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; RUN: opt < %s -passes=loop-simplify,lcssa -verify-loop-info -verify-dom-info -S \
; RUN: | grep -F "indirectbr ptr %x, [label %L0, label %L1]" \
; RUN: | count 6
; LoopSimplify should not try to transform loops when indirectbr is involved.
define void @entry(ptr %x) {
entry:
indirectbr ptr %x, [ label %L0, label %L1 ]
L0:
br label %L0
L1:
ret void
}
define void @backedge(ptr %x) {
entry:
br label %L0
L0:
br label %L1
L1:
indirectbr ptr %x, [ label %L0, label %L1 ]
}
define i64 @exit(ptr %x) {
entry:
br label %L2
L2:
%z = bitcast i64 0 to i64
indirectbr ptr %x, [ label %L0, label %L1 ]
L0:
br label %L2
L1:
ret i64 %z
}
define i64 @criticalexit(ptr %x, i1 %a) {
entry:
br i1 %a, label %L1, label %L2
L2:
%z = bitcast i64 0 to i64
indirectbr ptr %x, [ label %L0, label %L1 ]
L0:
br label %L2
L1:
%y = phi i64 [ %z, %L2 ], [ 1, %entry ]
ret i64 %y
}
define i64 @exit_backedge(ptr %x) {
entry:
br label %L0
L0:
%z = bitcast i64 0 to i64
indirectbr ptr %x, [ label %L0, label %L1 ]
L1:
ret i64 %z
}
define i64 @criticalexit_backedge(ptr %x, i1 %a) {
entry:
br i1 %a, label %L0, label %L1
L0:
%z = bitcast i64 0 to i64
indirectbr ptr %x, [ label %L0, label %L1 ]
L1:
%y = phi i64 [ %z, %L0 ], [ 1, %entry ]
ret i64 %y
}
define void @pr5502() nounwind {
entry:
br label %while.cond
while.cond:
br i1 undef, label %while.body, label %while.end
while.body:
indirectbr ptr undef, [label %end_opcode, label %end_opcode]
end_opcode:
br i1 false, label %end_opcode, label %while.cond
while.end:
ret void
}
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