ICE: APCS Frame & optimize-sibling-calls

[Takashi Igarashi]

gcc-linaro-arm-linux-gnueabihf-4.8-2013.12_linux.tar.gz

------------------ test.c ---------------------
extern void baz(int);

static int i;

void bar()
{
    baz(i);
}
--------------------------------------------------
$ arm-linux-gnieabihf-gcc -O2 -g -mapcs-frame -fno-omit-frame-pointer -marm -c test.c
test.c: In function 'bar':
test.c:8:1: internal Conpiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1078
 }
 ^
no stack trace because unwind library not available

[Zhenqiang Chen (zhenqiang-chen)]

Thanks for the bug report.

The root cause for the issue is that when enabling shrink-wrap I add some CFA_ADJUST_CFA note to make the dwarf info check work. But for APCS_FRAME, dwarf info is not fully updated.

I am fixing it. To workaround it, remove option "-g".