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| ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -enable-if-conversion
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"
define fastcc void @DD_dump() nounwind uwtable ssp {
entry:
br i1 undef, label %lor.lhs.false, label %if.end25
lor.lhs.false: ; preds = %entry
br i1 undef, label %if.end21, label %if.else
if.else: ; preds = %lor.lhs.false
br i1 undef, label %num_q.exit, label %while.body.i.preheader
while.body.i.preheader: ; preds = %if.else
br label %while.body.i
while.body.i: ; preds = %if.end.i, %while.body.i.preheader
switch i8 undef, label %if.end.i [
i8 39, label %if.then.i
i8 92, label %if.then.i
]
if.then.i: ; preds = %while.body.i, %while.body.i
br label %if.end.i
if.end.i: ; preds = %if.then.i, %while.body.i
br i1 undef, label %num_q.exit, label %while.body.i
num_q.exit: ; preds = %if.end.i, %if.else
unreachable
if.end21: ; preds = %lor.lhs.false
unreachable
if.end25: ; preds = %entry
ret void
}
; PR15990
; We can have basic blocks with single entry PHI nodes.
define void @single_entry_phi(i32* %a, i32 *%b) {
entry:
br label %for.cond1.preheader
for.cond1.preheader:
%inc10 = phi i32 [ 0, %entry ], [ %inc, %for.end ]
br label %for.end
for.end:
%malicious.phi = phi i32 [ 0, %for.cond1.preheader ]
%inc = add nsw i32 %inc10, 1
%tobool = icmp eq i32 %inc, 0
br i1 %tobool, label %for.cond.for.end5, label %for.cond1.preheader
for.cond.for.end5:
%and.lcssa = phi i32 [ %malicious.phi, %for.end ]
store i32 %and.lcssa, i32* %a, align 4
ret void
}
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