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* dwarf2out.c (mem_loc_descriptor): Handle shifts. 

From-SVN: r81252
This commit is contained in:
Paul Brook 2004-04-28 15:13:42 +00:00 committed by Paul Brook
parent f0e6f84591
commit 40f0b3eeab
2 changed files with 24 additions and 3 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2004-04-28 Paul Brook <paul@codesourcery.com>
* dwarf2out.c (mem_loc_descriptor): Handle shifts.
2004-04-28 Ulrich Weigand <uweigand@de.ibm.com>
* gcse.c (find_moveable_store): Do not accept store insns with

23
gcc/dwarf2out.c
View File

@ -8435,6 +8435,7 @@ static dw_loc_descr_ref
mem_loc_descriptor (rtx rtl, enum machine_mode mode, bool can_use_fbreg)
{
dw_loc_descr_ref mem_loc_result = NULL;
enum dwarf_location_atom op;
/* Note that for a dynamically sized array, the location we will generate a
description of here will be the lowest numbered location which is
@ -8576,10 +8577,26 @@ mem_loc_descriptor (rtx rtl, enum machine_mode mode, bool can_use_fbreg)
}
break;
/* If a pseudo-reg is optimized away, it is possible for it to
be replaced with a MEM containing a multiply or shift. */
case MULT:
op = DW_OP_mul;
goto do_binop;
case ASHIFT:
op = DW_OP_shl;
goto do_binop;
case ASHIFTRT:
op = DW_OP_shra;
goto do_binop;
case LSHIFTRT:
op = DW_OP_shr;
goto do_binop;
do_binop:
{
/* If a pseudo-reg is optimized away, it is possible for it to
be replaced with a MEM containing a multiply. */
dw_loc_descr_ref op0 = mem_loc_descriptor (XEXP (rtl, 0), mode,
can_use_fbreg);
dw_loc_descr_ref op1 = mem_loc_descriptor (XEXP (rtl, 1), mode,
@ -8590,7 +8607,7 @@ mem_loc_descriptor (rtx rtl, enum machine_mode mode, bool can_use_fbreg)
mem_loc_result = op0;
add_loc_descr (&mem_loc_result, op1);
add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0));
add_loc_descr (&mem_loc_result, new_loc_descr (op, 0, 0));
break;
}