derek.holloway
7502bf64a4
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106 lines
3.1 KiB
LLVM
106 lines
3.1 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -wasm-disable-explicit-locals -wasm-keep-registers | FileCheck %s -check-prefixes=NON-PIC,CHECK
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target triple = "wasm32-unknown-emscripten"
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@hidden_global = external hidden global i32
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@hidden_global_array = external hidden global [10 x i32]
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@external_global = external dso_local global i32
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@external_global_array = external dso_local global [10 x i32]
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declare i32 @foo();
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; For hidden symbols PIC code needs to offset all loads and stores
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; by the value of the __memory_base global
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define i32 @load_hidden_global() {
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; CHECK-LABEL: load_hidden_global:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT: i32.load $push1=, hidden_global($pop0){{$}}
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; CHECK-NEXT: end_function
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%1 = load i32, ptr @hidden_global
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ret i32 %1
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}
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define i32 @load_hidden_global_offset() {
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; CHECK-LABEL: load_hidden_global_offset:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT:i32.load $push1=, hidden_global_array+20($pop0){{$}}
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; CHECK-NEXT: end_function
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%1 = getelementptr [10 x i32], ptr @hidden_global_array, i32 0, i32 5
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%2 = load i32, ptr %1
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ret i32 %2
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}
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; Store to a hidden global
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define void @store_hidden_global(i32 %n) {
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; CHECK-LABEL: store_hidden_global:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT: i32.store hidden_global($pop0), $0{{$}}
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; CHECK-NEXT: end_function
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store i32 %n, ptr @hidden_global
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ret void
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}
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define void @store_hidden_global_offset(i32 %n) {
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; CHECK-LABEL: store_hidden_global_offset:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT: i32.store hidden_global_array+20($pop0), $0{{$}}
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; CHECK-NEXT: end_function
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%1 = getelementptr [10 x i32], ptr @hidden_global_array, i32 0, i32 5
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store i32 %n, ptr %1
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ret void
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}
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; For non-hidden globals PIC code has to load the address from a wasm global
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; using the @GOT relocation type.
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define i32 @load_external_global() {
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; CHECK-LABEL: load_external_global:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT: i32.load $push1=, external_global($pop0){{$}}
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; CHECK-NEXT: end_function
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%1 = load i32, ptr @external_global
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ret i32 %1
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}
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define i32 @load_external_global_offset() {
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; CHECK-LABEL: load_external_global_offset:
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; NON-PIC: i32.const $push[[L0:[0-9]+]]=, 0{{$}}
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; NON-PIC-NEXT: i32.load $push{{[0-9]+}}=, external_global_array+20($pop[[L0]]){{$}}
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; CHECK-NEXT: end_function
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%1 = getelementptr [10 x i32], ptr @external_global_array, i32 0, i32 5
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%2 = load i32, ptr %1
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ret i32 %2
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}
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; Store to a non-hidden global via the wasm global.
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define void @store_external_global(i32 %n) {
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; CHECK-LABEL: store_external_global:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT: i32.store external_global($pop0), $0{{$}}
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; CHECK-NEXT: end_function
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store i32 %n, ptr @external_global
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ret void
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}
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define void @store_external_global_offset(i32 %n) {
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; CHECK-LABEL: store_external_global_offset:
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; NON-PIC: i32.const $push0=, 0{{$}}
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; NON-PIC-NEXT: i32.store external_global_array+20($pop0), $0{{$}}
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; CHECK-NEXT: end_function
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%1 = getelementptr [10 x i32], ptr @external_global_array, i32 0, i32 5
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store i32 %n, ptr %1
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ret void
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}
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