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llvm-project/lld/test/wasm/relocatable.ll
Andy Wingo 9ac5620cb8 [WebAssembly] Rename WasmLimits::Initial to ::Minimum. NFC. 
This patch renames the "Initial" member of WasmLimits to the name used
in the spec, "Minimum".

In the core WebAssembly specification, the Limits data type has one
required "min" member and one optional "max" member, indicating the
minimum required size of the corresponding table or memory, and the
maximum size, if any.

Although the WebAssembly spec does instantiate locally-defined tables
and memories with the initial size being equal to the minimum size, it
can't impose such a requirement for imports.  It doesn't make sense to
require an initial size for a memory import, for example.  The compiler
can only sensibly express the minimum and maximum sizes.

See
https://github.com/WebAssembly/js-types/blob/master/proposals/js-types/Overview.md#naming-of-size-limits
for a related discussion that agrees that the right name of "initial" is
"minimum" when querying the type of a table or memory from JavaScript.
(Of course it still makes sense for JS to speak in terms of an initial
size when it explicitly instantiates memories and tables.)

Differential Revision: https://reviews.llvm.org/D99186
2021-03-24 09:10:11 +01:00

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; RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/hello.s -o %t.hello.o
; RUN: llc -filetype=obj %s -o %t.o
; RUN: wasm-ld -r -o %t2.o %t.hello.o %t.o
; RUN: obj2yaml %t2.o | FileCheck %s
; Verify the resulting object can be used as linker input
; RUN: wasm-ld --allow-undefined -o %t.wasm %t2.o --export-table
target triple = "wasm32-unknown-unknown"
; Function Attrs: nounwind
define hidden i32 @my_func() local_unnamed_addr {
entry:
%call = tail call i32 @foo_import()
%call2 = tail call i32 @bar_import()
ret i32 1
}
declare i32 @foo_import() local_unnamed_addr
declare extern_weak i32 @bar_import() local_unnamed_addr
@data_import = external global i64
@func_addr1 = hidden global i32()* @my_func, align 4
@func_addr2 = hidden global i32()* @foo_import, align 4
@func_addr3 = hidden global i32()* @bar_import, align 4
@data_addr1 = hidden global i64* @data_import, align 8
$func_comdat = comdat any
@data_comdat = weak_odr constant [3 x i8] c"abc", comdat($func_comdat)
define linkonce_odr i32 @func_comdat() comdat {
entry:
ret i32 ptrtoint ([3 x i8]* @data_comdat to i32)
}
; Test that __attribute__(used) (i.e NO_STRIP) is preserved in the relocated symbol table
@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 ()* @my_func to i8*)], section "llvm.metadata"
define void @_start() {
ret void
}
; CHECK: --- !WASM
; CHECK-NEXT: FileHeader:
; CHECK-NEXT: Version: 0x1
; CHECK-NEXT: Sections:
; CHECK-NEXT: - Type: TYPE
; CHECK-NEXT: Signatures:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: - I32
; CHECK-NEXT: ReturnTypes: []
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: ReturnTypes:
; CHECK-NEXT: - I32
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: ReturnTypes: []
; CHECK-NEXT: - Type: IMPORT
; CHECK-NEXT: Imports:
; CHECK-NEXT: - Module: env
; CHECK-NEXT: Field: __indirect_function_table
; CHECK-NEXT: Kind: TABLE
; CHECK-NEXT: Table:
; CHECK-NEXT: Index: 0
; CHECK-NEXT: ElemType: FUNCREF
; CHECK-NEXT: Limits:
; CHECK-NEXT: Minimum: 0x4
; CHECK-NEXT: - Module: env
; CHECK-NEXT: Field: puts
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: SigIndex: 0
; CHECK-NEXT: - Module: env
; CHECK-NEXT: Field: foo_import
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: SigIndex: 1
; CHECK-NEXT: - Module: env
; CHECK-NEXT: Field: bar_import
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: SigIndex: 1
; CHECK-NEXT: - Type: FUNCTION
; CHECK-NEXT: FunctionTypes: [ 2, 1, 1, 2 ]
; CHECK-NEXT: - Type: MEMORY
; CHECK-NEXT: Memories:
; CHECK-NEXT: - Minimum: 0x1
; CHECK-NEXT: - Type: ELEM
; CHECK-NEXT: Segments:
; CHECK-NEXT: - Offset:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 1
; CHECK-NEXT: Functions: [ 4, 1, 2 ]
; SHARED-NEXT: - Type: DATACOUNT
; SHARED-NEXT: Count: 6
; CHECK-NEXT: - Type: CODE
; CHECK-NEXT: Relocations:
; CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_SLEB
; CHECK-NEXT: Index: 1
; CHECK-NEXT: Offset: 0x4
; CHECK-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; CHECK-NEXT: Index: 2
; CHECK-NEXT: Offset: 0xA
; CHECK-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; CHECK-NEXT: Index: 4
; CHECK-NEXT: Offset: 0x13
; CHECK-NEXT: - Type: R_WASM_FUNCTION_INDEX_LEB
; CHECK-NEXT: Index: 5
; CHECK-NEXT: Offset: 0x1A
; CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_SLEB
; CHECK-NEXT: Index: 7
; CHECK-NEXT: Offset: 0x26
; CHECK-NEXT: Functions:
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 4180808080001080808080000B
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 1081808080001A1082808080001A41010B
; CHECK-NEXT: - Index: 5
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 4187808080000B
; NORMAL-NEXT: - Type: DATA
; NORMAL-NEXT: Relocations:
; NORMAL-NEXT: - Type: R_WASM_TABLE_INDEX_I32
; NORMAL-NEXT: Index: 3
; NORMAL-NEXT: Offset: 0x1A
; NORMAL-NEXT: - Type: R_WASM_TABLE_INDEX_I32
; NORMAL-NEXT: Index: 4
; NORMAL-NEXT: Offset: 0x23
; NORMAL-NEXT: - Type: R_WASM_TABLE_INDEX_I32
; NORMAL-NEXT: Index: 5
; NORMAL-NEXT: Offset: 0x2C
; NORMAL-NEXT: - Type: R_WASM_MEMORY_ADDR_I32
; NORMAL-NEXT: Index: 12
; NORMAL-NEXT: Offset: 0x35
; NORMAL-NEXT: Segments:
; NORMAL-NEXT: - SectionOffset: 6
; NORMAL-NEXT: InitFlags: 0
; NORMAL-NEXT: Offset:
; NORMAL-NEXT: Opcode: I32_CONST
; NORMAL-NEXT: Value: 0
; NORMAL-NEXT: Content: 68656C6C6F0A00
; NORMAL-NEXT: - SectionOffset: 18
; NORMAL-NEXT: InitFlags: 0
; NORMAL-NEXT: Offset:
; NORMAL-NEXT: Opcode: I32_CONST
; NORMAL-NEXT: Value: 7
; NORMAL-NEXT: Content: '616263'
; NORMAL-NEXT: - SectionOffset: 26
; NORMAL-NEXT: InitFlags: 0
; NORMAL-NEXT: Offset:
; NORMAL-NEXT: Opcode: I32_CONST
; NORMAL-NEXT: Value: 12
; NORMAL-NEXT: Content: '01000000'
; NORMAL-NEXT: - SectionOffset: 35
; NORMAL-NEXT: InitFlags: 0
; NORMAL-NEXT: Offset:
; NORMAL-NEXT: Opcode: I32_CONST
; NORMAL-NEXT: Value: 16
; NORMAL-NEXT: Content: '02000000'
; NORMAL-NEXT: - SectionOffset: 44
; NORMAL-NEXT: InitFlags: 0
; NORMAL-NEXT: Offset:
; NORMAL-NEXT: Opcode: I32_CONST
; NORMAL-NEXT: Value: 20
; NORMAL-NEXT: Content: '03000000'
; NORMAL-NEXT: - SectionOffset: 53
; NORMAL-NEXT: InitFlags: 0
; NORMAL-NEXT: Offset:
; NORMAL-NEXT: Opcode: I32_CONST
; NORMAL-NEXT: Value: 24
; NORMAL-NEXT: Content: '00000000'
; NORMAL-NEXT: - Type: CUSTOM
; NORMAL-NEXT: Name: linking
; NORMAL-NEXT: Version: 2
; NORMAL-NEXT: SymbolTable:
; NORMAL-NEXT: - Index: 0
; NORMAL-NEXT: Kind: FUNCTION
; NORMAL-NEXT: Name: hello
; NORMAL-NEXT: Flags: [ VISIBILITY_HIDDEN ]
; NORMAL-NEXT: Function: 3
; NORMAL-NEXT: - Index: 1
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: hello_str
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: Segment: 0
; NORMAL-NEXT: Size: 7
; NORMAL-NEXT: - Index: 2
; NORMAL-NEXT: Kind: FUNCTION
; NORMAL-NEXT: Name: puts
; NORMAL-NEXT: Flags: [ UNDEFINED ]
; NORMAL-NEXT: Function: 0
; NORMAL-NEXT: - Index: 3
; NORMAL-NEXT: Kind: FUNCTION
; NORMAL-NEXT: Name: my_func
; NORMAL-NEXT: Flags: [ VISIBILITY_HIDDEN, NO_STRIP ]
; NORMAL-NEXT: Function: 4
; NORMAL-NEXT: - Index: 4
; NORMAL-NEXT: Kind: FUNCTION
; NORMAL-NEXT: Name: foo_import
; NORMAL-NEXT: Flags: [ UNDEFINED ]
; NORMAL-NEXT: Function: 1
; NORMAL-NEXT: - Index: 5
; NORMAL-NEXT: Kind: FUNCTION
; NORMAL-NEXT: Name: bar_import
; NORMAL-NEXT: Flags: [ BINDING_WEAK, UNDEFINED ]
; NORMAL-NEXT: Function: 2
; NORMAL-NEXT: - Index: 6
; NORMAL-NEXT: Kind: FUNCTION
; NORMAL-NEXT: Name: func_comdat
; NORMAL-NEXT: Flags: [ BINDING_WEAK ]
; NORMAL-NEXT: Function: 5
; NORMAL-NEXT: - Index: 7
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: data_comdat
; NORMAL-NEXT: Flags: [ BINDING_WEAK ]
; NORMAL-NEXT: Segment: 1
; NORMAL-NEXT: Size: 3
; NORMAL-NEXT: - Index: 8
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: func_addr1
; NORMAL-NEXT: Flags: [ VISIBILITY_HIDDEN ]
; NORMAL-NEXT: Segment: 2
; NORMAL-NEXT: Size: 4
; NORMAL-NEXT: - Index: 9
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: func_addr2
; NORMAL-NEXT: Flags: [ VISIBILITY_HIDDEN ]
; NORMAL-NEXT: Segment: 3
; NORMAL-NEXT: Size: 4
; NORMAL-NEXT: - Index: 10
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: func_addr3
; NORMAL-NEXT: Flags: [ VISIBILITY_HIDDEN ]
; NORMAL-NEXT: Segment: 4
; NORMAL-NEXT: Size: 4
; NORMAL-NEXT: - Index: 11
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: data_addr1
; NORMAL-NEXT: Flags: [ VISIBILITY_HIDDEN ]
; NORMAL-NEXT: Segment: 5
; NORMAL-NEXT: Size: 4
; NORMAL-NEXT: - Index: 12
; NORMAL-NEXT: Kind: DATA
; NORMAL-NEXT: Name: data_import
; NORMAL-NEXT: Flags: [ UNDEFINED ]
; NORMAL-NEXT: SegmentInfo:
; NORMAL-NEXT: - Index: 0
; NORMAL-NEXT: Name: .rodata.hello_str
; NORMAL-NEXT: Alignment: 0
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: - Index: 1
; NORMAL-NEXT: Name: .rodata.data_comdat
; NORMAL-NEXT: Alignment: 0
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: - Index: 2
; NORMAL-NEXT: Name: .data.func_addr1
; NORMAL-NEXT: Alignment: 2
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: - Index: 3
; NORMAL-NEXT: Name: .data.func_addr2
; NORMAL-NEXT: Alignment: 2
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: - Index: 4
; NORMAL-NEXT: Name: .data.func_addr3
; NORMAL-NEXT: Alignment: 2
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: - Index: 5
; NORMAL-NEXT: Name: .data.data_addr1
; NORMAL-NEXT: Alignment: 3
; NORMAL-NEXT: Flags: [ ]
; NORMAL-NEXT: Comdats:
; NORMAL-NEXT: - Name: func_comdat
; NORMAL-NEXT: Entries:
; NORMAL-NEXT: - Kind: FUNCTION
; NORMAL-NEXT: Index: 5
; NORMAL-NEXT: - Kind: DATA
; NORMAL-NEXT: Index: 1
; NORMAL-NEXT: - Type: CUSTOM
; NORMAL-NEXT: Name: name
; NORMAL-NEXT: FunctionNames:
; NORMAL-NEXT: - Index: 0
; NORMAL-NEXT: Name: puts
; NORMAL-NEXT: - Index: 1
; NORMAL-NEXT: Name: foo_import
; NORMAL-NEXT: - Index: 2
; NORMAL-NEXT: Name: bar_import
; NORMAL-NEXT: - Index: 3
; NORMAL-NEXT: Name: hello
; NORMAL-NEXT: - Index: 4
; NORMAL-NEXT: Name: my_func
; NORMAL-NEXT: - Index: 5
; NORMAL-NEXT: Name: func_comdat
; NORMAL-NEXT:...
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