Haiku/buildtools
1
0
Fork 0
mirror of https://review.haiku-os.org/buildtools synced 2025-02-22 05:37:44 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

[backported from gcc-3.4]

Browse Source 
give proper error messages for invalid asm instead of ICEing (at least in
   non-optimizing mode).


git-svn-id: file:///srv/svn/repos/haiku/trunk/buildtools@9611 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Oliver Tappe 2004-10-28 18:29:45 +00:00
parent 1e55f532cb
commit ac90974173
1 changed files with 43 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
gcc/gcc/function.c
View File

@ -2303,7 +2303,23 @@ fixup_var_refs_1 (var, promoted_mode, loc, insn, replacements)
replacement = find_fixup_replacement (replacements, x);
if (replacement->new)
{
enum machine_mode mode = GET_MODE (x);
*loc = replacement->new;
/* Careful! We may have just replaced a SUBREG by a MEM, which
means that the insn may have become invalid again. We can't
in this case make a new replacement since we already have one
and we must deal with MATCH_DUPs. */
if (GET_CODE (replacement->new) == MEM)
{
INSN_CODE (insn) = -1;
if (recog_memoized (insn) >= 0)
return;
fixup_var_refs_1 (replacement->new, mode, &PATTERN (insn),
insn, replacements);
}
return;
}
@ -3715,6 +3731,23 @@ instantiate_decl (x, size, valid_only)
XEXP (x, 0) = addr;
}
/* Called when instantiate_virtual_regs has failed to update the instruction.
Usually this means that non-matching instruction has been emit, however for
asm statements it may be the problem in the constraints. */
/* [zooey]: backported this (and calls to it) from gcc-3.4 in order to
give proper error messages for invalid asm instead of ICEing. */
static void
instantiate_virtual_regs_lossage (rtx insn)
{
if (asm_noperands (PATTERN (insn)) >= 0)
{
error_for_asm (insn, "impossible constraint in `asm'");
delete_insn (insn);
}
else
abort ();
}
/* Given a pointer to a piece of rtx and an optional pointer to the
containing object, instantiate any virtual registers present in it.
@ -3791,7 +3824,10 @@ instantiate_virtual_regs_1 (loc, object, extra_insns)
the simplest possible thing to handle them. */
if (GET_CODE (SET_SRC (x)) != REG
&& GET_CODE (SET_SRC (x)) != PLUS)
abort ();
{
instantiate_virtual_regs_lossage (object);
return 1;
}
start_sequence ();
if (GET_CODE (SET_SRC (x)) != REG)
@ -3807,7 +3843,7 @@ instantiate_virtual_regs_1 (loc, object, extra_insns)
if (! validate_change (object, &SET_SRC (x), temp, 0)
|| ! extra_insns)
abort ();
instantiate_virtual_regs_lossage (object);
return 1;
}
@ -3920,7 +3956,10 @@ instantiate_virtual_regs_1 (loc, object, extra_insns)
emit_insns_before (seq, object);
if (! validate_change (object, loc, temp, 0)
&& ! validate_replace_rtx (x, temp, object))
abort ();
{
instantiate_virtual_regs_lossage (object);
return 1;
}
}
}
@ -4084,7 +4123,7 @@ instantiate_virtual_regs_1 (loc, object, extra_insns)
emit_insns_before (seq, object);
if (! validate_change (object, loc, temp, 0)
&& ! validate_replace_rtx (x, temp, object))
abort ();
instantiate_virtual_regs_lossage (object);
}
}