re PR rtl-optimization/34999 (Incorrect FDE entries with hot/cold code section…

re PR rtl-optimization/34999 (Incorrect FDE entries with hot/cold code section splitting (partition_hot_cold_basic_blocks))

	PR rtl-optimization/34999
	* dwarf2out.c (struct dw_fde_struct): Add dw_fde_switch_cfi
	and dw_fde_switched_cold_to_hot fields.
	(output_cfi_p): New function.
	(output_call_frame_info): If fde->dw_fde_switched_sections,
	output 2 FDEs instead of one with corrupted header.
	(dwarf2out_do_cfi_startproc): New function.
	(dwarf2out_begin_prologue): Use it.  Initialize fde->dw_fde_switch_cfi
	and fde->dw_fde_switched_cold_to_hot.
	(dwarf2out_switch_text_section): Compute
	fde->dw_fde_switched_cold_to_hot.  Switch to new text section here.
	If dwarf2out_do_cfi_asm, emit .cfi_endproc before it and call
	dwarf2out_do_cfi_startproc plus emit again currently active CFI insns.
	Otherwise, compute fde->dw_fde_switch_cfi.

From-SVN: r150069

gcc/ChangeLog

+2009-07-25  Jakub Jelinek  <jakub@redhat.com>
+
+	PR rtl-optimization/34999
+	* dwarf2out.c (struct dw_fde_struct): Add dw_fde_switch_cfi
+	and dw_fde_switched_cold_to_hot fields.
+	(output_cfi_p): New function.
+	(output_call_frame_info): If fde->dw_fde_switched_sections,
+	output 2 FDEs instead of one with corrupted header.
+	(dwarf2out_do_cfi_startproc): New function.
+	(dwarf2out_begin_prologue): Use it.  Initialize fde->dw_fde_switch_cfi
+	and fde->dw_fde_switched_cold_to_hot.
+	(dwarf2out_switch_text_section): Compute
+	fde->dw_fde_switched_cold_to_hot.  Switch to new text section here.
+	If dwarf2out_do_cfi_asm, emit .cfi_endproc before it and call
+	dwarf2out_do_cfi_startproc plus emit again currently active CFI insns.
+	Otherwise, compute fde->dw_fde_switch_cfi.
+
 2009-07-24  Cary Coutant  <ccoutant@google.com>
 
 	* tree-cfg.c (assign_discriminator): Add explicit parentheses.