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author | Devang Patel <dpatel@apple.com> | 2008-09-09 01:06:56 +0000 |
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committer | Devang Patel <dpatel@apple.com> | 2008-09-09 01:06:56 +0000 |
commit | e435a5d9374b61049b16ef69e6314542815fadb4 (patch) | |
tree | 03335a3e76eed83ae027b32dc2dbfa272e0b7d7e /test/Transforms/SimplifyCFG | |
parent | f72fb679eff7de84e3e18b75d63a18cb3510bcdd (diff) | |
download | external_llvm-e435a5d9374b61049b16ef69e6314542815fadb4.zip external_llvm-e435a5d9374b61049b16ef69e6314542815fadb4.tar.gz external_llvm-e435a5d9374b61049b16ef69e6314542815fadb4.tar.bz2 |
Fix simplifycfg crash in handing block merge.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55971 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyCFG')
-rw-r--r-- | test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll b/test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll new file mode 100644 index 0000000..82a2cc0 --- /dev/null +++ b/test/Transforms/SimplifyCFG/2008-09-08-MultiplePred.ll @@ -0,0 +1,60 @@ +; RUN: llvm-as < %s | opt -simplifycfg -disable-output +; PR 2777 +@g_103 = common global i32 0 ; <i32*> [#uses=1] + +define i32 @func_127(i32 %p_129) nounwind { +entry: + load i32* @g_103, align 4 ; <i32>:0 [#uses=1] + icmp eq i32 %0, 0 ; <i1>:1 [#uses=2] + br i1 %1, label %bb6.preheader, label %entry.return_crit_edge + +entry.return_crit_edge: ; preds = %entry + br label %return + +bb6.preheader: ; preds = %entry + br i1 %1, label %bb6.preheader.split.us, label %bb6.preheader.split + +bb6.preheader.split.us: ; preds = %bb6.preheader + br label %return.loopexit.split + +bb6.preheader.split: ; preds = %bb6.preheader + br label %bb6 + +bb6: ; preds = %bb17.bb6_crit_edge, %bb6.preheader.split + %indvar35 = phi i32 [ 0, %bb6.preheader.split ], [ %indvar.next36, %bb17.bb6_crit_edge ] ; <i32> [#uses=1] + %p_129_addr.3.reg2mem.0 = phi i32 [ %p_129_addr.2, %bb17.bb6_crit_edge ], [ %p_129, %bb6.preheader.split ] ; <i32> [#uses=3] + icmp eq i32 %p_129_addr.3.reg2mem.0, 0 ; <i1>:2 [#uses=1] + br i1 %2, label %bb6.bb17_crit_edge, label %bb8 + +bb6.bb17_crit_edge: ; preds = %bb6 + br label %bb17 + +bb8: ; preds = %bb6 + br label %bb13 + +bb13: ; preds = %bb8 + br label %bb17 + +bb17: ; preds = %bb13, %bb6.bb17_crit_edge + %p_129_addr.2 = phi i32 [ %p_129_addr.3.reg2mem.0, %bb13 ], [ %p_129_addr.3.reg2mem.0, %bb6.bb17_crit_edge ] ; <i32> [#uses=1] + %indvar.next36 = add i32 %indvar35, 1 ; <i32> [#uses=2] + %exitcond37 = icmp eq i32 %indvar.next36, -1 ; <i1> [#uses=1] + br i1 %exitcond37, label %return.loopexit, label %bb17.bb6_crit_edge + +bb17.bb6_crit_edge: ; preds = %bb17 + br label %bb6 + +return.loopexit: ; preds = %bb17 + br label %return.loopexit.split + +return.loopexit.split: ; preds = %return.loopexit, %bb6.preheader.split.us + br label %return + +return: ; preds = %return.loopexit.split, %entry.return_crit_edge + ret i32 1 +} + +define i32 @func_135(i8 zeroext %p_137, i32 %p_138, i32 %p_140) nounwind { +entry: + ret i32 undef +} |