forked from OSchip/llvm-project
28 lines
806 B
LLVM
28 lines
806 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
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; PR4569
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define i16 @main() nounwind {
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entry:
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br label %bb.i
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bb.i: ; preds = %bb1.i, %bb.nph
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; We should be able to find the range for this expression.
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; CHECK: %l_95.0.i1 = phi i8
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; CHECK: --> {0,+,-1}<%bb.i> U: [2,1) S: [2,1){{ *}}Exits: 2
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%l_95.0.i1 = phi i8 [ %tmp1, %bb.i ], [ 0, %entry ]
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; This cast shouldn't be folded into the addrec.
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; CHECK: %tmp = zext i8 %l_95.0.i1 to i16
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; CHECK: --> (zext i8 {0,+,-1}<nw><%bb.i> to i16){{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: 2
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%tmp = zext i8 %l_95.0.i1 to i16
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%tmp1 = add i8 %l_95.0.i1, -1
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%phitmp = icmp eq i8 %tmp1, 1
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br i1 %phitmp, label %bb1.i.func_36.exit_crit_edge, label %bb.i
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bb1.i.func_36.exit_crit_edge:
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ret i16 %tmp
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}
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