1 # RUN: llc -o /dev/null %s -mtriple=aarch64-apple-ios -run-pass=aarch64-collect-loh -debug-only=aarch64-collect-loh 2>&1 | FileCheck %s
4 define void @func0() { ret void }
6 declare void @extfunc()
8 @g0 = external global i32
9 @g1 = external global i32
10 @g2 = external global i32
11 @g3 = external global i32
12 @g4 = external global i32
13 @g5 = external global i32
16 # Check various LOH variants. Remember that the algorithms walks the basic
18 # CHECK-LABEL: ********** AArch64 Collect LOH **********
19 # CHECK-LABEL: Looking in function func0
21 tracksRegLiveness: true
24 ; CHECK: Adding MCLOH_AdrpAdrp:
25 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3
26 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g4
27 ; CHECK-NEXT: Adding MCLOH_AdrpAdrp:
28 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g2
29 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3
30 ; CHECK-NEXT: Adding MCLOH_AdrpAdrp:
31 ; CHECK-NEXT: $x0 = ADRP target-flags(aarch64-page) @g0
32 ; CHECK-NEXT: $x0 = ADRP target-flags(aarch64-page) @g1
33 $x0 = ADRP target-flags(aarch64-page) @g0
34 $x0 = ADRP target-flags(aarch64-page) @g1
35 $x1 = ADRP target-flags(aarch64-page) @g2
36 $x1 = ADRP target-flags(aarch64-page) @g3
37 $x1 = ADRP target-flags(aarch64-page) @g4
40 ; CHECK-NEXT: Adding MCLOH_AdrpAdd:
41 ; CHECK-NEXT: $x20 = ADRP target-flags(aarch64-page) @g0
42 ; CHECK-NEXT: $x3 = ADDXri $x20, target-flags(aarch64-pageoff) @g0
43 ; CHECK-NEXT: Adding MCLOH_AdrpAdd:
44 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g0
45 ; CHECK-NEXT: $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g0
46 $x1 = ADRP target-flags(aarch64-page) @g0
47 $x9 = SUBXri undef $x11, 5, 0 ; should not affect MCLOH formation
48 $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g0, 0
49 $x20 = ADRP target-flags(aarch64-page) @g0
50 BL @extfunc, csr_aarch64_aapcs ; should not clobber X20
51 $x3 = ADDXri $x20, target-flags(aarch64-pageoff) @g0, 0
54 ; CHECK-NOT: MCLOH_AdrpAdd
55 $x9 = ADRP target-flags(aarch64-page) @g0
56 BL @extfunc, csr_aarch64_aapcs ; clobbers x9
57 ; Verification requires the use of 'undef' in front of the clobbered $x9
58 $x9 = ADDXri undef $x9, target-flags(aarch64-pageoff) @g0, 0
61 ; CHECK-NOT: MCLOH_AdrpAdd
62 $x10 = ADRP target-flags(aarch64-page) @g0
63 HINT 0, implicit def $x10 ; clobbers x10
64 $x10 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
67 ; Cannot produce a LOH for multiple users
68 ; CHECK-NOT: MCLOH_AdrpAdd
69 $x10 = ADRP target-flags(aarch64-page) @g0
70 HINT 0, implicit def $x10 ; clobbers x10
71 $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
72 $x12 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
75 ; CHECK-NEXT: Adding MCLOH_AdrpLdr:
76 ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g2
77 ; CHECK-NEXT: $s6 = LDRSui $x5, target-flags(aarch64-pageoff) @g2
78 ; CHECK-NEXT: Adding MCLOH_AdrpLdr:
79 ; CHECK-NEXT: $x4 = ADRP target-flags(aarch64-page) @g2
80 ; CHECK-NEXT: $x4 = LDRXui $x4, target-flags(aarch64-pageoff) @g2
81 $x4 = ADRP target-flags(aarch64-page) @g2
82 $x4 = LDRXui $x4, target-flags(aarch64-pageoff) @g2
83 $x5 = ADRP target-flags(aarch64-page) @g2
84 $s6 = LDRSui $x5, target-flags(aarch64-pageoff) @g2
87 ; CHECK-NEXT: Adding MCLOH_AdrpLdrGot:
88 ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page, aarch64-got) @g2
89 ; CHECK-NEXT: $x6 = LDRXui $x5, target-flags(aarch64-pageoff, aarch64-got) @g2
90 ; CHECK-NEXT: Adding MCLOH_AdrpLdrGot:
91 ; CHECK-NEXT: $x4 = ADRP target-flags(aarch64-page, aarch64-got) @g2
92 ; CHECK-NEXT: $x4 = LDRXui $x4, target-flags(aarch64-pageoff, aarch64-got) @g2
93 $x4 = ADRP target-flags(aarch64-page, aarch64-got) @g2
94 $x4 = LDRXui $x4, target-flags(aarch64-pageoff, aarch64-got) @g2
95 $x5 = ADRP target-flags(aarch64-page, aarch64-got) @g2
96 $x6 = LDRXui $x5, target-flags(aarch64-pageoff, aarch64-got) @g2
99 ; CHECK-NOT: Adding MCLOH_AdrpLdrGot:
100 ; Loading a float value from a GOT table makes no sense so this should not
102 $x11 = ADRP target-flags(aarch64-page, aarch64-got) @g5
103 $s11 = LDRSui $x11, target-flags(aarch64-pageoff, aarch64-got) @g5
106 ; CHECK-NEXT: Adding MCLOH_AdrpAddLdr:
107 ; CHECK-NEXT: $x7 = ADRP target-flags(aarch64-page) @g3
108 ; CHECK-NEXT: $x8 = ADDXri $x7, target-flags(aarch64-pageoff) @g3
109 ; CHECK-NEXT: $d1 = LDRDui $x8, 8
110 $x7 = ADRP target-flags(aarch64-page) @g3
111 $x8 = ADDXri $x7, target-flags(aarch64-pageoff) @g3, 0
115 ; CHECK-NEXT: Adding MCLOH_AdrpAdd:
116 ; CHECK-NEXT: $x3 = ADRP target-flags(aarch64-page) @g3
117 ; CHECK-NEXT: $x3 = ADDXri $x3, target-flags(aarch64-pageoff) @g3
118 ; CHECK-NEXT: Adding MCLOH_AdrpAdd:
119 ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g3
120 ; CHECK-NEXT: $x2 = ADDXri $x5, target-flags(aarch64-pageoff) @g3
121 ; CHECK-NEXT: Adding MCLOH_AdrpAddStr:
122 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3
123 ; CHECK-NEXT: $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g3
124 ; CHECK-NEXT: STRXui $xzr, $x1, 16
125 $x1 = ADRP target-flags(aarch64-page) @g3
126 $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g3, 0
129 ; This sequence should just produce an AdrpAdd (not AdrpAddStr)
130 $x5 = ADRP target-flags(aarch64-page) @g3
131 $x2 = ADDXri $x5, target-flags(aarch64-pageoff) @g3, 0
132 STRXui $x2, undef $x11, 16
134 ; This sequence should just produce an AdrpAdd (not AdrpAddStr)
135 $x3 = ADRP target-flags(aarch64-page) @g3
136 $x3 = ADDXri $x3, target-flags(aarch64-pageoff) @g3, 0
140 ; CHECK-NEXT: Adding MCLOH_AdrpLdr:
141 ; CHECK-NEXT: $x2 = ADRP target-flags(aarch64-page) @g3
142 ; CHECK-NEXT: $x2 = LDRXui $x2, target-flags(aarch64-pageoff) @g3
143 ; CHECK-NEXT: Adding MCLOH_AdrpLdrGotLdr:
144 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
145 ; CHECK-NEXT: $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
146 ; CHECK-NEXT: $x1 = LDRXui $x1, 24
147 $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
148 $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
150 ; Should just produce a MCLOH_AdrpLdr (not MCLOH_AdrpLdrGotLdr)
151 $x2 = ADRP target-flags(aarch64-page) @g3
152 $x2 = LDRXui $x2, target-flags(aarch64-pageoff) @g3
156 ; CHECK-NEXT: Adding MCLOH_AdrpLdr
157 ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g1
158 ; CHECK-NEXT: $x5 = LDRXui $x5, target-flags(aarch64-pageoff) @g1
159 ; CHECK-NEXT: Adding MCLOH_AdrpLdrGotStr:
160 ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
161 ; CHECK-NEXT: $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
162 ; CHECK-NEXT: STRXui $xzr, $x1, 32
163 $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
164 $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
166 ; Should just produce a MCLOH_AdrpLdr (not MCLOH_AdrpLdrGotStr)
167 $x5 = ADRP target-flags(aarch64-page) @g1
168 $x5 = LDRXui $x5, target-flags(aarch64-pageoff) @g1
169 STRXui undef $x11, $x5, 32
172 ; CHECK-NOT: MCLOH_AdrpAdrp
173 ; CHECK: Adding MCLOH_AdrpAddLdr
175 ; $x9 = ADDXri $x9, @g4
176 ; $x5 = LDRXui $x9, 0
177 $x9 = ADRP target-flags(aarch64-page, aarch64-got) @g4
178 $x9 = ADDXri $x9, target-flags(aarch64-pageoff, aarch64-got) @g4, 0
180 $x9 = ADRP target-flags(aarch64-page, aarch64-got) @g5
183 ; Cannot produce a LOH for multiple users
184 ; CHECK-NOT: MCLOH_AdrpAdd
185 $x10 = ADRP target-flags(aarch64-page) @g0
186 $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
191 $x12 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0