1; RUN: llc < %s -asm-verbose=false -wasm-disable-explicit-locals -wasm-keep-registers | FileCheck %s -check-prefixes=NON-PIC,CHECK 2 3target triple = "wasm32-unknown-emscripten" 4 5@hidden_global = external hidden global i32 6@hidden_global_array = external hidden global [10 x i32] 7@external_global = external dso_local global i32 8@external_global_array = external dso_local global [10 x i32] 9 10declare i32 @foo(); 11 12; For hidden symbols PIC code needs to offset all loads and stores 13; by the value of the __memory_base global 14 15define i32 @load_hidden_global() { 16; CHECK-LABEL: load_hidden_global: 17; NON-PIC: i32.const $push0=, 0{{$}} 18; NON-PIC-NEXT: i32.load $push1=, hidden_global($pop0){{$}} 19; CHECK-NEXT: end_function 20 21 %1 = load i32, ptr @hidden_global 22 ret i32 %1 23} 24 25define i32 @load_hidden_global_offset() { 26; CHECK-LABEL: load_hidden_global_offset: 27; NON-PIC: i32.const $push0=, 0{{$}} 28; NON-PIC-NEXT:i32.load $push1=, hidden_global_array+20($pop0){{$}} 29; CHECK-NEXT: end_function 30 31 %1 = getelementptr [10 x i32], ptr @hidden_global_array, i32 0, i32 5 32 %2 = load i32, ptr %1 33 ret i32 %2 34} 35 36; Store to a hidden global 37 38define void @store_hidden_global(i32 %n) { 39; CHECK-LABEL: store_hidden_global: 40; NON-PIC: i32.const $push0=, 0{{$}} 41; NON-PIC-NEXT: i32.store hidden_global($pop0), $0{{$}} 42; CHECK-NEXT: end_function 43 44 store i32 %n, ptr @hidden_global 45 ret void 46} 47 48define void @store_hidden_global_offset(i32 %n) { 49; CHECK-LABEL: store_hidden_global_offset: 50; NON-PIC: i32.const $push0=, 0{{$}} 51; NON-PIC-NEXT: i32.store hidden_global_array+20($pop0), $0{{$}} 52; CHECK-NEXT: end_function 53 54 %1 = getelementptr [10 x i32], ptr @hidden_global_array, i32 0, i32 5 55 store i32 %n, ptr %1 56 ret void 57} 58 59; For non-hidden globals PIC code has to load the address from a wasm global 60; using the @GOT relocation type. 61 62 63define i32 @load_external_global() { 64; CHECK-LABEL: load_external_global: 65; NON-PIC: i32.const $push0=, 0{{$}} 66; NON-PIC-NEXT: i32.load $push1=, external_global($pop0){{$}} 67; CHECK-NEXT: end_function 68 69 %1 = load i32, ptr @external_global 70 ret i32 %1 71} 72 73define i32 @load_external_global_offset() { 74; CHECK-LABEL: load_external_global_offset: 75; NON-PIC: i32.const $push[[L0:[0-9]+]]=, 0{{$}} 76; NON-PIC-NEXT: i32.load $push{{[0-9]+}}=, external_global_array+20($pop[[L0]]){{$}} 77; CHECK-NEXT: end_function 78 79 %1 = getelementptr [10 x i32], ptr @external_global_array, i32 0, i32 5 80 %2 = load i32, ptr %1 81 ret i32 %2 82} 83 84; Store to a non-hidden global via the wasm global. 85 86define void @store_external_global(i32 %n) { 87; CHECK-LABEL: store_external_global: 88; NON-PIC: i32.const $push0=, 0{{$}} 89; NON-PIC-NEXT: i32.store external_global($pop0), $0{{$}} 90; CHECK-NEXT: end_function 91 92 store i32 %n, ptr @external_global 93 ret void 94} 95 96define void @store_external_global_offset(i32 %n) { 97; CHECK-LABEL: store_external_global_offset: 98; NON-PIC: i32.const $push0=, 0{{$}} 99; NON-PIC-NEXT: i32.store external_global_array+20($pop0), $0{{$}} 100; CHECK-NEXT: end_function 101 102 %1 = getelementptr [10 x i32], ptr @external_global_array, i32 0, i32 5 103 store i32 %n, ptr %1 104 ret void 105} 106