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| author | Jakub Jelinek <jakub@redhat.com> | 2016-08-17 15:56:30 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-08-17 15:56:30 +0200 |
| commit | 458a1cd089646f1308c6c19573d095852f10d91d (patch) | |
| tree | 1eeb4e157a1fda36611f079637227095e54c6a8c /gcc/tree-cfgcleanup.c | |
| parent | 37144e84aaacf4b5fe10692b9c7c690fb47df224 (diff) | |
| download | gcc-458a1cd089646f1308c6c19573d095852f10d91d.zip gcc-458a1cd089646f1308c6c19573d095852f10d91d.tar.gz gcc-458a1cd089646f1308c6c19573d095852f10d91d.tar.bz2 | |
re PR middle-end/77259 (ICE in emit_move_insn since r232167)
PR middle-end/77259
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): If
turning a call into __builtin_unreachable-like noreturn call, adjust
gimple_call_set_fntype.
* tree-cfgcleanup.c (fixup_noreturn_call): Remove lhs also if
gimple_call_fntype has void return type.
* g++.dg/ipa/devirt-52.C: New test.
From-SVN: r239537
Diffstat (limited to 'gcc/tree-cfgcleanup.c')
| -rw-r--r-- | gcc/tree-cfgcleanup.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/tree-cfgcleanup.c b/gcc/tree-cfgcleanup.c index 3fe0d3e..6052872 100644 --- a/gcc/tree-cfgcleanup.c +++ b/gcc/tree-cfgcleanup.c @@ -602,9 +602,14 @@ fixup_noreturn_call (gimple *stmt) /* If there is an LHS, remove it, but only if its type has fixed size. The LHS will need to be recreated during RTL expansion and creating temporaries of variable-sized types is not supported. Also don't - do this with TREE_ADDRESSABLE types, as assign_temp will abort. */ + do this with TREE_ADDRESSABLE types, as assign_temp will abort. + Drop LHS regardless of TREE_ADDRESSABLE, if the function call + has been changed into a call that does not return a value, like + __builtin_unreachable or __cxa_pure_virtual. */ tree lhs = gimple_call_lhs (stmt); - if (should_remove_lhs_p (lhs)) + if (lhs + && (should_remove_lhs_p (lhs) + || VOID_TYPE_P (TREE_TYPE (gimple_call_fntype (stmt))))) { gimple_call_set_lhs (stmt, NULL_TREE); |