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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-- < %s | FileCheck %s
declare void @clobber()
define void @test(i1 %c, ptr %p, ptr noalias %p2) nounwind {
; CHECK-LABEL: test:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushq %rbp
; CHECK-NEXT: pushq %r14
; CHECK-NEXT: pushq %rbx
; CHECK-NEXT: movq %rdx, %rbx
; CHECK-NEXT: movl %edi, %ebp
; CHECK-NEXT: movq (%rsi), %r14
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: jmpq *.LJTI0_0(,%rax,8)
; CHECK-NEXT: .LBB0_1: # %split.3
; CHECK-NEXT: testb $1, %bpl
; CHECK-NEXT: je .LBB0_3
; CHECK-NEXT: # %bb.2: # %clobber
; CHECK-NEXT: callq clobber@PLT
; CHECK-NEXT: .LBB0_3: # %sink
; CHECK-NEXT: movq %r14, (%rbx)
; CHECK-NEXT: .LBB0_4: # %latch
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: jmpq *.LJTI0_0(,%rax,8)
entry:
%val = load i64, ptr %p, align 8
br label %loop
loop:
switch i8 undef, label %unreachable [
i8 0, label %latch
i8 1, label %split.1
i8 2, label %split.2
i8 3, label %split.3
]
unreachable:
unreachable
split.3:
br i1 %c, label %clobber, label %sink
split.1:
br label %latch
split.2:
br label %latch
clobber:
call void @clobber()
br label %sink
sink:
store i64 %val, ptr %p2, align 8
br label %latch
latch:
%phi = phi i64 [ 0, %sink ], [ 0, %split.2 ], [ 1, %split.1 ], [ 0, %loop ]
%phi.live = add i64 %phi, 0
br label %loop
}
|
