xref: /llvm-project/llvm/test/CodeGen/AArch64/csr-split.ll (revision cbdccb30c23f71f20d05b19256232419e7c5e517) 
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -verify-machineinstrs -mtriple=aarch64-unknown-linux < %s | FileCheck %s
3; RUN: llc -verify-machineinstrs -mtriple=arm64-apple-ios < %s | FileCheck %s --check-prefix=CHECK-APPLE
4
5; Check CSR split can work properly for tests below.
6
7@a = common dso_local local_unnamed_addr global i32 0, align 4
8
9define dso_local signext i32 @test1(ptr %b) local_unnamed_addr uwtable  {
10; CHECK-LABEL: test1:
11; CHECK:       // %bb.0: // %entry
12; CHECK-NEXT:    adrp x8, a
13; CHECK-NEXT:    ldrsw x8, [x8, :lo12:a]
14; CHECK-NEXT:    cmp x8, x0
15; CHECK-NEXT:    b.eq .LBB0_2
16; CHECK-NEXT:  // %bb.1: // %if.end
17; CHECK-NEXT:    ret
18; CHECK-NEXT:  .LBB0_2: // %if.then
19; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
20; CHECK-NEXT:    .cfi_def_cfa_offset 16
21; CHECK-NEXT:    .cfi_offset w19, -8
22; CHECK-NEXT:    .cfi_offset w30, -16
23; CHECK-NEXT:    mov x19, x0
24; CHECK-NEXT:    bl callVoid
25; CHECK-NEXT:    mov x0, x19
26; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
27; CHECK-NEXT:    .cfi_def_cfa_offset 0
28; CHECK-NEXT:    .cfi_restore w19
29; CHECK-NEXT:    .cfi_restore w30
30; CHECK-NEXT:    b callNonVoid
31;
32; CHECK-APPLE-LABEL: test1:
33; CHECK-APPLE:       ; %bb.0: ; %entry
34; CHECK-APPLE-NEXT:  Lloh0:
35; CHECK-APPLE-NEXT:    adrp x8, _a@PAGE
36; CHECK-APPLE-NEXT:  Lloh1:
37; CHECK-APPLE-NEXT:    ldrsw x8, [x8, _a@PAGEOFF]
38; CHECK-APPLE-NEXT:    cmp x8, x0
39; CHECK-APPLE-NEXT:    b.eq LBB0_2
40; CHECK-APPLE-NEXT:  ; %bb.1: ; %if.end
41; CHECK-APPLE-NEXT:    ret
42; CHECK-APPLE-NEXT:  LBB0_2: ; %if.then
43; CHECK-APPLE-NEXT:    stp x20, x19, [sp, #-32]! ; 16-byte Folded Spill
44; CHECK-APPLE-NEXT:    .cfi_def_cfa_offset 32
45; CHECK-APPLE-NEXT:    stp x29, x30, [sp, #16] ; 16-byte Folded Spill
46; CHECK-APPLE-NEXT:    .cfi_offset w30, -8
47; CHECK-APPLE-NEXT:    .cfi_offset w29, -16
48; CHECK-APPLE-NEXT:    .cfi_offset w19, -24
49; CHECK-APPLE-NEXT:    .cfi_offset w20, -32
50; CHECK-APPLE-NEXT:    mov x19, x0
51; CHECK-APPLE-NEXT:    bl _callVoid
52; CHECK-APPLE-NEXT:    ldp x29, x30, [sp, #16] ; 16-byte Folded Reload
53; CHECK-APPLE-NEXT:    mov x0, x19
54; CHECK-APPLE-NEXT:    ldp x20, x19, [sp], #32 ; 16-byte Folded Reload
55; CHECK-APPLE-NEXT:    .cfi_def_cfa_offset 0
56; CHECK-APPLE-NEXT:    .cfi_restore w30
57; CHECK-APPLE-NEXT:    .cfi_restore w29
58; CHECK-APPLE-NEXT:    .cfi_restore w19
59; CHECK-APPLE-NEXT:    .cfi_restore w20
60; CHECK-APPLE-NEXT:    b _callNonVoid
61; CHECK-APPLE-NEXT:    .loh AdrpLdr Lloh0, Lloh1
62entry:
63  %0 = load i32, ptr @a, align 4, !tbaa !2
64  %conv = sext i32 %0 to i64
65  %1 = inttoptr i64 %conv to ptr
66  %cmp = icmp eq ptr %1, %b
67  br i1 %cmp, label %if.then, label %if.end
68
69if.then:                                          ; preds = %entry
70  %call = tail call signext i32 @callVoid()
71  %call2 = tail call signext i32 @callNonVoid(ptr %b)
72  br label %if.end
73
74if.end:                                           ; preds = %if.then, %entry
75  %retval.0 = phi i32 [ %call2, %if.then ], [ undef, %entry ]
76  ret i32 %retval.0
77}
78
79declare signext i32 @callVoid(...) local_unnamed_addr
80
81declare signext i32 @callNonVoid(ptr) local_unnamed_addr
82
83define dso_local signext i32 @test2(ptr %p1) local_unnamed_addr uwtable  {
84; CHECK-LABEL: test2:
85; CHECK:       // %bb.0: // %entry
86; CHECK-NEXT:    cbz x0, .LBB1_3
87; CHECK-NEXT:  // %bb.1: // %entry
88; CHECK-NEXT:    adrp x8, a
89; CHECK-NEXT:    ldrsw x8, [x8, :lo12:a]
90; CHECK-NEXT:    cmp x8, x0
91; CHECK-NEXT:    b.ne .LBB1_3
92; CHECK-NEXT:  // %bb.2: // %if.then2
93; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
94; CHECK-NEXT:    .cfi_def_cfa_offset 16
95; CHECK-NEXT:    .cfi_offset w19, -8
96; CHECK-NEXT:    .cfi_offset w30, -16
97; CHECK-NEXT:    mov x19, x0
98; CHECK-NEXT:    bl callVoid
99; CHECK-NEXT:    mov x0, x19
100; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
101; CHECK-NEXT:    .cfi_def_cfa_offset 0
102; CHECK-NEXT:    .cfi_restore w19
103; CHECK-NEXT:    .cfi_restore w30
104; CHECK-NEXT:    b callNonVoid
105; CHECK-NEXT:  .LBB1_3: // %return
106; CHECK-NEXT:    mov w0, wzr
107; CHECK-NEXT:    ret
108;
109; CHECK-APPLE-LABEL: test2:
110; CHECK-APPLE:       ; %bb.0: ; %entry
111; CHECK-APPLE-NEXT:    cbz x0, LBB1_3
112; CHECK-APPLE-NEXT:  ; %bb.1: ; %entry
113; CHECK-APPLE-NEXT:  Lloh2:
114; CHECK-APPLE-NEXT:    adrp x8, _a@PAGE
115; CHECK-APPLE-NEXT:  Lloh3:
116; CHECK-APPLE-NEXT:    ldrsw x8, [x8, _a@PAGEOFF]
117; CHECK-APPLE-NEXT:    cmp x8, x0
118; CHECK-APPLE-NEXT:    b.ne LBB1_3
119; CHECK-APPLE-NEXT:  ; %bb.2: ; %if.then2
120; CHECK-APPLE-NEXT:    stp x20, x19, [sp, #-32]! ; 16-byte Folded Spill
121; CHECK-APPLE-NEXT:    .cfi_def_cfa_offset 32
122; CHECK-APPLE-NEXT:    stp x29, x30, [sp, #16] ; 16-byte Folded Spill
123; CHECK-APPLE-NEXT:    .cfi_offset w30, -8
124; CHECK-APPLE-NEXT:    .cfi_offset w29, -16
125; CHECK-APPLE-NEXT:    .cfi_offset w19, -24
126; CHECK-APPLE-NEXT:    .cfi_offset w20, -32
127; CHECK-APPLE-NEXT:    mov x19, x0
128; CHECK-APPLE-NEXT:    bl _callVoid
129; CHECK-APPLE-NEXT:    ldp x29, x30, [sp, #16] ; 16-byte Folded Reload
130; CHECK-APPLE-NEXT:    mov x0, x19
131; CHECK-APPLE-NEXT:    ldp x20, x19, [sp], #32 ; 16-byte Folded Reload
132; CHECK-APPLE-NEXT:    .cfi_def_cfa_offset 0
133; CHECK-APPLE-NEXT:    .cfi_restore w30
134; CHECK-APPLE-NEXT:    .cfi_restore w29
135; CHECK-APPLE-NEXT:    .cfi_restore w19
136; CHECK-APPLE-NEXT:    .cfi_restore w20
137; CHECK-APPLE-NEXT:    b _callNonVoid
138; CHECK-APPLE-NEXT:  LBB1_3: ; %return
139; CHECK-APPLE-NEXT:    mov w0, wzr
140; CHECK-APPLE-NEXT:    ret
141; CHECK-APPLE-NEXT:    .loh AdrpLdr Lloh2, Lloh3
142entry:
143  %tobool = icmp eq ptr %p1, null
144  br i1 %tobool, label %return, label %if.end
145
146if.end:                                           ; preds = %entry
147  %0 = load i32, ptr @a, align 4, !tbaa !2
148  %conv = sext i32 %0 to i64
149  %1 = inttoptr i64 %conv to ptr
150  %cmp = icmp eq ptr %1, %p1
151  br i1 %cmp, label %if.then2, label %return
152
153if.then2:                                         ; preds = %if.end
154  %call = tail call signext i32 @callVoid()
155  %call3 = tail call signext i32 @callNonVoid(ptr nonnull %p1)
156  br label %return
157
158return:                                           ; preds = %if.end, %entry, %if.then2
159  %retval.0 = phi i32 [ %call3, %if.then2 ], [ 0, %entry ], [ 0, %if.end ]
160  ret i32 %retval.0
161}
162
163
164define dso_local ptr @test3(ptr nocapture %p1, i8 zeroext %p2) local_unnamed_addr uwtable  {
165; CHECK-LABEL: test3:
166; CHECK:       // %bb.0: // %entry
167; CHECK-NEXT:    str x30, [sp, #-32]! // 8-byte Folded Spill
168; CHECK-NEXT:    .cfi_def_cfa_offset 32
169; CHECK-NEXT:    stp x20, x19, [sp, #16] // 16-byte Folded Spill
170; CHECK-NEXT:    .cfi_offset w19, -8
171; CHECK-NEXT:    .cfi_offset w20, -16
172; CHECK-NEXT:    .cfi_offset w30, -32
173; CHECK-NEXT:    ldr x19, [x0]
174; CHECK-NEXT:    cbz x19, .LBB2_2
175; CHECK-NEXT:  // %bb.1: // %land.rhs
176; CHECK-NEXT:    mov x20, x0
177; CHECK-NEXT:    mov x0, x19
178; CHECK-NEXT:    bl bar
179; CHECK-NEXT:    str x0, [x20]
180; CHECK-NEXT:  .LBB2_2: // %land.end
181; CHECK-NEXT:    mov x0, x19
182; CHECK-NEXT:    ldp x20, x19, [sp, #16] // 16-byte Folded Reload
183; CHECK-NEXT:    ldr x30, [sp], #32 // 8-byte Folded Reload
184; CHECK-NEXT:    .cfi_def_cfa_offset 0
185; CHECK-NEXT:    .cfi_restore w19
186; CHECK-NEXT:    .cfi_restore w20
187; CHECK-NEXT:    .cfi_restore w30
188; CHECK-NEXT:    ret
189;
190; CHECK-APPLE-LABEL: test3:
191; CHECK-APPLE:       ; %bb.0: ; %entry
192; CHECK-APPLE-NEXT:    stp x20, x19, [sp, #-32]! ; 16-byte Folded Spill
193; CHECK-APPLE-NEXT:    .cfi_def_cfa_offset 32
194; CHECK-APPLE-NEXT:    stp x29, x30, [sp, #16] ; 16-byte Folded Spill
195; CHECK-APPLE-NEXT:    .cfi_offset w30, -8
196; CHECK-APPLE-NEXT:    .cfi_offset w29, -16
197; CHECK-APPLE-NEXT:    .cfi_offset w19, -24
198; CHECK-APPLE-NEXT:    .cfi_offset w20, -32
199; CHECK-APPLE-NEXT:    ldr x19, [x0]
200; CHECK-APPLE-NEXT:    cbz x19, LBB2_2
201; CHECK-APPLE-NEXT:  ; %bb.1: ; %land.rhs
202; CHECK-APPLE-NEXT:    mov x20, x0
203; CHECK-APPLE-NEXT:    mov x0, x19
204; CHECK-APPLE-NEXT:    bl _bar
205; CHECK-APPLE-NEXT:    str x0, [x20]
206; CHECK-APPLE-NEXT:  LBB2_2: ; %land.end
207; CHECK-APPLE-NEXT:    ldp x29, x30, [sp, #16] ; 16-byte Folded Reload
208; CHECK-APPLE-NEXT:    mov x0, x19
209; CHECK-APPLE-NEXT:    ldp x20, x19, [sp], #32 ; 16-byte Folded Reload
210; CHECK-APPLE-NEXT:    .cfi_def_cfa_offset 0
211; CHECK-APPLE-NEXT:    .cfi_restore w30
212; CHECK-APPLE-NEXT:    .cfi_restore w29
213; CHECK-APPLE-NEXT:    .cfi_restore w19
214; CHECK-APPLE-NEXT:    .cfi_restore w20
215; CHECK-APPLE-NEXT:    ret
216entry:
217  %0 = load ptr, ptr %p1, align 8, !tbaa !6
218  %tobool = icmp eq ptr %0, null
219  br i1 %tobool, label %land.end, label %land.rhs
220
221land.rhs:                                         ; preds = %entry
222  %call = tail call ptr @bar(ptr nonnull %0, i8 zeroext %p2)
223  store ptr %call, ptr %p1, align 8, !tbaa !6
224  br label %land.end
225
226land.end:                                         ; preds = %entry, %land.rhs
227  ret ptr %0
228}
229
230declare ptr @bar(ptr, i8 zeroext) local_unnamed_addr
231
232
233!llvm.module.flags = !{!0}
234!llvm.ident = !{!1}
235
236!0 = !{i32 1, !"wchar_size", i32 4}
237!1 = !{!"clang version 10.0.0 (trunk 367381) (llvm/trunk 367388)"}
238!2 = !{!3, !3, i64 0}
239!3 = !{!"int", !4, i64 0}
240!4 = !{!"omnipotent char", !5, i64 0}
241!5 = !{!"Simple C/C++ TBAA"}
242!6 = !{!7, !7, i64 0}
243!7 = !{!"any pointer", !4, i64 0}
244