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71ad2c9eda
after the given instruction; make sure to handle that case correctly. (It's difficult to trigger; the included testcase involves a dead block, but I don't think that's a requirement.) While I'm here, get rid of the unnecessary warning about SimplifyInstructionsInBlock, since it should work correctly as far as I know. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128782 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; RUN: opt < %s -jump-threading
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; PR9446
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; Just check that it doesn't crash
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define void @int327() nounwind {
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entry:
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unreachable
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for.cond: ; preds = %for.cond4
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%tobool3 = icmp eq i8 undef, 0
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br i1 %tobool3, label %for.cond23, label %for.cond4
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for.cond4: ; preds = %for.cond
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br label %for.cond
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for.cond23: ; preds = %for.body28, %for.cond23, %for.cond
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%conv321 = phi i32 [ %conv32, %for.body28 ], [ 0, %for.cond ], [ %conv321, %for.cond23 ]
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%l_266.0 = phi i32 [ %phitmp, %for.body28 ], [ 0, %for.cond ], [ 0, %for.cond23 ]
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%cmp26 = icmp eq i32 %l_266.0, 0
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br i1 %cmp26, label %for.body28, label %for.cond23
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for.body28: ; preds = %for.cond23
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%and = and i32 %conv321, 1
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%conv32 = zext i8 undef to i32
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%add = add nsw i32 %l_266.0, 1
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%phitmp = and i32 %add, 255
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br label %for.cond23
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if.end43: ; No predecessors!
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ret void
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}
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