From 2db036a74e64d79cf7f1a23527ed720add2fa4b7 Mon Sep 17 00:00:00 2001 From: Tom de Vries Date: Tue, 22 Nov 2011 20:55:01 +0000 Subject: [PATCH] re PR rtl-optimization/50764 (ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge) 2011-11-22 Tom de Vries PR rtl-optimization/50764 * sched-deps.c (sched_analyze_insn): Make sure frame-related insns are not moved past preceding jump. From-SVN: r181639 --- gcc/ChangeLog | 6 ++++++ gcc/sched-deps.c | 10 ++++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index df9389119fb..4c7eca4d7d9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-11-22 Tom de Vries + + PR rtl-optimization/50764 + * sched-deps.c (sched_analyze_insn): Make sure frame-related insns are + not moved past preceding jump. + 2011-11-22 Jeff Law * doc/contrib.texi: Add entry for David Binderman. diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index a778721d20b..043204a34bc 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -2812,8 +2812,14 @@ sched_analyze_insn (struct deps_desc *deps, rtx x, rtx insn) during prologue generation and avoid marking the frame pointer setup as frame-related at all. */ if (RTX_FRAME_RELATED_P (insn)) - deps->sched_before_next_jump - = alloc_INSN_LIST (insn, deps->sched_before_next_jump); + { + /* Make sure prologue insn is scheduled before next jump. */ + deps->sched_before_next_jump + = alloc_INSN_LIST (insn, deps->sched_before_next_jump); + + /* Make sure epilogue insn is scheduled after preceding jumps. */ + add_dependence_list (insn, deps->pending_jump_insns, 1, REG_DEP_ANTI); + } if (code == COND_EXEC) { -- 2.30.2