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| author | Jakub Jelinek <jakub@redhat.com> | 2018-12-14 00:33:57 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-12-14 00:33:57 +0100 |
| commit | b532a7859f749a302748214a75d565a8f7b90358 (patch) | |
| tree | 33c7c59992c9696d1428e3caafe762ef59ddb454 /gcc/cfgcleanup.c | |
| parent | 6bb4268527df596e72a964f94873162b595fb483 (diff) | |
| download | gcc-b532a7859f749a302748214a75d565a8f7b90358.zip gcc-b532a7859f749a302748214a75d565a8f7b90358.tar.gz gcc-b532a7859f749a302748214a75d565a8f7b90358.tar.bz2 | |
re PR rtl-optimization/88470 (ICE in maybe_record_trace_start, at dwarf2cfi.c:2354)
PR rtl-optimization/88470
* cfgcleanup.c (outgoing_edges_match): If the function is
shrink-wrapped and bb1 ends with a JUMP_INSN with a single fake
edge to EXIT, return false.
* gcc.target/i386/pr88470.c: New test.
From-SVN: r267112
Diffstat (limited to 'gcc/cfgcleanup.c')
| -rw-r--r-- | gcc/cfgcleanup.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index bc4a788..1b5e931 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -1592,10 +1592,13 @@ outgoing_edges_match (int mode, basic_block bb1, basic_block bb2) if (crtl->shrink_wrapped && single_succ_p (bb1) && single_succ (bb1) == EXIT_BLOCK_PTR_FOR_FN (cfun) - && !JUMP_P (BB_END (bb1)) + && (!JUMP_P (BB_END (bb1)) + /* Punt if the only successor is a fake edge to exit, the jump + must be some weird one. */ + || (single_succ_edge (bb1)->flags & EDGE_FAKE) != 0) && !(CALL_P (BB_END (bb1)) && SIBLING_CALL_P (BB_END (bb1)))) return false; - + /* If BB1 has only one successor, we may be looking at either an unconditional jump, or a fake edge to exit. */ if (single_succ_p (bb1) |