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; RUN: opt -lowerswitch -S < %s | FileCheck %s
; Test that we don't crash and have a different basic block for each incoming edge.
define void @test0() {
; CHECK-LABEL: @test0
; CHECK: %merge = phi i64 [ 1, %BB3 ], [ 0, %NewDefault ], [ 0, %NodeBlock5 ], [ 0, %LeafBlock1 ]
BB1:
switch i32 undef, label %BB2 [
i32 3, label %BB2
i32 5, label %BB2
i32 0, label %BB3
i32 2, label %BB3
i32 4, label %BB3
]
BB2:
%merge = phi i64 [ 1, %BB3 ], [ 0, %BB1 ], [ 0, %BB1 ], [ 0, %BB1 ]
ret void
BB3:
br label %BB2
}
; Test switch cases that are merged into a single case during lowerswitch
; (take 84 and 85 below) - check that the number of incoming phi values match
; the number of branches.
define void @test1() {
; CHECK-LABEL: @test1
entry:
br label %bb1
bb1:
switch i32 undef, label %bb1 [
i32 84, label %bb3
i32 85, label %bb3
i32 86, label %bb2
i32 78, label %exit
i32 99, label %bb3
]
bb2:
br label %bb3
bb3:
; CHECK-LABEL: bb3
; CHECK: %tmp = phi i32 [ 1, %NodeBlock ], [ 0, %bb2 ], [ 1, %LeafBlock3 ]
%tmp = phi i32 [ 1, %bb1 ], [ 0, %bb2 ], [ 1, %bb1 ], [ 1, %bb1 ]
; CHECK-NEXT: %tmp2 = phi i32 [ 2, %NodeBlock ], [ 5, %bb2 ], [ 2, %LeafBlock3 ]
%tmp2 = phi i32 [ 2, %bb1 ], [ 2, %bb1 ], [ 5, %bb2 ], [ 2, %bb1 ]
br label %exit
exit:
ret void
}
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