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4562d3b919
preserves LCSSA form out of ScalarEvolution and into the LoopInfo class. Use it to check that SimplifyInstruction simplifications are not breaking LCSSA form. Fixes PR8622. llvm-svn: 119727
29 lines
909 B
LLVM
29 lines
909 B
LLVM
; RUN: opt < %s -loop-unswitch
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; PR8622
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@g_38 = external global i32, align 4
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define void @func_67(i32 %p_68.coerce) nounwind {
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entry:
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br i1 true, label %for.end12, label %bb.nph
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bb.nph: ; preds = %entry
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%g_38.promoted = load i32* @g_38
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br label %for.body
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for.body: ; preds = %for.cond, %bb.nph
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%tobool.i = icmp eq i32 %p_68.coerce, 1
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%xor4.i = xor i32 %p_68.coerce, 1
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%call1 = select i1 %tobool.i, i32 0, i32 %xor4.i
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br label %for.cond
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for.cond: ; preds = %for.body
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br i1 true, label %for.cond.for.end12_crit_edge, label %for.body
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for.cond.for.end12_crit_edge: ; preds = %for.cond
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store i32 %call1, i32* @g_38
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br label %for.end12
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for.end12: ; preds = %for.cond.for.end12_crit_edge, %entry
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ret void
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}
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