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1; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=static -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM,CHECK-STATIC2; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=pic -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM,CHECK-PIC3; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=ropi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM4; RUN: llc -mtriple armv7--linux-gnueabihf -relocation-model=rwpi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7ARM5; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=static -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB6; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=pic -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB7; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=ropi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB8; RUN: llc -mtriple thumbv7--linux-gnueabihf -relocation-model=rwpi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V7,CHECK-V7THUMB9; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=static -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M10; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=pic -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M11; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=ropi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M12; RUN: llc -mtriple thumbv6m--linux-gnueabihf -relocation-model=rwpi -arm-promote-constant < %s | FileCheck %s --check-prefixes=CHECK,CHECK-V6M13 14@.str = private unnamed_addr constant [2 x i8] c"s\00", align 115@.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 116@.str2 = private unnamed_addr constant [27 x i8] c"this string is just right!\00", align 117@.str3 = private unnamed_addr constant [26 x i8] c"this string is used twice\00", align 118@.str4 = private unnamed_addr constant [29 x i8] c"same string in two functions\00", align 119@.str5 = private unnamed_addr constant [2 x i8] c"s\00", align 120@.arr1 = private unnamed_addr constant [2 x i16] [i16 3, i16 4], align 221@.arr2 = private unnamed_addr constant [2 x i16] [i16 7, i16 8], align 222@.arr3 = private unnamed_addr constant [2 x ptr] [ptr null, ptr null], align 423@.ptr = private unnamed_addr constant [2 x ptr] [ptr @.arr2, ptr null], align 224@.arr4 = private unnamed_addr constant [2 x i16] [i16 3, i16 4], align 1625@.arr5 = private unnamed_addr constant [2 x i16] [i16 3, i16 4], align 226@.zerosize = private unnamed_addr constant [0 x i16] zeroinitializer, align 427@implicit_alignment_vector = private unnamed_addr constant <4 x i32> <i32 1, i32 2, i32 3, i32 4>28 29; CHECK-LABEL: @test130; CHECK: adr r0, [[x:.*]]31; CHECK: [[x]]:32; CHECK: .asciz "s\000\000"33define void @test1() #0 {34 tail call void @a(ptr @.str) #235 ret void36}37 38declare void @a(ptr) #139 40; CHECK-LABEL: @test241; CHECK-NOT: .asci42; CHECK: .fnend43define void @test2() #0 {44 tail call void @a(ptr @.str1) #245 ret void46}47 48; CHECK-LABEL: @test349; CHECK: adr r0, [[x:.*]]50; CHECK: [[x]]:51; CHECK: .asciz "this string is just right!\000"52define void @test3() #0 {53 tail call void @a(ptr @.str2) #254 ret void55}56 57 58; CHECK-LABEL: @test459; CHECK: adr r{{.*}}, [[x:.*]]60; CHECK: [[x]]:61; CHECK: .asciz "this string is used twice\000\000"62define void @test4() #0 {63 tail call void @a(ptr @.str3) #264 tail call void @a(ptr @.str3) #265 ret void66}67 68; CHECK-LABEL: @test5a69; CHECK-NOT: adr70define void @test5a() #0 {71 tail call void @a(ptr @.str4) #272 ret void73}74 75define void @test5b() #0 {76 tail call void @b(ptr @.str4) #277 ret void78}79 80; CHECK-LABEL: @test6a81; CHECK: L.arr182define void @test6a() #0 {83 tail call void @c(ptr @.arr1) #284 ret void85}86 87; CHECK-LABEL: @test6b88; CHECK: L.arr189define void @test6b() #0 {90 tail call void @c(ptr @.arr1) #291 ret void92}93 94; This shouldn't be promoted, as the string is used by another global.95; CHECK-LABEL: @test796; CHECK-NOT: adr97define void @test7() #0 {98 tail call void @c(ptr @.arr2) #299 ret void 100}101 102; This can be promoted; it contains pointers, but they don't need relocations.103; CHECK-LABEL: @test8104; CHECK: .zero105; CHECK: .fnend106define void @test8() #0 {107 %a = load ptr, ptr @.arr3108 tail call void @c(ptr %a) #2109 ret void110}111 112; This can't be promoted in PIC mode because it contains pointers to other globals.113; CHECK-LABEL: @test8a114; CHECK-STATIC: .long .L.arr2115; CHECK-PIC: .long .L.ptr116; CHECK: .fnend117define void @test8a() #0 {118 %a = load ptr, ptr @.ptr119 tail call void @c(ptr %a) #2120 ret void121}122 123@fn1.a = private unnamed_addr constant [4 x i16] [i16 4, i16 0, i16 0, i16 0], align 2124@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 1125 126; Just check these don't crash.127define void @fn1() "target-features"="+strict-align" {128entry:129 %a = alloca [4 x i16], align 2130 call void @llvm.memcpy.p0.p0.i32(ptr align 2 %a, ptr align 2 @fn1.a, i32 8, i1 false)131 ret void132}133 134define void @fn2() "target-features"="+strict-align" {135entry:136 %a = alloca [8 x i8], align 2137 call void @llvm.memcpy.p0.p0.i32(ptr %a, ptr @fn2.a, i32 16, i1 false)138 ret void139}140 141; This shouldn't be promoted, as the global requires >4 byte alignment.142; CHECK-LABEL: @test9143; CHECK-NOT: adr144define void @test9() #0 {145 tail call void @c(ptr @.arr4) #2146 ret void147}148 149; Ensure that zero sized values are supported / not promoted.150; CHECK-LABEL: @pr32130151; CHECK-NOT: adr152define void @pr32130() #0 {153 tail call void @c(ptr @.zerosize) #2154 ret void155}156 157; CHECK-LABEL: @test10158; CHECK-V6M: adr r{{[0-9]*}}, [[x:.*]]159; CHECK-V6M: [[x]]:160; CHECK-V6M: .asciz "s\000\000"161; CHECK-V7: ldrb{{(.w)?}} r{{[0-9]*}}, [[x:.*]]162; CHECK-V7: [[x]]:163; CHECK-V7: .asciz "s\000\000"164define 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)166 ret void167}168 169; CHECK-LABEL: @test11170; CHECK-V6M: adr r{{[0-9]*}}, [[x:.*]]171; CHECK-V6M: [[x]]:172; CHECK-V6M: .short 3173; CHECK-V6M: .short 4174; CHECK-V7THUMB: ldrh{{(.w)?}} r{{[0-9]*}}, [[x:.*]]175; CHECK-V7THUMB: [[x]]:176; CHECK-V7THUMB: .short 3177; CHECK-V7THUMB: .short 4178; CHECK-V7ARM: adr r{{[0-9]*}}, [[x:.*]]179; CHECK-V7ARM: [[x]]:180; CHECK-V7ARM: .short 3181; CHECK-V7ARM: .short 4182define 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)184 ret void185}186 187; Promotion only works with globals with alignment 4 or less; a vector has188; implicit alignment 16.189; CHECK-LABEL: @test12190; CHECK-NOT: adr191define void @test12() local_unnamed_addr #0 {192 call void @d(ptr @implicit_alignment_vector)193 ret void194}195 196 197declare void @b(ptr) #1198declare void @c(ptr) #1199declare void @d(ptr) #1200declare void @llvm.memcpy.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1)201declare void @llvm.memmove.p0.p0.i32(ptr, ptr, i32, i1) local_unnamed_addr202 203attributes #0 = { nounwind "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }204attributes #1 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }205attributes #2 = { nounwind }206 207!llvm.module.flags = !{!0, !1}208 209!0 = !{i32 1, !"wchar_size", i32 4}210!1 = !{i32 1, !"min_enum_size", i32 4}211