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| author | Jakub Jelinek <jakub@redhat.com> | 2011-11-30 19:58:33 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-11-30 19:58:33 +0100 |
| commit | 9790c19e52e65814d6c738fe0e31e25e93f3f4cb (patch) | |
| tree | b012a9176a0eb8f03b8418352923cbab330b8e56 /gcc/sched-deps.c | |
| parent | bbf81a5faed795d45e982363b9807cd7de74ce49 (diff) | |
| download | gcc-9790c19e52e65814d6c738fe0e31e25e93f3f4cb.zip gcc-9790c19e52e65814d6c738fe0e31e25e93f3f4cb.tar.gz gcc-9790c19e52e65814d6c738fe0e31e25e93f3f4cb.tar.bz2 | |
re PR rtl-optimization/48721 (ICE: verify_flow_info failed: missing barrier after block 6 with -foptimize-sibling-calls -fsched2-use-superblocks)
PR rtl-optimization/48721
* sched-deps.c (sched_analyze_insn): For SIBLING_CALL_P set
reg_pending_barrier to TRUE_BARRIER.
* gcc.target/i386/pr48721.c: New test.
From-SVN: r181856
Diffstat (limited to 'gcc/sched-deps.c')
| -rw-r--r-- | gcc/sched-deps.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index 043204a..af2892d 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -2873,7 +2873,11 @@ sched_analyze_insn (struct deps_desc *deps, rtx x, rtx insn) else sched_analyze_2 (deps, XEXP (link, 0), insn); } - if (find_reg_note (insn, REG_SETJMP, NULL)) + /* Don't schedule anything after a tail call, tail call needs + to use at least all call-saved registers. */ + if (SIBLING_CALL_P (insn)) + reg_pending_barrier = TRUE_BARRIER; + else if (find_reg_note (insn, REG_SETJMP, NULL)) reg_pending_barrier = MOVE_BARRIER; } |