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llvm-project/lld/test/wasm/data-segments.ll
Sam Clegg 6c84dd7b1c
[lld][WebAssembly] Default to --stack-first (#166998) 
The really painful part of this PR was updating all the test files. I
had some help from Gemini GLI there
which did a pretty good job (got maybe 80% of the updates done).

Fixes: #151015
2025-11-08 00:27:06 +00:00

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; RUN: llc --mtriple=wasm32-unknown-unknown -filetype=obj %s -o %t.atomics.o -mattr=+atomics,-bulk-memory
; RUN: llc --mtriple=wasm32-unknown-unknown -filetype=obj %s -o %t.bulk-mem.o -mattr=+bulk-memory
; RUN: llc --mtriple=wasm64-unknown-unknown -filetype=obj %s -o %t.bulk-mem64.o -mattr=+bulk-memory
; RUN: llc --mtriple=wasm32-unknown-unknown -filetype=obj %s -o %t.atomics.bulk-mem.o -mattr=+atomics,+bulk-memory
; RUN: llc --mtriple=wasm64-unknown-unknown -filetype=obj %s -o %t.atomics.bulk-mem64.o -mattr=+atomics,+bulk-memory
; RUN: llc --mtriple=wasm32-unknown-unknown -filetype=obj %s -o %t.atomics.bulk-mem.pic.o -relocation-model=pic -mattr=+atomics,+bulk-memory,+mutable-globals
; RUN: llc --mtriple=wasm64-unknown-unknown -filetype=obj %s -o %t.atomics.bulk-mem.pic-mem64.o -relocation-model=pic -mattr=+atomics,+bulk-memory,+mutable-globals
;; atomics, shared memory => error
; 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
;; bulk memory, unshared memory => active segments
; RUN: wasm-ld -no-gc-sections --no-entry %t.bulk-mem.o -o %t.bulk-mem.wasm
; RUN: obj2yaml %t.bulk-mem.wasm | FileCheck %s --check-prefixes ACTIVE,ACTIVE32
;; bulk memory, unshared memory, wasm64 => active segments
; RUN: wasm-ld -mwasm64 -no-gc-sections --no-entry %t.bulk-mem64.o -o %t.bulk-mem64.wasm
; RUN: obj2yaml %t.bulk-mem64.wasm | FileCheck %s --check-prefixes ACTIVE,ACTIVE64
;; In -pie mode segments are combined into one active segment.
; RUN: wasm-ld --experimental-pic --import-memory -pie -no-gc-sections --no-entry %t.atomics.bulk-mem.pic.o -o %t.pic.wasm
; RUN: obj2yaml %t.pic.wasm | FileCheck %s --check-prefixes ACTIVE-PIC
; RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_init_memory --no-show-raw-insn --no-leading-addr %t.pic.wasm | FileCheck %s --check-prefixes PIC-NON-SHARED-DIS
;; atomics, bulk memory, shared memory => passive segments
; RUN: wasm-ld -no-gc-sections --no-entry --shared-memory --max-memory=131072 %t.atomics.bulk-mem.o -o %t.atomics.bulk-mem.wasm
; RUN: obj2yaml %t.atomics.bulk-mem.wasm | FileCheck %s --check-prefix PASSIVE
; RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_init_memory --no-show-raw-insn --no-leading-addr %t.atomics.bulk-mem.wasm | FileCheck %s --check-prefixes DIS,NOPIC-DIS -DPTR=i32
;; atomics, bulk memory, shared memory, wasm64 => passive segments
; RUN: wasm-ld -mwasm64 -no-gc-sections --no-entry --shared-memory --max-memory=131072 %t.atomics.bulk-mem64.o -o %t.atomics.bulk-mem64.wasm
; RUN: obj2yaml %t.atomics.bulk-mem64.wasm | FileCheck %s --check-prefix PASSIVE
; RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_init_memory --no-show-raw-insn --no-leading-addr %t.atomics.bulk-mem64.wasm | FileCheck %s --check-prefixes DIS,NOPIC-DIS -DPTR=i64
;; Also test in combination with PIC/pie
; RUN: wasm-ld --experimental-pic -pie -no-gc-sections --no-entry --shared-memory --max-memory=131072 %t.atomics.bulk-mem.pic.o -o %t.shared.pic.wasm
; RUN: obj2yaml %t.shared.pic.wasm | FileCheck %s --check-prefixes PASSIVE-PIC,PASSIVE32-PIC
; RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_init_memory --no-show-raw-insn --no-leading-addr %t.shared.pic.wasm | FileCheck %s --check-prefixes DIS,PIC-DIS -DPTR=i32
;; Also test in combination with PIC/pie + wasm64
; RUN: wasm-ld -mwasm64 --experimental-pic -pie -no-gc-sections --no-entry --shared-memory --max-memory=131072 %t.atomics.bulk-mem.pic-mem64.o -o %t.pic-mem64.wasm
; RUN: obj2yaml %t.pic-mem64.wasm | FileCheck %s --check-prefixes PASSIVE-PIC,PASSIVE64-PIC
; RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_init_memory --no-show-raw-insn --no-leading-addr %t.pic-mem64.wasm | FileCheck %s --check-prefixes DIS,PIC-DIS -DPTR=i64
@a = hidden global [6 x i8] c"hello\00", align 1
@b = hidden global [8 x i8] c"goodbye\00", align 1
@c = hidden global [10000 x i8] zeroinitializer, align 1
@d = hidden global i32 42, align 4
@e = private constant [9 x i8] c"constant\00", align 1
@f = private constant i8 43, align 4
@g = thread_local global i32 99, align 4
; ERROR: 'bulk-memory' feature must be used in order to use shared memory
; ACTIVE-LABEL: - Type: CODE
; ACTIVE-NEXT: Functions:
; ACTIVE-NEXT: - Index: 0
; ACTIVE-NEXT: Locals: []
; ACTIVE-NEXT: Body: 0B
; ACTIVE-NEXT: - Type: DATA
; ACTIVE-NEXT: Segments:
; ACTIVE-NEXT: - SectionOffset: 8
; ACTIVE-NEXT: InitFlags: 0
; ACTIVE-NEXT: Offset:
; ACTIVE32-NEXT: Opcode: I32_CONST
; ACTIVE64-NEXT: Opcode: I64_CONST
; ACTIVE-NEXT: Value: 65536
; ACTIVE-NEXT: Content: 636F6E7374616E74000000002B
; ACTIVE-NEXT: - SectionOffset: 28
; ACTIVE-NEXT: InitFlags: 0
; ACTIVE-NEXT: Offset:
; ACTIVE32-NEXT: Opcode: I32_CONST
; ACTIVE64-NEXT: Opcode: I64_CONST
; ACTIVE-NEXT: Value: 65552
; ACTIVE-NEXT: Content: 68656C6C6F00676F6F646279650000002A00000063000000
; ACTIVE-NEXT: - Type: CUSTOM
; ACTIVE-NEXT: Name: name
; ACTIVE-NEXT: FunctionNames:
; ACTIVE-NEXT: - Index: 0
; ACTIVE-NEXT: Name: __wasm_call_ctors
;; In ACTIVE-PIC mode the memory is imported which means all data segments
;; (except BSS) are combined in the single one.
;; BSS is not included here, and instead initialized using `memory.init` in
;; `__wasm_init_memory`
; ACTIVE-PIC: - Type: DATA
; ACTIVE-PIC-NEXT: Segments:
; ACTIVE-PIC-NEXT: - SectionOffset: 6
; ACTIVE-PIC-NEXT: InitFlags: 0
; ACTIVE-PIC-NEXT: Offset:
; ACTIVE-PIC-NEXT: Opcode: GLOBAL_GET
; ACTIVE-PIC-NEXT: Index: 1
; ACTIVE-PIC-NEXT: Content: 63000000636F6E7374616E74000000002B00000068656C6C6F00676F6F646279650000002A000000
; PASSIVE-LABEL: - Type: START
; PASSIVE-NEXT: StartFunction: 2
; PASSIVE-LABEL: - Type: DATACOUNT
; PASSIVE-NEXT: Count: 3
; PASSIVE-LABEL: - Type: CODE
; PASSIVE-NEXT: Functions:
; PASSIVE-NEXT: - Index: 0
; PASSIVE-NEXT: Locals: []
; PASSIVE-NEXT: Body: 0B
; PASSIVE-NEXT: - Index: 1
; PASSIVE-NEXT: Locals: []
; PASSIVE-NEXT: Body: {{.*}}
; PASSIVE-NEXT: - Index: 2
; PASSIVE-NEXT: Locals: []
; PASSIVE-NEXT: Body: {{.*}}
; PASSIVE-NEXT: - Type: DATA
; PASSIVE-NEXT: Segments:
; PASSIVE-NEXT: - SectionOffset: 3
; PASSIVE-NEXT: InitFlags: 1
; PASSIVE-NEXT: Content: '63000000'
; PASSIVE-NEXT: - SectionOffset: 9
; PASSIVE-NEXT: InitFlags: 1
; PASSIVE-NEXT: Content: 636F6E7374616E74000000002B
; PASSIVE-NEXT: - SectionOffset: 24
; PASSIVE-NEXT: InitFlags: 1
; PASSIVE-NEXT: Content: 68656C6C6F00676F6F646279650000002A000000
; PASSIVE-NEXT: - Type: CUSTOM
; PASSIVE-NEXT: Name: name
; PASSIVE-NEXT: FunctionNames:
; PASSIVE-NEXT: - Index: 0
; PASSIVE-NEXT: Name: __wasm_call_ctors
; PASSIVE-NEXT: - Index: 1
; PASSIVE-NEXT: Name: __wasm_init_tls
; PASSIVE-NEXT: - Index: 2
; PASSIVE-NEXT: Name: __wasm_init_memory
; PASSIVE-PIC: - Type: START
; PASSIVE-PIC-NEXT: StartFunction: 2
; PASSIVE-PIC-NEXT: - Type: DATACOUNT
; PASSIVE-PIC-NEXT: Count: 3
; PASSIVE-PIC-NEXT: - Type: CODE
; PASSIVE-PIC-NEXT: Functions:
; PASSIVE-PIC-NEXT: - Index: 0
; PASSIVE-PIC-NEXT: Locals: []
; PASSIVE-PIC-NEXT: Body: 0B
; PASSIVE-PIC-NEXT: - Index: 1
; PASSIVE-PIC-NEXT: Locals: []
; PASSIVE-PIC-NEXT: Body: {{.*}}
; PASSIVE-PIC-NEXT: - Index: 2
; PASSIVE-PIC-NEXT: Locals:
; PASSIVE32-PIC-NEXT: - Type: I32
; PASSIVE64-PIC-NEXT: - Type: I64
; PASSIVE-PIC-NEXT: Count: 2
; PASSIVE-PIC-NEXT: Body: {{.*}}
; PASSIVE-PIC-NEXT: - Type: DATA
; PASSIVE-PIC-NEXT: Segments:
; PASSIVE-PIC-NEXT: - SectionOffset: 3
; PASSIVE-PIC-NEXT: InitFlags: 1
; PASSIVE-PIC-NEXT: Content: '63000000'
; PASSIVE-PIC-NEXT: - SectionOffset: 9
; PASSIVE-PIC-NEXT: InitFlags: 1
; PASSIVE-PIC-NEXT: Content: 636F6E7374616E74000000002B
; PASSIVE-PIC-NEXT: - SectionOffset: 24
; PASSIVE-PIC-NEXT: InitFlags: 1
; PASSIVE-PIC-NEXT: Content: 68656C6C6F00676F6F646279650000002A000000
; PASSIVE-PIC-NEXT: - Type: CUSTOM
; PASSIVE-PIC-NEXT: Name: name
; PASSIVE-PIC-NEXT: FunctionNames:
; PASSIVE-PIC-NEXT: - Index: 0
; PASSIVE-PIC-NEXT: Name: __wasm_call_ctors
; PASSIVE-PIC-NEXT: - Index: 1
; PASSIVE-PIC-NEXT: Name: __wasm_init_tls
; PASSIVE-PIC-NEXT: - Index: 2
; PASSIVE-PIC-NEXT: Name: __wasm_init_memory
;; For the non-shared PIC case the __wasm_init_memory only deals with BSS since
;; all other segments are active
; PIC-NON-SHARED-DIS: <__wasm_init_memory>:
; PIC-NON-SHARED-DIS-EMPTY:
; PIC-NON-SHARED-DIS-NEXT: i32.const 40
; PIC-NON-SHARED-DIS-NEXT: global.get 1
; PIC-NON-SHARED-DIS-NEXT: i32.add
; PIC-NON-SHARED-DIS-NEXT: i32.const 0
; PIC-NON-SHARED-DIS-NEXT: i32.const 10000
; PIC-NON-SHARED-DIS-NEXT: memory.fill 0
; PIC-NON-SHARED-DIS-NEXT: end
;; no data relocations.
; DIS-LABEL: <__wasm_call_ctors>:
; DIS-EMPTY:
; DIS-NEXT: end
; PIC-DIS-EMPTY:
; DIS-LABEL: <__wasm_init_memory>:
; PIC-DIS: .local [[PTR]]
; PIC-DIS-NEXT: global.get 1
; PIC-DIS-NEXT: [[PTR]].const 10040
; PIC-DIS-NEXT: [[PTR]].add
; PIC-DIS-NEXT: local.set 0
; DIS: block
; DIS-NEXT: block
; DIS-NEXT: block
; NOPIC-DIS-NEXT: [[PTR]].const 75576
; PIC-DIS-NEXT: local.get 0
; DIS-NEXT: i32.const 0
; DIS-NEXT: i32.const 1
; DIS-NEXT: i32.atomic.rmw.cmpxchg 0
; DIS-NEXT: br_table {0, 1, 2} # 1: down to label1
; DIS-NEXT: # 2: down to label0
; DIS-NEXT: end
; NOPIC-DIS-NEXT: [[PTR]].const 65536
; NOPIC-DIS-NEXT: [[PTR]].const 65536
; NOPIC-DIS-NEXT: global.set 1
; PIC-DIS-NEXT: [[PTR]].const 0
; PIC-DIS-NEXT: global.get 1
; PIC-DIS-NEXT: [[PTR]].add
; PIC-DIS-NEXT: local.tee 1
; PIC-DIS-NEXT: global.set {{\d*}}
; PIC-DIS-NEXT: local.get 1
; DIS-NEXT: i32.const 0
; DIS-NEXT: i32.const 4
; DIS-NEXT: memory.init 0, 0
; NOPIC-DIS-NEXT: [[PTR]].const 65540
; PIC-DIS-NEXT: [[PTR]].const 4
; PIC-DIS-NEXT: global.get 1
; PIC-DIS-NEXT: [[PTR]].add
; DIS-NEXT: i32.const 0
; DIS-NEXT: i32.const 13
; DIS-NEXT: memory.init 1, 0
; NOPIC-DIS-NEXT: [[PTR]].const 65556
; PIC-DIS-NEXT: [[PTR]].const 20
; PIC-DIS-NEXT: global.get 1
; PIC-DIS-NEXT: [[PTR]].add
; DIS-NEXT: i32.const 0
; DIS-NEXT: i32.const 20
; DIS-NEXT: memory.init 2, 0
; NOPIC-DIS-NEXT: [[PTR]].const 65576
; PIC-DIS-NEXT: [[PTR]].const 40
; PIC-DIS-NEXT: global.get 1
; PIC-DIS-NEXT: [[PTR]].add
; DIS-NEXT: i32.const 0
; DIS-NEXT: [[PTR]].const 10000
; DIS-NEXT: memory.fill 0
; NOPIC-DIS-NEXT: [[PTR]].const 75576
; PIC-DIS-NEXT: local.get 0
; DIS-NEXT: i32.const 2
; DIS-NEXT: i32.atomic.store 0
; NOPIC-DIS-NEXT: [[PTR]].const 75576
; PIC-DIS-NEXT: local.get 0
; DIS-NEXT: i32.const -1
; DIS-NEXT: memory.atomic.notify 0
; DIS-NEXT: drop
; DIS-NEXT: br 1 # 1: down to label1
; DIS-NEXT: end
; NOPIC-DIS-NEXT: [[PTR]].const 75576
; PIC-DIS-NEXT: local.get 0
; DIS-NEXT: i32.const 1
; DIS-NEXT: i64.const -1
; DIS-NEXT: memory.atomic.wait32 0
; DIS-NEXT: drop
; DIS-NEXT: end
; DIS-NEXT: data.drop 1
; DIS-NEXT: data.drop 2
; DIS-NEXT: end
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