On Wed, Aug 1, 2012 at 7:10 AM, H.J. Lu <hjl.to...@gmail.com> wrote:
> On Sat, Apr 28, 2012 at 8:11 AM, H.J. Lu <hongjiu...@intel.com> wrote:
>> Hi,
>>
>> arg_pointer and frame_pointer are handled as special cases in
>> based_loc_descr.
>>
>> (plus:DI (reg/f:DI 16 argp)
>> (const_int -20 [0xffffffffffffffec]))
>>
>> is perfectly valid when Pmode == DImode and DWARF2_ADDR_SIZE is 32bit
>> with ptr_mode == SImode. This patch fixes ICE on the 2 testcases here.
>> OK for trunk?
>>
>> Thanks.
>>
>>
>> H.J.
>> ----
>> gcc/
>>
>> 2012-04-06 H.J. Lu <hongjiu...@intel.com>
>>
>> PR debug/52857
>> * dwarf2out.c (mem_loc_descriptor): Allow arg_pointer_rtx and
>> frame_pointer_rtx for based_loc_descr.
>>
>> gcc/testsuite/
>>
>> 2012-04-06 H.J. Lu <hongjiu...@intel.com>
>>
>> PR debug/52857
>> * gcc.target/i386/pr52857-1.c: New.
>> * gcc.target/i386/pr52857-2.c: Likewise.
>>
>> diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
>> index ca88fc5..515a824 100644
>> --- a/gcc/dwarf2out.c
>> +++ b/gcc/dwarf2out.c
>> @@ -11655,6 +11657,8 @@ mem_loc_descriptor (rtx rtl, enum machine_mode mode,
>> case REG:
>> if (GET_MODE_CLASS (mode) != MODE_INT
>> || (GET_MODE_SIZE (mode) > DWARF2_ADDR_SIZE
>> + && rtl != arg_pointer_rtx
>> + && rtl != frame_pointer_rtx
>> #ifdef POINTERS_EXTEND_UNSIGNED
>> && (mode != Pmode || mem_mode == VOIDmode)
>> #endif
>> @@ -11927,7 +11931,9 @@ mem_loc_descriptor (rtx rtl, enum machine_mode mode,
>> case PLUS:
>> plus:
>> if (is_based_loc (rtl)
>> - && GET_MODE_SIZE (mode) <= DWARF2_ADDR_SIZE
>> + && (GET_MODE_SIZE (mode) <= DWARF2_ADDR_SIZE
>> + || XEXP (rtl, 0) == arg_pointer_rtx
>> + || XEXP (rtl, 0) == frame_pointer_rtx)
>> && GET_MODE_CLASS (mode) == MODE_INT)
>> mem_loc_result = based_loc_descr (XEXP (rtl, 0),
>> INTVAL (XEXP (rtl, 1)),
>> diff --git a/gcc/testsuite/gcc.target/i386/pr52857-1.c
>> b/gcc/testsuite/gcc.target/i386/pr52857-1.c
>> new file mode 100644
>> index 0000000..16fd78f
>> --- /dev/null
>> +++ b/gcc/testsuite/gcc.target/i386/pr52857-1.c
>> @@ -0,0 +1,10 @@
>> +/* { dg-do compile { target { ! { ia32 } } } } */
>> +/* { dg-options "-g -O -mx32 -maddress-mode=long" } */
>> +
>> +extern void get_BID128 (int *);
>> +void
>> +__bid128_div (void)
>> +{
>> + int res;
>> + get_BID128 (&res);
>> +}
>> diff --git a/gcc/testsuite/gcc.target/i386/pr52857-2.c
>> b/gcc/testsuite/gcc.target/i386/pr52857-2.c
>> new file mode 100644
>> index 0000000..879240a
>> --- /dev/null
>> +++ b/gcc/testsuite/gcc.target/i386/pr52857-2.c
>> @@ -0,0 +1,8 @@
>> +/* { dg-do compile { target { ! { ia32 } } } } */
>> +/* { dg-options "-g -O -mx32 -maddress-mode=long" } */
>> +
>> +void uw_init_context_1 (void *);
>> +void _Unwind_ForcedUnwind (void)
>> +{
>> + uw_init_context_1 (__builtin_dwarf_cfa ());
>> +}
>
> PING.
>
PING.
--
H.J.
