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dwarf2cfi: Reset args_size properly across abnormal edges. 

* dwarf2cfi.c (maybe_record_trace_start): Add abnormal parameter.
        Zero args_size for abnormal edges.  Adjust all callers.

From-SVN: r176727
This commit is contained in:
Richard Henderson 2011-07-24 20:10:42 -07:00 committed by Richard Henderson
parent 2edb462ee4
commit 2f23f97acc
2 changed files with 18 additions and 8 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2011-07-24 Richard Henderson <rth@redhat.com>
* dwarf2cfi.c (maybe_record_trace_start): Add abnormal parameter.
Zero args_size for abnormal edges. Adjust all callers.
2011-07-24 Richard Henderson <rth@redhat.com>
PR debug/49825

21
gcc/dwarf2cfi.c
View File

@ -2396,7 +2396,7 @@ add_cfis_to_fde (void)
trace from CUR_TRACE and CUR_ROW. */
static void
maybe_record_trace_start (rtx start, rtx origin)
maybe_record_trace_start (rtx start, rtx origin, bool abnormal)
{
dw_trace_info *ti;
@ -2421,6 +2421,11 @@ maybe_record_trace_start (rtx start, rtx origin)
/* This is the first time we've encountered this trace. Propagate
state across the edge and push the trace onto the work list. */
ti->beg_row = copy_cfi_row (cur_row);
/* On all abnormal edges, especially EH and non-local-goto, we take
care to free the pushed arguments. */
if (abnormal)
ti->beg_row->args_size = 0;
ti->cfa_store = cur_trace->cfa_store;
ti->cfa_temp = cur_trace->cfa_temp;
ti->regs_saved_in_regs = VEC_copy (reg_saved_in_data, heap,
@ -2465,13 +2470,13 @@ create_trace_edges (rtx insn)
for (i = 0; i < n; ++i)
{
lab = XEXP (RTVEC_ELT (vec, i), 0);
maybe_record_trace_start (lab, insn);
maybe_record_trace_start (lab, insn, false);
}
}
else if (computed_jump_p (insn))
{
for (lab = forced_labels; lab; lab = XEXP (lab, 1))
maybe_record_trace_start (XEXP (lab, 0), insn);
maybe_record_trace_start (XEXP (lab, 0), insn, true);
}
else if (returnjump_p (insn))
;
@ -2481,14 +2486,14 @@ create_trace_edges (rtx insn)
for (i = 0; i < n; ++i)
{
lab = XEXP (ASM_OPERANDS_LABEL (tmp, i), 0);
maybe_record_trace_start (lab, insn);
maybe_record_trace_start (lab, insn, true);
}
}
else
{
lab = JUMP_LABEL (insn);
gcc_assert (lab != NULL);
maybe_record_trace_start (lab, insn);
maybe_record_trace_start (lab, insn, false);
}
}
else if (CALL_P (insn))
@ -2500,7 +2505,7 @@ create_trace_edges (rtx insn)
/* Process non-local goto edges. */
if (can_nonlocal_goto (insn))
for (lab = nonlocal_goto_handler_labels; lab; lab = XEXP (lab, 1))
maybe_record_trace_start (XEXP (lab, 0), insn);
maybe_record_trace_start (XEXP (lab, 0), insn, true);
}
/* Process EH edges. */
@ -2508,7 +2513,7 @@ create_trace_edges (rtx insn)
{
eh_landing_pad lp = get_eh_landing_pad_from_rtx (insn);
if (lp)
maybe_record_trace_start (lp->landing_pad, insn);
maybe_record_trace_start (lp->landing_pad, insn, true);
}
}
@ -2545,7 +2550,7 @@ scan_trace (dw_trace_info *trace)
/* Propagate across fallthru edges. */
if (!BARRIER_P (insn))
maybe_record_trace_start (insn, NULL);
maybe_record_trace_start (insn, NULL, false);
break;
}