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; RUN: llc -mtriple=x86_64-linux-gnu %s -o - -verify-machineinstrs | FileCheck %s
define i32 @tail_merge_unreachable(i32 %i) {
entry:
br i1 undef, label %sw, label %end
sw:
switch i32 %i, label %end [
i32 99, label %sw.bb
i32 98, label %sw.bb
i32 101, label %sw.bb
i32 97, label %sw.bb2
i32 96, label %sw.bb2
i32 100, label %sw.bb2
]
sw.bb:
unreachable
sw.bb2:
unreachable
end:
%p = phi i32 [ 1, %sw ], [ 0, %entry ]
ret i32 %p
; CHECK-LABEL: tail_merge_unreachable:
; Range Check
; CHECK: addl $-96
; CHECK: cmpl $5
; CHECK: jbe [[JUMP_TABLE_BLOCK:[.][A-Za-z0-9_]+]]
; CHECK: retq
; CHECK: [[JUMP_TABLE_BLOCK]]:
; CHECK: btl
; CHECK: jae [[UNREACHABLE_BLOCK:[.][A-Za-z0-9_]+]]
; CHECK: [[UNREACHABLE_BLOCK]]:
; CHECK: .Lfunc_end0
}
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