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05bb789430
way or the other. Rewriting the code itself prevents subsequent analysis passes from making contradictory conclusions about the code that could cause an infeasible path to be made feasible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46427 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
651 B
LLVM
37 lines
651 B
LLVM
; RUN: llvm-as < %s | opt -sccp | llvm-dis | grep undef | count 1
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; PR1938
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define i32 @main() {
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entry:
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br label %bb
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bb:
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%indvar = phi i32 [ 0, %entry ], [ %k, %bb.backedge ]
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%k = add i32 %indvar, 1
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br i1 undef, label %cond_true, label %cond_false
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cond_true:
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%tmp97 = icmp slt i32 %k, 10
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br i1 %tmp97, label %bb.backedge, label %bb12
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bb.backedge:
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br label %bb
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cond_false:
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%tmp9 = icmp slt i32 %k, 10
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br i1 %tmp9, label %bb.backedge, label %bb12
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bb12:
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%tmp14 = icmp eq i32 %k, 10
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br i1 %tmp14, label %cond_next18, label %cond_true17
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cond_true17:
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tail call void @abort( )
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unreachable
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cond_next18:
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ret i32 0
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}
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declare void @abort()
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