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llvm-mirror/test/MC/WebAssembly/external-func-address.ll
Andy Wingo 8edc77a020 [MC][WebAssembly] Only emit indirect function table import if needed
The indirect function table, synthesized by the linker, is needed if and
only if there are TABLE_INDEX relocs.

Differential Revision: https://reviews.llvm.org/D91637
2020-11-25 08:38:43 -08:00

67 lines
2.3 KiB
LLVM

; RUN: llc -filetype=obj %s -o - | obj2yaml | FileCheck %s
target triple = "wasm32-unknown-unknown"
; Verify that addresses of external functions generate correctly typed
; imports and relocations of type R_TABLE_INDEX_I32.
declare void @f0(i32) #0
@ptr_to_f0 = hidden global void (i32)* @f0, align 4
attributes #0 = { "wasm-import-module"="somewhere" "wasm-import-name"="something" }
declare void @f1(i32) #1
@ptr_to_f1 = hidden global void (i32)* @f1, align 4
; Check that varargs functions have correctly typed imports
declare i32 @varargs(i32, i32, ...)
define void @call(i32) {
%a = call i32 (i32, i32, ...) @varargs(i32 0, i32 0)
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: - I32
; CHECK-NEXT: - I32
; CHECK-NEXT: - I32
; CHECK-NEXT: ReturnTypes:
; CHECK-NEXT: - I32
; CHECK: - Type: IMPORT
; CHECK-NEXT: Imports:
; CHECK: - Module: env
; CHECK-NEXT: Field: __linear_memory
; CHECK: - Module: env
; CHECK-NEXT: Field: varargs
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: SigIndex: 1
; CHECK: - Module: somewhere
; CHECK-NEXT: Field: something
; CHECK: - Module: env
; CHECK-NEXT: Field: f1
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: SigIndex: 0
; CHECK: - Module: env
; CHECK-NEXT: Field: __indirect_function_table
; CHECK: - Type: ELEM
; CHECK-NEXT: Segments:
; CHECK-NEXT: - Offset:
; CHECK-NEXT: Opcode: I32_CONST
; CHECK-NEXT: Value: 1
; CHECK-NEXT: Functions: [ 1, 2 ]
; CHECK: - Type: DATA{{$}}
; CHECK-NEXT: Relocations:
; CHECK-NEXT: - Type: R_WASM_TABLE_INDEX_I32
; CHECK-NEXT: Index: 3
; CHECK-NEXT: Offset: 0x6