From 8e7816b4663fa7cade055ace845703ef99451456 Mon Sep 17 00:00:00 2001 From: Andrey Belevantsev Date: Mon, 21 Mar 2016 10:52:05 +0300 Subject: [PATCH] re PR rtl-optimization/69102 (ICE: in move_op_ascend, at sel-sched.c:6138 with -fselective-scheduling2) gcc/ PR rtl-optimization/69102 * sched-deps.c (sched_analyze_insn): Do not set last_args_size field when we have a readonly dependency context. testsuite/ PR rtl-optimization/69102 * gcc.c-torture/compile/pr69102.c: New test. From-SVN: r234359 --- gcc/ChangeLog | 6 ++++++ gcc/sched-deps.c | 3 ++- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.c-torture/compile/pr69102.c | 21 +++++++++++++++++++++ 4 files changed, 34 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.c-torture/compile/pr69102.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6f52c2d..f4431a0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2016-03-21 Andrey Belevantsev + + PR rtl-optimization/69102 + * sched-deps.c (sched_analyze_insn): Do not set last_args_size field + when we have a readonly dependency context. + 2016-03-18 Jeff Law PR rtl-optimization/70263 diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index 5cc8e63..8f3a124 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -3495,7 +3495,8 @@ sched_analyze_insn (struct deps_desc *deps, rtx x, rtx_insn *insn) { if (deps->last_args_size) add_dependence (insn, deps->last_args_size, REG_DEP_OUTPUT); - deps->last_args_size = insn; + if (!deps->readonly) + deps->last_args_size = insn; } } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c043b4b..ab1b25a 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-03-21 Andrey Belevantsev + + PR rtl-optimization/69102 + * gcc.c-torture/compile/pr69102.c: New test. + 2016-03-18 Jeff Law PR rtl-optimization/70263 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr69102.c b/gcc/testsuite/gcc.c-torture/compile/pr69102.c new file mode 100644 index 0000000..b1328ca --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr69102.c @@ -0,0 +1,21 @@ +/* { dg-options "-Og -fPIC -fschedule-insns2 -fselective-scheduling2 -fno-tree-fre --param=max-sched-extend-regions-iters=10" } */ +void bar (unsigned int); + +void +foo (void) +{ + char buf[1] = { 3 }; + const char *p = buf; + const char **q = &p; + unsigned int ch; + switch (**q) + { + case 1: ch = 5; break; + case 2: ch = 4; break; + case 3: ch = 3; break; + case 4: ch = 2; break; + case 5: ch = 1; break; + default: ch = 0; break; + } + bar (ch); +} -- 2.7.4