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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
; RUN: llc -mtriple=s390x-linux-gnu < %s | FileCheck %s
; Trivial patchpoint codegen
;
define i64 @trivial_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: trivial_patchpoint_codegen:
; CHECK: llilf %r1, 559038736
; CHECK-NEXT: basr %r14, %r1
; CHECK-NEXT: bcr 0, %r0
; CHECK: lgr [[REG0:%r[0-9]+]], %r2
; CHECK: llilf %r1, 559038737
; CHECK-NEXT: basr %r14, %r1
; CHECK-NEXT: bcr 0, %r0
; CHECK: lgr %r2, [[REG0:%r[0-9]+]]
; CHECK: br %r14
%resolveCall2 = inttoptr i64 559038736 to ptr
%result = tail call i64 (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.i64(i64 2, i32 10, ptr %resolveCall2, i32 4, i64 %p1, i64 %p2, i64 %p3, i64 %p4)
%resolveCall3 = inttoptr i64 559038737 to ptr
tail call void (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.void(i64 3, i32 10, ptr %resolveCall3, i32 2, i64 %p1, i64 %result)
ret i64 %result
}
; Trivial symbolic patchpoint codegen.
;
declare i64 @foo(i64 %p1, i64 %p2)
define i64 @trivial_symbolic_patchpoint_codegen(i64 %p1, i64 %p2) {
entry:
; CHECK-LABEL: trivial_symbolic_patchpoint_codegen:
; CHECK: brasl %r14, foo@PLT
; CHECK-NEXT: bcr 0, %r0
; CHECK: br %r14
%result = tail call i64 (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.i64(i64 9, i32 8, ptr @foo, i32 2, i64 %p1, i64 %p2)
ret i64 %result
}
; Caller frame metadata with stackmaps. This should not be optimized
; as a leaf function.
;
; CHECK-LABEL: caller_meta_leaf
; CHECK: aghi %r15, -184
; CHECK: .Ltmp
; CHECK: lmg %r14, %r15, 296(%r15)
; CHECK: br %r14
define void @caller_meta_leaf() {
entry:
%metadata = alloca i64, i32 3, align 8
store i64 11, ptr %metadata
store i64 12, ptr %metadata
store i64 13, ptr %metadata
call void (i64, i32, ...) @llvm.experimental.stackmap(i64 4, i32 0, ptr %metadata)
ret void
}
; Test patchpoints reusing the same TargetConstant.
; <rdar:15390785> Assertion failed: (CI.getNumArgOperands() >= NumArgs + 4)
; There is no way to verify this, since it depends on memory allocation.
; But I think it's useful to include as a working example.
define i64 @testLowerConstant(i64 %arg, i64 %tmp2, i64 %tmp10, ptr %tmp33, i64 %tmp79) {
entry:
%tmp80 = add i64 %tmp79, -16
%tmp81 = inttoptr i64 %tmp80 to ptr
%tmp82 = load i64, ptr %tmp81, align 8
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 14, i32 6, i64 %arg, i64 %tmp2, i64 %tmp10, i64 %tmp82)
tail call void (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.void(i64 15, i32 30, ptr null, i32 3, i64 %arg, i64 %tmp10, i64 %tmp82)
%tmp83 = load i64, ptr %tmp33, align 8
%tmp84 = add i64 %tmp83, -24
%tmp85 = inttoptr i64 %tmp84 to ptr
%tmp86 = load i64, ptr %tmp85, align 8
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 17, i32 6, i64 %arg, i64 %tmp10, i64 %tmp86)
tail call void (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.void(i64 18, i32 30, ptr null, i32 3, i64 %arg, i64 %tmp10, i64 %tmp86)
ret i64 10
}
; Test small patchpoints that don't emit calls.
define void @small_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: small_patchpoint_codegen:
; CHECK: .Ltmp
; CHECK: bcr 0, %r0
; CHECK: br %r14
%result = tail call i64 (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.i64(i64 5, i32 2, ptr null, i32 2, i64 %p1, i64 %p2)
ret void
}
; Test large target address.
define i64 @large_target_address_patchpoint_codegen() {
entry:
; CHECK-LABEL: large_target_address_patchpoint_codegen:
; CHECK: llilf %r1, 2566957755
; CHECK-NEXT: iihf %r1, 1432778632
; CHECK-NEXT: basr %r14, %r1
%resolveCall2 = inttoptr i64 6153737369414576827 to ptr
%result = tail call i64 (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.i64(i64 2, i32 14, ptr %resolveCall2, i32 0)
ret i64 %result
}
; Test that the number of bytes is reflected in the instruction size and
; therefore cause relaxation of the initial branch.
define void @patchpoint_size(i32 %Arg) {
; CHECK-LABEL: patchpoint_size:
; CHECK: # %bb.0:
; CHECK-NEXT: stmg %r14, %r15, 112(%r15)
; CHECK-NEXT: .cfi_offset %r14, -48
; CHECK-NEXT: .cfi_offset %r15, -40
; CHECK-NEXT: aghi %r15, -160
; CHECK-NEXT: .cfi_def_cfa_offset 320
; CHECK-NEXT: chi %r2, 0
; CHECK-NEXT: jge .LBB6_2
%c = icmp eq i32 %Arg, 0
br i1 %c, label %block0, label %patch1
block0:
call i64 @foo(i64 0, i64 0)
br label %exit
patch1:
call void (i64, i32, ptr, i32, ...) @llvm.experimental.patchpoint.void(i64 0, i32 65536, ptr null, i32 0)
br label %exit
exit:
ret void
}
define void @stackmap_size(i32 %Arg) {
; CHECK-LABEL: stackmap_size:
; CHECK: # %bb.0:
; CHECK-NEXT: stmg %r14, %r15, 112(%r15)
; CHECK-NEXT: .cfi_offset %r14, -48
; CHECK-NEXT: .cfi_offset %r15, -40
; CHECK-NEXT: aghi %r15, -160
; CHECK-NEXT: .cfi_def_cfa_offset 320
; CHECK-NEXT: chi %r2, 0
; CHECK-NEXT: jge .LBB7_2
%c = icmp eq i32 %Arg, 0
br i1 %c, label %block0, label %stackmap1
block0:
call i64 @foo(i64 0, i64 0)
br label %exit
stackmap1:
call void (i64, i32, ...) @llvm.experimental.stackmap(i64 1, i32 65536)
br label %exit
exit:
ret void
}
declare void @llvm.experimental.stackmap(i64, i32, ...)
declare void @llvm.experimental.patchpoint.void(i64, i32, ptr, i32, ...)
declare i64 @llvm.experimental.patchpoint.i64(i64, i32, ptr, i32, ...)
|
