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[WebAssembly] Add __start_/_stop_ symbols for data sections
Fixes https://bugs.llvm.org/show_bug.cgi?id=41565 Differential Revision: https://reviews.llvm.org/D61876 llvm-svn: 361236
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,57 @@ | ||
; RUN: llc -filetype=obj -o %t.o %s | ||
; RUN: wasm-ld --no-gc-sections %t.o -o %t.wasm | ||
; RUN: obj2yaml %t.wasm | FileCheck %s | ||
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target triple = "wasm32-unknown-unknown" | ||
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@foo = global i32 3, section "mysection", align 4 | ||
@bar = global i32 4, section "mysection", align 4 | ||
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@__start_mysection = external global i8* | ||
@__stop_mysection = external global i8* | ||
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define i8** @get_start() { | ||
ret i8** @__start_mysection | ||
} | ||
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define i8** @get_end() { | ||
ret i8** @__stop_mysection | ||
} | ||
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define void @_start() { | ||
entry: | ||
ret void | ||
} | ||
; CHECK: - Type: CODE | ||
; CHECK-NEXT: Functions: | ||
; CHECK-NEXT: - Index: 0 | ||
; CHECK-NEXT: Locals: [] | ||
; CHECK-NEXT: Body: 0B | ||
; CHECK-NEXT: - Index: 1 | ||
; CHECK-NEXT: Locals: [] | ||
; CHECK-NEXT: Body: 4180888080000B | ||
; CHECK-NEXT: - Index: 2 | ||
; CHECK-NEXT: Locals: [] | ||
; CHECK-NEXT: Body: 4188888080000B | ||
; CHECK-NEXT: - Index: 3 | ||
; CHECK-NEXT: Locals: [] | ||
; CHECK-NEXT: Body: 0B | ||
; CHECK-NEXT: - Type: DATA | ||
; CHECK-NEXT: Segments: | ||
; CHECK-NEXT: - SectionOffset: 7 | ||
; CHECK-NEXT: InitFlags: 0 | ||
; CHECK-NEXT: Offset: | ||
; CHECK-NEXT: Opcode: I32_CONST | ||
; CHECK-NEXT: Value: 1024 | ||
; CHECK-NEXT: Content: '0300000004000000' | ||
; CHECK-NEXT: - Type: CUSTOM | ||
; CHECK-NEXT: Name: name | ||
; CHECK-NEXT: FunctionNames: | ||
; CHECK-NEXT: - Index: 0 | ||
; CHECK-NEXT: Name: __wasm_call_ctors | ||
; CHECK-NEXT: - Index: 1 | ||
; CHECK-NEXT: Name: get_start | ||
; CHECK-NEXT: - Index: 2 | ||
; CHECK-NEXT: Name: get_end | ||
; CHECK-NEXT: - Index: 3 | ||
; CHECK-NEXT: Name: _start |
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