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| author | Rong Xu <xur@gcc.gnu.org> | 2014-11-14 00:30:31 +0000 |
|---|---|---|
| committer | Rong Xu <xur@gcc.gnu.org> | 2014-11-14 00:30:31 +0000 |
| commit | 0fb3402f691447225a17f83d1ef168eb71a25ce0 (patch) | |
| tree | a2d90d71efdd31c74e3e6708927cf8f6f80dd80b /gcc/cfgrtl.c | |
| parent | 6ff65dd7d59139e120d1dcdb54d5a5bb0d07e2c0 (diff) | |
| download | gcc-0fb3402f691447225a17f83d1ef168eb71a25ce0.tar.gz | |
re PR debug/63581 (undefined references in debug_info)
2014-11-13 Rong Xu <xur@google.com>
gcc:
PR debug/63581
* cfgrtl.c (emit_barrier_after_bb): Append the barrier to the
footer, instead of unconditionally overwritten
gcc/testsuite:
PR debug/63581
* g++.dg/tree-prof/pr63581.C: New test.
From-SVN: r217530
Diffstat (limited to 'gcc/cfgrtl.c')
| -rw-r--r-- | gcc/cfgrtl.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c index f6eb2072d11..42d21d72201 100644 --- a/gcc/cfgrtl.c +++ b/gcc/cfgrtl.c @@ -1461,7 +1461,24 @@ emit_barrier_after_bb (basic_block bb) gcc_assert (current_ir_type () == IR_RTL_CFGRTL || current_ir_type () == IR_RTL_CFGLAYOUT); if (current_ir_type () == IR_RTL_CFGLAYOUT) - BB_FOOTER (bb) = unlink_insn_chain (barrier, barrier); + { + rtx_insn *insn = unlink_insn_chain (barrier, barrier); + + if (BB_FOOTER (bb)) + { + rtx_insn *footer_tail = BB_FOOTER (bb); + + while (NEXT_INSN (footer_tail)) + footer_tail = NEXT_INSN (footer_tail); + if (!BARRIER_P (footer_tail)) + { + SET_NEXT_INSN (footer_tail) = insn; + SET_PREV_INSN (insn) = footer_tail; + } + } + else + BB_FOOTER (bb) = insn; + } } /* Like force_nonfallthru below, but additionally performs redirection |