1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
; RUN: llc < %s -mtriple=riscv64 -o - | FileCheck %s
define void @foo(i32 %i) nounwind {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: addi sp, sp, -16
; CHECK-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT: sext.w a0, a0
; CHECK-NEXT: li a1, 7
; CHECK-NEXT: beq a0, a1, .LBB0_3
; CHECK-NEXT: # %bb.1: # %entry
; CHECK-NEXT: li a1, 5
; CHECK-NEXT: bne a0, a1, .LBB0_4
; CHECK-NEXT: # %bb.2: # %if.then
; CHECK-NEXT: call bar
; CHECK-NEXT: j .LBB0_4
; CHECK-NEXT: .LBB0_3: # %if.then2
; CHECK-NEXT: call bar
; CHECK-NEXT: .LBB0_4: # %if.end3
; CHECK-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT: addi sp, sp, 16
; CHECK-NEXT: tail bar
entry:
switch i32 %i, label %if.end3 [
i32 5, label %if.then
i32 7, label %if.then2
]
if.then:
tail call void @bar() #0
br label %if.end3
if.then2:
tail call void @bar() #0
br label %if.end3
if.end3:
tail call void @bar() #0
ret void
}
define void @foo_tail(i1 %i) nounwind {
; CHECK-LABEL: foo_tail:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: andi a0, a0, 1
; CHECK-NEXT: beqz a0, .LBB1_2
; CHECK-NEXT: # %bb.1: # %if.then
; CHECK-NEXT: tail bar
; CHECK-NEXT: .LBB1_2: # %if.else
; CHECK-NEXT: tail bar
entry:
br i1 %i, label %if.then, label %if.else
if.then:
tail call void @bar() #0
br label %if.end
if.else:
tail call void @bar() #0
br label %if.end
if.end:
ret void
}
declare void @bar()
attributes #0 = { nomerge }
|
