21143b93a6
Summary: This was always the intended behavior, but had not been implemented. This ordering is important for Emscripten when generating .mem files while compiling to JS, since only zeros at the end of initialized memory can be dropped. Fixes https://github.com/emscripten-core/emscripten/issues/8999 Reviewers: sbc100 Subscribers: dschuff, jgravelle-google, aheejin, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D67736 llvm-svn: 372284
94 lines
4.2 KiB
LLVM
94 lines
4.2 KiB
LLVM
; RUN: llc -filetype=obj %s -o %t.atomics.o -mattr=+atomics
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; RUN: llc -filetype=obj %s -o %t.bulk-mem.o -mattr=+bulk-memory
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; RUN: llc -filetype=obj %s -o %t.atomics.bulk-mem.o -mattr=+atomics,+bulk-memory
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; atomics, shared memory => error
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; RUN: not wasm-ld -no-gc-sections --no-entry --shared-memory --max-memory=131072 %t.atomics.o -o %t.atomics.wasm 2>&1 | FileCheck %s --check-prefix ERROR
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; bulk memory, unshared memory => active segments
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; RUN: wasm-ld -no-gc-sections --no-entry %t.bulk-mem.o -o %t.bulk-mem.wasm
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; RUN: obj2yaml %t.bulk-mem.wasm | FileCheck %s --check-prefix ACTIVE
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; atomics, bulk memory, shared memory => passive segments
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; RUN: wasm-ld -no-gc-sections --no-entry --shared-memory --max-memory=131072 %t.atomics.bulk-mem.o -o %t.atomics.bulk-mem.wasm
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; RUN: obj2yaml %t.atomics.bulk-mem.wasm | FileCheck %s --check-prefixes PASSIVE
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target triple = "wasm32-unknown-unknown"
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@a = hidden global [6 x i8] c"hello\00", align 1
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@b = hidden global [8 x i8] c"goodbye\00", align 1
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@c = hidden global [10000 x i8] zeroinitializer, align 1
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@d = hidden global i32 42, align 4
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@e = private constant [9 x i8] c"constant\00", align 1
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@f = private constant i8 43, align 4
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; ERROR: 'bulk-memory' feature must be used in order to use shared memory
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; ACTIVE-LABEL: - Type: CODE
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; ACTIVE-NEXT: Functions:
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; ACTIVE-NEXT: - Index: 0
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; ACTIVE-NEXT: Locals: []
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; ACTIVE-NEXT: Body: 0B
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; ACTIVE-NEXT: - Type: DATA
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; ACTIVE-NEXT: Segments:
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; ACTIVE-NEXT: - SectionOffset: 7
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; ACTIVE-NEXT: InitFlags: 0
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; ACTIVE-NEXT: Offset:
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; ACTIVE-NEXT: Opcode: I32_CONST
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; ACTIVE-NEXT: Value: 1024
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; ACTIVE-NEXT: Content: 636F6E7374616E74000000002B
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; ACTIVE-NEXT: - SectionOffset: 26
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; ACTIVE-NEXT: InitFlags: 0
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; ACTIVE-NEXT: Offset:
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; ACTIVE-NEXT: Opcode: I32_CONST
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; ACTIVE-NEXT: Value: 1040
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; ACTIVE-NEXT: Content: 68656C6C6F00676F6F646279650000002A000000
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; ACTIVE-NEXT: - SectionOffset: 53
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; ACTIVE-NEXT: InitFlags: 0
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; ACTIVE-NEXT: Offset:
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; ACTIVE-NEXT: Opcode: I32_CONST
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; ACTIVE-NEXT: Value: 1060
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; ACTIVE-NEXT: Content: '0000000000
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; ACTIVE-SAME: 0000000000'
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; ACTIVE-NEXT: - Type: CUSTOM
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; ACTIVE-NEXT: Name: name
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; ACTIVE-NEXT: FunctionNames:
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; ACTIVE-NEXT: - Index: 0
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; ACTIVE-NEXT: Name: __wasm_call_ctors
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; PASSIVE-LABEL: - Type: START
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; PASSIVE-NEXT: StartFunction: 1
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; PASSIVE-LABEL: - Type: CODE
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; PASSIVE-NEXT: Functions:
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; PASSIVE-NEXT: - Index: 0
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; PASSIVE-NEXT: Locals: []
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; PASSIVE-NEXT: Body: 0B
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; PASSIVE-NEXT: - Index: 1
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; PASSIVE-NEXT: Locals: []
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; PASSIVE-NEXT: Body: 41B4D60041004101FE480200044041B4D6004101427FFE0102001A054180084100410DFC08000041900841004114FC08010041A40841004190CE00FC08020041B4D6004102FE17020041B4D600417FFE0002001A0BFC0900FC0901FC09020B
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; PASSIVE-NEXT: - Index: 2
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; PASSIVE-NEXT: Locals: []
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; PASSIVE-NEXT: Body: 0B
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; PASSIVE-NEXT: - Type: DATA
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; PASSIVE-NEXT: Segments:
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; PASSIVE-NEXT: - SectionOffset: 3
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; PASSIVE-NEXT: InitFlags: 1
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; PASSIVE-NEXT: Content: 636F6E7374616E74000000002B
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; PASSIVE-NEXT: - SectionOffset: 18
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; PASSIVE-NEXT: InitFlags: 1
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; PASSIVE-NEXT: Content: 68656C6C6F00676F6F646279650000002A000000
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; PASSIVE-NEXT: - SectionOffset: 41
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; PASSIVE-NEXT: InitFlags: 1
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; PASSIVE-NEXT: Content: '0000000000
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; PASSIVE-SAME: 0000000000'
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; PASSIVE-NEXT: - Type: CUSTOM
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; PASSIVE-NEXT: Name: name
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; PASSIVE-NEXT: FunctionNames:
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; PASSIVE-NEXT: - Index: 0
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; PASSIVE-NEXT: Name: __wasm_call_ctors
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; PASSIVE-NEXT: - Index: 1
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; PASSIVE-NEXT: Name: __wasm_init_memory
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; PASSIVE-NEXT: - Index: 2
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; PASSIVE-NEXT: Name: __wasm_init_tls
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