call-indirect.ll
5.77 KB
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; RUN: llc -filetype=obj %s -o %t.o
; RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/call-indirect.s -o %t2.o
; RUN: wasm-ld --export-dynamic -o %t.wasm %t2.o %t.o
; RUN: obj2yaml %t.wasm | FileCheck %s
; bitcode generated from the following C code:
; int foo(void) { return 1; }
; int (*indirect_func)(void) = &foo;
; void _start(void) { indirect_func(); }
target triple = "wasm32-unknown-unknown"
@indirect_func = local_unnamed_addr global i32 ()* @foo, align 4
; Function Attrs: norecurse nounwind readnone
define i32 @foo() #0 {
entry:
ret i32 2
}
; Function Attrs: nounwind
define void @_start() local_unnamed_addr #1 {
entry:
%0 = load i32 ()*, i32 ()** @indirect_func, align 4
%call = call i32 %0() #2
ret void
}
; Indirect function call where no function actually has this type.
; Ensures that the type entry is still created in this case.
define void @call_ptr(i64 (i64)* %arg) {
%1 = call i64 %arg(i64 1)
ret void
}
; CHECK: !WASM
; CHECK-NEXT: FileHeader:
; CHECK-NEXT: Version: 0x00000001
; CHECK-NEXT: Sections:
; CHECK-NEXT: - Type: TYPE
; CHECK-NEXT: Signatures:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: ReturnTypes:
; CHECK-NEXT: - I64
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: ReturnTypes:
; CHECK-NEXT: - I32
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: - I64
; CHECK-NEXT: ReturnTypes:
; CHECK-NEXT: - I64
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: ReturnTypes: []
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: ParamTypes:
; CHECK-NEXT: - I32
; CHECK-NEXT: ReturnTypes: []
; CHECK-NEXT: - Type: FUNCTION
; CHECK-NEXT: FunctionTypes: [ 0, 3, 1, 3, 4 ]
; CHECK-NEXT: - Type: TABLE
; CHECK-NEXT: Tables:
; CHECK-NEXT: - ElemType: FUNCREF
; CHECK-NEXT: Limits:
; CHECK-NEXT: Flags: [ HAS_MAX ]
; CHECK-NEXT: Initial: 0x00000003
; CHECK-NEXT: Maximum: 0x00000003
; CHECK-NEXT: - Type: MEMORY
; CHECK-NEXT: Memories:
; CHECK-NEXT: - Initial: 0x00000002
; CHECK-NEXT: - Type: GLOBAL
; CHECK-NEXT: Globals:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: Type: I32
; CHECK-NEXT: Mutable: true
; CHECK-NEXT: InitExpr:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 66576
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: Type: I32
; CHECK-NEXT: Mutable: false
; CHECK-NEXT: InitExpr:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 1032
; CHECK-NEXT: - Type: EXPORT
; CHECK-NEXT: Exports:
; CHECK-NEXT: - Name: memory
; CHECK-NEXT: Kind: MEMORY
; CHECK-NEXT: Index: 0
; CHECK-NEXT: - Name: bar
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 0
; CHECK-NEXT: - Name: call_bar_indirect
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 1
; CHECK-NEXT: - Name: foo
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 2
; CHECK-NEXT: - Name: _start
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 3
; CHECK-NEXT: - Name: indirect_func
; CHECK-NEXT: Kind: GLOBAL
; CHECK-NEXT: Index: 1
; CHECK-NEXT: - Name: call_ptr
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 4
; CHECK-NEXT: - Type: ELEM
; CHECK-NEXT: Segments:
; CHECK-NEXT: - Offset:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 1
; CHECK-NEXT: Functions: [ 0, 2 ]
; CHECK-NEXT: - Type: CODE
; CHECK-NEXT: Functions:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 42010B
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 28028088808000118080808000001A28028488808000118180808000001A0B
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 41020B
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 410028028888808000118180808000001A0B
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: Locals:
; CHECK-NEXT: Body: 42012000118280808000001A0B
; 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: '010000000200000002000000'
; CHECK-NEXT: - Type: CUSTOM
; CHECK-NEXT: Name: name
; CHECK-NEXT: FunctionNames:
; CHECK-NEXT: - Index: 0
; CHECK-NEXT: Name: bar
; CHECK-NEXT: - Index: 1
; CHECK-NEXT: Name: call_bar_indirect
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: Name: foo
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Name: _start
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: Name: call_ptr
; CHECK-NEXT: ...