1 ; RUN: llc -mtriple=aarch64-apple-ios -asm-verbose=false -aarch64-collect-loh=false \
2 ; RUN: -aarch64-global-merge -global-merge-group-by-use -global-merge-ignore-single-use=false \
3 ; RUN: %s -o - | FileCheck %s
5 ; We assume that globals of the same size aren't reordered inside a set.
7 ; Check that we create two MergedGlobal instances for two functions using
8 ; disjoint sets of globals
10 @m1 = internal global i32 0, align 4
11 @n1 = internal global i32 0, align 4
14 define void @f1(i32 %a1, i32 %a2) #0 {
15 ; CHECK-NEXT: adrp x8, [[SET1:l__MergedGlobals.[0-9]*]]@PAGE
16 ; CHECK-NEXT: add x8, x8, [[SET1]]@PAGEOFF
17 ; CHECK-NEXT: stp w0, w1, [x8]
19 store i32 %a1, i32* @m1, align 4
20 store i32 %a2, i32* @n1, align 4
24 @m2 = internal global i32 0, align 4
25 @n2 = internal global i32 0, align 4
26 @o2 = internal global i32 0, align 4
29 define void @f2(i32 %a1, i32 %a2, i32 %a3) #0 {
30 ; CHECK-NEXT: adrp x8, [[SET2:l__MergedGlobals.[0-9]*]]@PAGE
31 ; CHECK-NEXT: add x8, x8, [[SET2]]@PAGEOFF
32 ; CHECK-NEXT: stp w0, w1, [x8]
33 ; CHECK-NEXT: str w2, [x8, #8]
35 store i32 %a1, i32* @m2, align 4
36 store i32 %a2, i32* @n2, align 4
37 store i32 %a3, i32* @o2, align 4
41 ; Sanity-check (don't worry about cost models) that we pick the biggest subset
42 ; of all global used "together" directly or indirectly. Here, that means
43 ; merging n3, m4, and n4 together, but ignoring m3.
45 @m3 = internal global i32 0, align 4
46 @n3 = internal global i32 0, align 4
49 define void @f3(i32 %a1, i32 %a2) #0 {
50 ; CHECK-NEXT: adrp x8, _m3@PAGE
51 ; CHECK-NEXT: adrp x9, [[SET3:l__MergedGlobals[0-9]*]]@PAGE
52 ; CHECK-NEXT: str w0, [x8, _m3@PAGEOFF]
53 ; CHECK-NEXT: str w1, [x9, [[SET3]]@PAGEOFF]
55 store i32 %a1, i32* @m3, align 4
56 store i32 %a2, i32* @n3, align 4
60 @m4 = internal global i32 0, align 4
61 @n4 = internal global i32 0, align 4
64 define void @f4(i32 %a1, i32 %a2, i32 %a3) #0 {
65 ; CHECK-NEXT: adrp x8, [[SET3]]@PAGE
66 ; CHECK-NEXT: add x8, x8, [[SET3]]@PAGEOFF
67 ; CHECK-NEXT: stp w0, w1, [x8, #4]
68 ; CHECK-NEXT: str w2, [x8]
70 store i32 %a1, i32* @m4, align 4
71 store i32 %a2, i32* @n4, align 4
72 store i32 %a3, i32* @n3, align 4
76 ; Finally, check that we don't do anything with one-element global sets.
77 @o5 = internal global i32 0, align 4
80 define void @f5(i32 %a1) #0 {
81 ; CHECK-NEXT: adrp x8, _o5@PAGE
82 ; CHECK-NEXT: str w0, [x8, _o5@PAGEOFF]
84 store i32 %a1, i32* @o5, align 4
88 ; CHECK-DAG: .zerofill __DATA,__bss,_o5,4,2
90 ; CHECK-DAG: .zerofill __DATA,__bss,[[SET1]],8,3
91 ; CHECK-DAG: .zerofill __DATA,__bss,[[SET2]],12,3
92 ; CHECK-DAG: .zerofill __DATA,__bss,[[SET3]],12,3
94 attributes #0 = { nounwind }