1 ; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=static -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM,CHECK-STATIC
2 ; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=pic -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM,CHECK-PIC
3 ; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=ropi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM
4 ; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=rwpi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM
5 ; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=static -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB
6 ; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=pic -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB
7 ; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=ropi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB
8 ; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=rwpi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB
9 ; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=static -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M
10 ; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=pic -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M
11 ; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=ropi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M
12 ; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=rwpi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M
14 @.str = private unnamed_addr constant [2 x i8] c"s\00", align 1
15 @.str1 = private unnamed_addr constant [69 x i8] c"this string is far too long to fit in a literal pool by far and away\00", align 1
16 @.str2 = private unnamed_addr constant [27 x i8] c"this string is just right!\00", align 1
17 @.str3 = private unnamed_addr constant [26 x i8] c"this string is used twice\00", align 1
18 @.str4 = private unnamed_addr constant [29 x i8] c"same string in two functions\00", align 1
19 @.str5 = private unnamed_addr constant [2 x i8] c"s\00", align 1
20 @.arr1 = private unnamed_addr constant [2 x i16] [i16 3, i16 4], align 2
21 @.arr2 = private unnamed_addr constant [2 x i16] [i16 7, i16 8], align 2
22 @.arr3 = private unnamed_addr constant [2 x ptr] [ptr null, ptr null], align 4
23 @.ptr = private unnamed_addr constant [2 x ptr] [ptr @.arr2, ptr null], align 2
24 @.arr4 = private unnamed_addr constant [2 x i16] [i16 3, i16 4], align 16
25 @.arr5 = private unnamed_addr constant [2 x i16] [i16 3, i16 4], align 2
26 @.zerosize = private unnamed_addr constant [0 x i16] zeroinitializer, align 4
27 @implicit_alignment_vector = private unnamed_addr constant <4 x i32> <i32 1, i32 2, i32 3, i32 4>
30 ; CHECK: adr r0, [[x:.*]]
32 ; CHECK: .asciz "s\000\000"
33 define void @test1() #0 {
34 tail call void @a(ptr @.str) #2
38 declare void @a(ptr) #1
43 define void @test2() #0 {
44 tail call void @a(ptr @.str1) #2
49 ; CHECK: adr r0, [[x:.*]]
51 ; CHECK: .asciz "this string is just right!\000"
52 define void @test3() #0 {
53 tail call void @a(ptr @.str2) #2
59 ; CHECK: adr r{{.*}}, [[x:.*]]
61 ; CHECK: .asciz "this string is used twice\000\000"
62 define void @test4() #0 {
63 tail call void @a(ptr @.str3) #2
64 tail call void @a(ptr @.str3) #2
68 ; CHECK-LABEL: @test5a
70 define void @test5a() #0 {
71 tail call void @a(ptr @.str4) #2
75 define void @test5b() #0 {
76 tail call void @b(ptr @.str4) #2
80 ; CHECK-LABEL: @test6a
82 define void @test6a() #0 {
83 tail call void @c(ptr @.arr1) #2
87 ; CHECK-LABEL: @test6b
89 define void @test6b() #0 {
90 tail call void @c(ptr @.arr1) #2
94 ; This shouldn't be promoted, as the string is used by another global.
97 define void @test7() #0 {
98 tail call void @c(ptr @.arr2) #2
102 ; This can be promoted; it contains pointers, but they don't need relocations.
103 ; CHECK-LABEL: @test8
106 define void @test8() #0 {
107 %a = load ptr, ptr @.arr3
108 tail call void @c(ptr %a) #2
112 ; This can't be promoted in PIC mode because it contains pointers to other globals.
113 ; CHECK-LABEL: @test8a
114 ; CHECK-STATIC: .long .L.arr2
115 ; CHECK-PIC: .long .L.ptr
117 define void @test8a() #0 {
118 %a = load ptr, ptr @.ptr
119 tail call void @c(ptr %a) #2
123 @fn1.a = private unnamed_addr constant [4 x i16] [i16 4, i16 0, i16 0, i16 0], align 2
124 @fn2.a = private unnamed_addr constant [8 x i8] [i8 4, i8 0, i8 0, i8 0, i8 23, i8 0, i8 6, i8 0], align 1
126 ; Just check these don't crash.
127 define void @fn1() "target-features"="+strict-align" {
129 %a = alloca [4 x i16], align 2
130 call void @llvm.memcpy.p0.p0.i32(ptr align 2 %a, ptr align 2 @fn1.a, i32 8, i1 false)
134 define void @fn2() "target-features"="+strict-align" {
136 %a = alloca [8 x i8], align 2
137 call void @llvm.memcpy.p0.p0.i32(ptr %a, ptr @fn2.a, i32 16, i1 false)
141 ; This shouldn't be promoted, as the global requires >4 byte alignment.
142 ; CHECK-LABEL: @test9
144 define void @test9() #0 {
145 tail call void @c(ptr @.arr4) #2
149 ; Ensure that zero sized values are supported / not promoted.
150 ; CHECK-LABEL: @pr32130
152 define void @pr32130() #0 {
153 tail call void @c(ptr @.zerosize) #2
157 ; CHECK-LABEL: @test10
158 ; CHECK-V6M: adr r{{[0-9]*}}, [[x:.*]]
160 ; CHECK-V6M: .asciz "s\000\000"
161 ; CHECK-V7: ldrb{{(.w)?}} r{{[0-9]*}}, [[x:.*]]
163 ; CHECK-V7: .asciz "s\000\000"
164 define void @test10(ptr %a) local_unnamed_addr #0 {
165 call void @llvm.memmove.p0.p0.i32(ptr align 1 %a, ptr align 1 @.str5, i32 1, i1 false)
169 ; CHECK-LABEL: @test11
170 ; CHECK-V6M: adr r{{[0-9]*}}, [[x:.*]]
172 ; CHECK-V6M: .short 3
173 ; CHECK-V6M: .short 4
174 ; CHECK-V7THUMB: ldrh{{(.w)?}} r{{[0-9]*}}, [[x:.*]]
175 ; CHECK-V7THUMB: [[x]]:
176 ; CHECK-V7THUMB: .short 3
177 ; CHECK-V7THUMB: .short 4
178 ; CHECK-V7ARM: adr r{{[0-9]*}}, [[x:.*]]
179 ; CHECK-V7ARM: [[x]]:
180 ; CHECK-V7ARM: .short 3
181 ; CHECK-V7ARM: .short 4
182 define void @test11(ptr %a) local_unnamed_addr #0 {
183 call void @llvm.memmove.p0.p0.i32(ptr align 2 %a, ptr align 2 @.arr5, i32 2, i1 false)
187 ; Promotion only works with globals with alignment 4 or less; a vector has
188 ; implicit alignment 16.
189 ; CHECK-LABEL: @test12
191 define void @test12() local_unnamed_addr #0 {
192 call void @d(ptr @implicit_alignment_vector)
197 declare void @b(ptr) #1
198 declare void @c(ptr) #1
199 declare void @d(ptr) #1
200 declare void @llvm.memcpy.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1)
201 declare void @llvm.memmove.p0.p0.i32(ptr, ptr, i32, i1) local_unnamed_addr
203 attributes #0 = { nounwind "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
204 attributes #1 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
205 attributes #2 = { nounwind }
207 !llvm.module.flags = !{!0, !1}
209 !0 = !{i32 1, !"wchar_size", i32 4}
210 !1 = !{i32 1, !"min_enum_size", i32 4}