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[PATCH 6/9] sel-sched: Don't mess with register restores
- From: Segher Boessenkool <segher at kernel dot crashing dot org>
- To: gcc-patches at gcc dot gnu dot org
- Cc: dje dot gcc at gmail dot com, Segher Boessenkool <segher at kernel dot crashing dot org>
- Date: Wed, 8 Jun 2016 01:47:37 +0000
- Subject: [PATCH 6/9] sel-sched: Don't mess with register restores
- Authentication-results: sourceware.org; auth=none
- References: <cover dot 1465347472 dot git dot segher at kernel dot crashing dot org>
- References: <cover dot 1465347472 dot git dot segher at kernel dot crashing dot org>
If selective scheduling copies register restores it confuses dwarf2cfi.
2016-06-07 Segher Boessenkool <segher@kernel.crashing.org>
* sel-sched-ir.c (init_global_and_expr_for_insn): Don't copy
instructions with a REG_CFA_RESTORE note.
---
gcc/sel-sched-ir.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c
index 83f813a..4a3984a 100644
--- a/gcc/sel-sched-ir.c
+++ b/gcc/sel-sched-ir.c
@@ -3015,6 +3015,7 @@ init_global_and_expr_for_insn (insn_t insn)
/* TRAP_IF though have an INSN code is control_flow_insn_p (). */
|| control_flow_insn_p (insn)
|| volatile_insn_p (PATTERN (insn))
+ || find_reg_note (insn, REG_CFA_RESTORE, NULL)
|| (targetm.cannot_copy_insn_p
&& targetm.cannot_copy_insn_p (insn)))
force_unique_p = true;
--
1.9.3