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28aff84ceb
We rely on it when doing the transforms. This can happen when there is an indirectbr in the loop. Fixes PR13892. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164383 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
; RUN: opt -S -loop-idiom < %s
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; Don't crash
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; PR13892
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @test(i32* %currMB) nounwind uwtable {
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entry:
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br i1 undef, label %start.exit, label %if.then.i
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if.then.i: ; preds = %entry
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unreachable
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start.exit: ; preds = %entry
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indirectbr i8* undef, [label %0, label %for.bodyprime]
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; <label>:0 ; preds = %start.exit
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unreachable
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for.bodyprime: ; preds = %for.bodyprime, %start.exit
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%i.057375 = phi i32 [ 0, %start.exit ], [ %1, %for.bodyprime ]
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%arrayidx8prime = getelementptr inbounds i32* %currMB, i32 %i.057375
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store i32 0, i32* %arrayidx8prime, align 4
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%1 = add i32 %i.057375, 1
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%cmp5prime = icmp slt i32 %1, 4
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br i1 %cmp5prime, label %for.bodyprime, label %for.endprime
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for.endprime: ; preds = %for.bodyprime
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br label %for.body23prime
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for.body23prime: ; preds = %for.body23prime, %for.endprime
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br label %for.body23prime
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}
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