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Check the llc output.
[oota-llvm.git]
/
test
/
CodeGen
/
X86
/
tail-threshold.ll
1
; RUN: llc -march=x86-64 -tail-merge-threshold 2 < %s | FileCheck %s
2
3
; Test that we still do some merging if a block has more than
4
; tail-merge-threshold predecessors.
5
6
; CHECK: callq bar
7
; CHECK: callq bar
8
; CHECK: callq bar
9
; CHECK-NOT: callq
10
11
declare void @bar()
12
13
define void @foo(i32 %xxx) {
14
entry:
15
switch i32 %xxx, label %bb4 [
16
i32 0, label %bb0
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i32 1, label %bb1
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i32 2, label %bb2
19
i32 3, label %bb3
20
]
21
22
bb0:
23
call void @bar()
24
br label %bb5
25
26
bb1:
27
call void @bar()
28
br label %bb5
29
30
bb2:
31
call void @bar()
32
br label %bb5
33
34
bb3:
35
call void @bar()
36
br label %bb5
37
38
bb4:
39
call void @bar()
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br label %bb5
41
42
bb5:
43
ret void
44
}