From bf95b6295ca8a76eec569791cfa3c8de19513204 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Thu, 17 Jul 2014 07:47:19 +0000 Subject: [PATCH] re PR rtl-optimization/61801 (sched2 miscompiles syscall sequence with -g) 2014-07-17 Richard Biener PR rtl-optimization/61801 * sched-deps.c (sched_analyze_2): For ASM_OPERANDS and ASM_INPUT don't set reg_pending_barrier if it appears in a debug-insn. From-SVN: r212738 --- gcc/ChangeLog | 7 +++++++ gcc/sched-deps.c | 3 ++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c938206a8c9..ee335f2176e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-07-17 Richard Biener + + PR rtl-optimization/61801 + * sched-deps.c (sched_analyze_2): For ASM_OPERANDS and + ASM_INPUT don't set reg_pending_barrier if it appears in a + debug-insn. + 2014-07-16 DJ Delorie * config/rx/rx.c (rx_option_override): Fix alignment values. diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index 7cafc8bb00b..d2715213962 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -2750,7 +2750,8 @@ sched_analyze_2 (struct deps_desc *deps, rtx x, rtx insn) Consider for instance a volatile asm that changes the fpu rounding mode. An insn should not be moved across this even if it only uses pseudo-regs because it might give an incorrectly rounded result. */ - if (code != ASM_OPERANDS || MEM_VOLATILE_P (x)) + if ((code != ASM_OPERANDS || MEM_VOLATILE_P (x)) + && !DEBUG_INSN_P (insn)) reg_pending_barrier = TRUE_BARRIER; /* For all ASM_OPERANDS, we must traverse the vector of input operands.