From 8845deabba0fa4aec0200e4ed310bf6b489ed1fc Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Tue, 9 Jun 2009 00:39:32 +0200 Subject: [PATCH] dwarf2out.c (emit_cfa_remember): New variable. * dwarf2out.c (emit_cfa_remember): New variable. (add_fde_cfi): If emit_cfa_remember, recurse to add DW_CFA_remember_state first. (dwarf2out_begin_epilogue): Don't add_fde_cfi DW_CFA_remember_state, instead just set emit_cfa_remember. From-SVN: r148298 --- gcc/ChangeLog | 8 ++++++++ gcc/dwarf2out.c | 24 ++++++++++++++++++------ 2 files changed, 26 insertions(+), 6 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 940e7573f4b..8c3c6f359f6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2009-06-08 Jakub Jelinek + + * dwarf2out.c (emit_cfa_remember): New variable. + (add_fde_cfi): If emit_cfa_remember, recurse to add + DW_CFA_remember_state first. + (dwarf2out_begin_epilogue): Don't add_fde_cfi DW_CFA_remember_state, + instead just set emit_cfa_remember. + 2009-06-08 Jan Hubicka PR debug/40126 diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index dc82799a9bc..2483a7b3797 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -717,13 +717,29 @@ dwarf2out_cfi_label (bool force) return label; } +/* True if remember_state should be emitted before following CFI directive. */ +static bool emit_cfa_remember; + /* Add CFI to the current fde at the PC value indicated by LABEL if specified, or to the CIE if LABEL is NULL. */ static void add_fde_cfi (const char *label, dw_cfi_ref cfi) { - dw_cfi_ref *list_head = &cie_cfi_head; + dw_cfi_ref *list_head; + + if (emit_cfa_remember) + { + dw_cfi_ref cfi_remember; + + /* Emit the state save. */ + emit_cfa_remember = false; + cfi_remember = new_cfi (); + cfi_remember->dw_cfi_opc = DW_CFA_remember_state; + add_fde_cfi (label, cfi_remember); + } + + list_head = &cie_cfi_head; if (dwarf2out_do_cfi_asm ()) { @@ -2709,7 +2725,6 @@ dwarf2out_begin_epilogue (rtx insn) { bool saw_frp = false; rtx i; - dw_cfi_ref cfi; /* Scan forward to the return insn, noticing if there are possible frame related insns. */ @@ -2755,10 +2770,7 @@ dwarf2out_begin_epilogue (rtx insn) } emit_note_before (NOTE_INSN_CFA_RESTORE_STATE, i); - /* Emit the state save. */ - cfi = new_cfi (); - cfi->dw_cfi_opc = DW_CFA_remember_state; - add_fde_cfi (dwarf2out_cfi_label (false), cfi); + emit_cfa_remember = true; /* And emulate the state save. */ gcc_assert (!cfa_remember.in_use); -- 2.30.2