1; RUN: llc < %s -asm-verbose=false | FileCheck %s
2; RUN: llc < %s -asm-verbose=false -fast-isel | FileCheck %s
3
4
5target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
6target triple = "wasm32-unknown-unknown"
7
8; CHECK-LABEL: alloca32:
9; Check that there is an extra local for the stack pointer.
10; CHECK: .local i32, i32, i32, i32{{$}}
11define void @alloca32() {
12 ; CHECK: i32.const [[L1:.+]]=, __stack_pointer
13 ; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
14 ; CHECK-NEXT: i32.const [[L2:.+]]=, 16
15 ; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
16 %retval = alloca i32
17 ; CHECK: i32.const $push[[L3:.+]]=, 0
18 ; CHECK: i32.store {{.*}}=, 12([[SP]]), $pop[[L3]]
19 store i32 0, i32* %retval
20 ; CHECK: i32.const [[L4:.+]]=, 16
21 ; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L4]]
22 ; CHECK-NEXT: i32.const [[L5:.+]]=, __stack_pointer
23 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L5]]), [[SP]]
24 ret void
25}
26
27; CHECK-LABEL: alloca3264:
28; CHECK: .local i32, i32, i32, i32{{$}}
29define void @alloca3264() {
30 ; CHECK: i32.const [[L1:.+]]=, __stack_pointer
31 ; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
32 ; CHECK-NEXT: i32.const [[L2:.+]]=, 16
33 ; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
34 %r1 = alloca i32
35 %r2 = alloca double
36 ; CHECK: i32.const $push[[L3:.+]]=, 0
37 ; CHECK: i32.store {{.*}}=, 12([[SP]]), $pop[[L3]]
38 store i32 0, i32* %r1
39 ; CHECK: i64.const $push[[L4:.+]]=, 0
40 ; CHECK: i64.store {{.*}}=, 0([[SP]]), $pop[[L4]]
41 store double 0.0, double* %r2
42 ; CHECK: i32.const [[L4:.+]]=, 16
43 ; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L4]]
44 ; CHECK-NEXT: i32.const [[L5:.+]]=, __stack_pointer
45 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L5]]), [[SP]]
46 ret void
47}
48
49; CHECK-LABEL: allocarray:
50; CHECK: .local i32, i32, i32, i32, i32{{$}}
51define void @allocarray() {
52 ; CHECK-NEXT: i32.const [[L1:.+]]=, __stack_pointer
53 ; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
54 ; CHECK-NEXT: i32.const [[L2:.+]]=, 32{{$}}
55 ; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
56 ; CHECK-NEXT: i32.const [[L2]]=, __stack_pointer{{$}}
57 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L2]]), [[SP]]
58 %r = alloca [5 x i32]
59
60 ; CHECK-NEXT: i32.const $push[[L4:.+]]=, 12
61 ; CHECK-NEXT: i32.const [[L5:.+]]=, 12
62 ; CHECK-NEXT: i32.add [[L5]]=, [[SP]], [[L5]]
63 ; CHECK-NEXT: i32.add $push[[L6:.+]]=, [[L5]], $pop[[L4]]
64 ; CHECK-NEXT: i32.const $push[[L9:.+]]=, 1{{$}}
65 ; CHECK-NEXT: i32.store $push[[L10:.+]]=, 12([[SP]]), $pop[[L9]]{{$}}
66 ; CHECK-NEXT: i32.store $discard=, 0($pop3), $pop[[L10]]{{$}}
67 %p = getelementptr [5 x i32], [5 x i32]* %r, i32 0, i32 0
68 store i32 1, i32* %p
69 %p2 = getelementptr [5 x i32], [5 x i32]* %r, i32 0, i32 3
70 store i32 1, i32* %p2
71
72 ; CHECK-NEXT: i32.const [[L7:.+]]=, 32
73 ; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L7]]
74 ; CHECK-NEXT: i32.const [[L8:.+]]=, __stack_pointer
75 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L8]]), [[SP]]
76 ret void
77}
78
79declare void @ext_func(i64* %ptr)
80; CHECK-LABEL: non_mem_use
81define void @non_mem_use(i8** %addr) {
82 ; CHECK: i32.const [[L2:.+]]=, 48
83 ; CHECK-NEXT: i32.sub [[SP:.+]]=, {{.+}}, [[L2]]
84 %buf = alloca [27 x i8], align 16
85 %r = alloca i64
86 %r2 = alloca i64
87 ; %r is at SP+8
88 ; CHECK: i32.const [[OFF:.+]]=, 8
89 ; CHECK-NEXT: i32.add [[ARG1:.+]]=, [[SP]], [[OFF]]
90 ; CHECK-NEXT: call ext_func@FUNCTION, [[ARG1]]
91 call void @ext_func(i64* %r)
92 ; %r2 is at SP+0, no add needed
93 ; CHECK-NEXT: call ext_func@FUNCTION, [[SP]]
94 call void @ext_func(i64* %r2)
95 ; Use as a value, but in a store
96 ; %buf is at SP+16
97 ; CHECK: i32.const [[OFF:.+]]=, 16
98 ; CHECK-NEXT: i32.add [[VAL:.+]]=, [[SP]], [[OFF]]
99 ; CHECK-NEXT: i32.store {{.*}}=, 0($0), [[VAL]]
100 %gep = getelementptr inbounds [27 x i8], [27 x i8]* %buf, i32 0, i32 0
101 store i8* %gep, i8** %addr
102 ret void
103}
104
105; CHECK-LABEL: allocarray_inbounds:
106; CHECK: .local i32, i32, i32, i32{{$}}
107define void @allocarray_inbounds() {
108 ; CHECK: i32.const [[L1:.+]]=, __stack_pointer
109 ; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
110 ; CHECK-NEXT: i32.const [[L2:.+]]=, 32
111 ; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
112 %r = alloca [5 x i32]
113 ; CHECK: i32.const $push[[L3:.+]]=, 1
114 ; CHECK: i32.store {{.*}}=, 12([[SP]]), $pop[[L3]]
115 %p = getelementptr inbounds [5 x i32], [5 x i32]* %r, i32 0, i32 0
116 store i32 1, i32* %p
117 ; This store should have both the GEP and the FI folded into it.
118 ; CHECK-NEXT: i32.store {{.*}}=, 24([[SP]]), $pop
119 %p2 = getelementptr inbounds [5 x i32], [5 x i32]* %r, i32 0, i32 3
120 store i32 1, i32* %p2
121 ; CHECK: i32.const [[L7:.+]]=, 32
122 ; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L7]]
123 ; CHECK-NEXT: i32.const [[L8:.+]]=, __stack_pointer
124 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L7]]), [[SP]]
125 ret void
126}
127
128; CHECK-LABEL: dynamic_alloca:
129define void @dynamic_alloca(i32 %alloc) {
130 ; CHECK: i32.const [[L0:.+]]=, __stack_pointer
131 ; CHECK-NEXT: i32.load [[SP:.+]]=, 0([[L0]])
132 ; CHECK-NEXT: copy_local [[FP:.+]]=, [[SP]]
133 ; Target independent codegen bumps the stack pointer
134 ; FIXME: we need to write the value back to memory
135 %r = alloca i32, i32 %alloc
136 ; Target-independent codegen also calculates the store addr
137 store i32 0, i32* %r
138 ; CHECK: i32.const [[L3:.+]]=, __stack_pointer
139 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L3]]), [[FP]]
140 ret void
141}
142
143
144; CHECK-LABEL: dynamic_static_alloca:
145define void @dynamic_static_alloca(i32 %alloc) {
146 ; CHECK: i32.const [[L0:.+]]=, __stack_pointer
147 ; CHECK-NEXT: i32.load [[L0]]=, 0([[L0]])
148 ; CHECK-NEXT: i32.const [[L2:.+]]=, 16
149 ; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L0]], [[L2]]
150 ; CHECK-NEXT: copy_local [[FP:.+]]=, [[SP]]
151 ; CHECK-NEXT: i32.const [[L3:.+]]=, __stack_pointer
152 ; CHECK-NEXT: i32.store {{.*}}=, 0([[L3]]), [[SP]]
153 %r1 = alloca i32
154 %r = alloca i32, i32 %alloc
155 store i32 0, i32* %r
156 ; CHECK: i32.const [[L3:.+]]=, 16
157 ; CHECK: i32.add [[SP]]=, [[FP]], [[L3]]
158 ; CHECK: i32.const [[L4:.+]]=, __stack_pointer
159 ; CHECK-NEXT: i32.store [[SP]]=, 0([[L4]]), [[SP]]
160 ret void
161}
162
163; TODO: test over-aligned alloca
164