

When LTO is enabled AVR fails all whopr/lto tests:

Testsuite fails all lto/whopr tests:

Example:


Executing on host: /media/verbatim/gcchead/obj-dir/gcc/xgcc
-B/media/verbatim/gcchead/obj-dir/gcc/
/media/verbatim/gcchead/trunk/gcc/testsuite/gcc.c-torture/execute/builtins/abs-1.c
/media/verbatim/gcchead/trunk/gcc/testsuite/gcc.c-torture/execute/builtins/abs-1-lib.c
/media/verbatim/gcchead/trunk/gcc/testsuite/gcc.c-torture/execute/builtins/lib/main.c
 -w  -O2 -flto  -fno-builtin-abs -DSTACK_SIZE=2048 -DNO_TRAMPOLINES 
-DSIGNAL_SUPPRESS -mmcu=atmega128 
/home/andy/winavrfiles/avrtest/dejagnuboards/exit.c -Wl,-u,vfprintf
-lprintf_flt -Wl,-Tbss=0x802000,--defsym=__heap_end=0x80ffff  -lm   -o
/media/verbatim/gcchead/obj-dir/gcc/testsuite/gcc/abs-1.x6    (timeout = 300)
spawn /media/verbatim/gcchead/obj-dir/gcc/xgcc
-B/media/verbatim/gcchead/obj-dir/gcc/
/media/verbatim/gcchead/trunk/gcc/testsuite/gcc.c-torture/execute/builtins/abs-1.c
/media/verbatim/gcchead/trunk/gcc/testsuite/gcc.c-torture/execute/builtins/abs-1-lib.c
/media/verbatim/gcchead/trunk/gcc/testsuite/gcc.c-torture/execute/builtins/lib/main.c
-w -O2 -flto -fno-builtin-abs -DSTACK_SIZE=2048 -DNO_TRAMPOLINES
-DSIGNAL_SUPPRESS -mmcu=atmega128
/home/andy/winavrfiles/avrtest/dejagnuboards/exit.c -Wl,-u,vfprintf
-lprintf_flt -Wl,-Tbss=0x802000,--defsym=__heap_end=0x80ffff -lm -o
/media/verbatim/gcchead/obj-dir/gcc/testsuite/gcc/abs-1.x6
/home/andy/local/avr/lib/gcc/avr/4.5.0/../../../../avr/bin/ld: -f may not be
used without -shared
compiler exited with status 1
output is:
/home/andy/local/avr/lib/gcc/avr/4.5.0/../../../../avr/bin/ld: -f may not be
used without -shared

FAIL: gcc.c-torture/execute/builtins/abs-1.c compilation,  -O2 -flto 


Note LTO was built using patch from

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42457


-- 
           Summary: AVR fails all whopr/lto tests
           Product: gcc
           Version: lto
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hutchinsonandy at gcc dot gnu dot org
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: avr-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42483