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
156
157
158
159
160
161
162
163
|
; RUN: llc -mtriple=arm64-linux-gnu -enable-misched=false -disable-post-ra < %s | FileCheck %s
@var = dso_local global i32 0, align 4
; CHECK-LABEL: @test_i128_align
define dso_local i128 @test_i128_align(i32, i128 %arg, i32 %after) {
store i32 %after, i32* @var, align 4
; CHECK-DAG: str w4, [{{x[0-9]+}}, :lo12:var]
ret i128 %arg
; CHECK-DAG: mov x0, x2
; CHECK-DAG: mov x1, x3
}
; CHECK-LABEL: @test_i64x2_align
define [2 x i64] @test_i64x2_align(i32, [2 x i64] %arg, i32 %after) {
store i32 %after, i32* @var, align 4
; CHECK-DAG: str w3, [{{x[0-9]+}}, :lo12:var]
ret [2 x i64] %arg
; CHECK-DAG: mov x0, x1
; CHECK: mov x1, x2
}
@var64 = dso_local global i64 0, align 8
; Check stack slots are 64-bit at all times.
define dso_local void @test_stack_slots([8 x i64], i1 %bool, i8 %char, i16 %short,
i32 %int, i64 %long) {
; CHECK-LABEL: test_stack_slots:
; CHECK-DAG: ldr w[[ext1:[0-9]+]], [sp, #24]
; CHECK-DAG: ldrh w[[ext2:[0-9]+]], [sp, #16]
; CHECK-DAG: ldrb w[[ext3:[0-9]+]], [sp, #8]
; CHECK-DAG: ldr x[[ext4:[0-9]+]], [sp, #32]
; CHECK-DAG: ldrb w[[ext5:[0-9]+]], [sp]
%ext_bool = zext i1 %bool to i64
store volatile i64 %ext_bool, i64* @var64, align 8
; CHECK: str x[[ext5]], [{{x[0-9]+}}, :lo12:var64]
%ext_char = zext i8 %char to i64
store volatile i64 %ext_char, i64* @var64, align 8
; CHECK: str x[[ext3]], [{{x[0-9]+}}, :lo12:var64]
%ext_short = zext i16 %short to i64
store volatile i64 %ext_short, i64* @var64, align 8
; CHECK: str x[[ext2]], [{{x[0-9]+}}, :lo12:var64]
%ext_int = zext i32 %int to i64
store volatile i64 %ext_int, i64* @var64, align 8
; CHECK: str x[[ext1]], [{{x[0-9]+}}, :lo12:var64]
store volatile i64 %long, i64* @var64, align 8
; CHECK: str x[[ext4]], [{{x[0-9]+}}, :lo12:var64]
ret void
}
; Make sure the callee does extensions (in the absence of zext/sext
; keyword on args) while we're here.
define dso_local void @test_extension(i1 %bool, i8 %char, i16 %short, i32 %int) {
%ext_bool = zext i1 %bool to i64
store volatile i64 %ext_bool, i64* @var64
; CHECK: and [[EXT:x[0-9]+]], x0, #0x1
; CHECK: str [[EXT]], [{{x[0-9]+}}, :lo12:var64]
%ext_char = sext i8 %char to i64
store volatile i64 %ext_char, i64* @var64
; CHECK: sxtb [[EXT:x[0-9]+]], w1
; CHECK: str [[EXT]], [{{x[0-9]+}}, :lo12:var64]
%ext_short = zext i16 %short to i64
store volatile i64 %ext_short, i64* @var64
; CHECK: and [[EXT:x[0-9]+]], x2, #0xffff
; CHECK: str [[EXT]], [{{x[0-9]+}}, :lo12:var64]
%ext_int = zext i32 %int to i64
store volatile i64 %ext_int, i64* @var64
; CHECK: mov w[[EXT:[0-9]+]], w3
; CHECK: str x[[EXT]], [{{x[0-9]+}}, :lo12:var64]
ret void
}
declare void @variadic(i32 %a, ...)
; Under AAPCS variadic functions have the same calling convention as
; others. The extra arguments should go in registers rather than on the stack.
define dso_local void @test_variadic() {
call void(i32, ...) @variadic(i32 0, i64 1, double 2.0)
; CHECK: mov w1, #1
; CHECK: fmov d0, #2.0
; CHECK: bl variadic
ret void
}
; We weren't marking x7 as used after deciding that the i128 didn't fit into
; registers and putting the first half on the stack, so the *second* half went
; into x7. Yuck!
define dso_local i128 @test_i128_shadow([7 x i64] %x0_x6, i128 %sp) {
; CHECK-LABEL: test_i128_shadow:
; CHECK: ldp x0, x1, [sp]
ret i128 %sp
}
; This test is to check if fp128 can be correctly handled on stack.
define fp128 @test_fp128([8 x float] %arg0, fp128 %arg1) {
; CHECK-LABEL: test_fp128:
; CHECK: ldr {{q[0-9]+}}, [sp]
ret fp128 %arg1
}
; Check if VPR can be correctly pass by stack.
define dso_local <2 x double> @test_vreg_stack([8 x <2 x double>], <2 x double> %varg_stack) {
entry:
; CHECK-LABEL: test_vreg_stack:
; CHECK: ldr {{q[0-9]+}}, [sp]
ret <2 x double> %varg_stack;
}
; Check that f16 can be passed and returned (ACLE 2.0 extension)
define half @test_half(float, half %arg) {
; CHECK-LABEL: test_half:
; CHECK: fmov s0, s1
ret half %arg;
}
; Check that f16 constants are materialized correctly
define half @test_half_const() {
; CHECK-LABEL: test_half_const:
; CHECK: ldr h0, [x{{[0-9]+}}, :lo12:{{.*}}]
ret half 0xH4248
}
; Check that v4f16 can be passed and returned in registers
define dso_local <4 x half> @test_v4_half_register(float, <4 x half> %arg) {
; CHECK-LABEL: test_v4_half_register:
; CHECK: fmov d0, d1
ret <4 x half> %arg;
}
; Check that v8f16 can be passed and returned in registers
define dso_local <8 x half> @test_v8_half_register(float, <8 x half> %arg) {
; CHECK-LABEL: test_v8_half_register:
; CHECK: mov v0.16b, v1.16b
ret <8 x half> %arg;
}
; Check that v4f16 can be passed and returned on the stack
define dso_local <4 x half> @test_v4_half_stack([8 x <2 x double>], <4 x half> %arg) {
; CHECK-LABEL: test_v4_half_stack:
; CHECK: ldr d0, [sp]
ret <4 x half> %arg;
}
; Check that v8f16 can be passed and returned on the stack
define dso_local <8 x half> @test_v8_half_stack([8 x <2 x double>], <8 x half> %arg) {
; CHECK-LABEL: test_v8_half_stack:
; CHECK: ldr q0, [sp]
ret <8 x half> %arg;
}
|
