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TheRock/compiler/amd-llvm/llvm/test/CodeGen/WebAssembly/function-pointer64.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

64 lines
1.7 KiB
LLVM

; RUN: llc < %s -asm-verbose=false -mattr=-reference-types,-call-indirect-overlong -O2 | FileCheck %s
; RUN: llc < %s -asm-verbose=false -mattr=+reference-types -O2 | FileCheck --check-prefix=REF %s
; RUN: llc < %s -asm-verbose=false -mattr=-reference-types,-call-indirect-overlong -O2 --filetype=obj | obj2yaml | FileCheck --check-prefix=YAML %s
; This tests pointer features that may codegen differently in wasm64.
target triple = "wasm64-unknown-unknown"
define void @bar(i32 %n) {
entry:
ret void
}
define void @foo(ptr %fp) {
entry:
call void %fp(i32 1)
ret void
}
define void @test() {
entry:
call void @foo(ptr @bar)
store ptr @bar, ptr @fptr
ret void
}
@fptr = global ptr @bar
; For simplicity (and compatibility with UB C/C++ code) we keep all types
; of pointers the same size, so function pointers (which are 32-bit indices
; in Wasm) are represented as 64-bit until called.
; CHECK-LABEL: foo:
; CHECK: .functype foo (i64) -> ()
; CHECK-NEXT: i32.const 1
; CHECK-NEXT: local.get 0
; CHECK-NEXT: call_indirect (i32) -> ()
; REF: call_indirect __indirect_function_table, (i32) -> ()
; CHECK: .functype test () -> ()
; CHECK-NEXT: i64.const bar
; CHECK-NEXT: call foo
; Check we're emitting a 64-bit relocs for the call_indirect, the
; `i64.const bar` reference in code, and the global.
; YAML: Memory:
; YAML-NEXT: Flags: [ IS_64 ]
; YAML-NEXT: Minimum: 0x1
; YAML: - Type: CODE
; YAML: - Type: R_WASM_TABLE_INDEX_SLEB64
; YAML-NEXT: Index: 0
; YAML-NEXT: Offset: 0x15
; YAML: - Type: R_WASM_TABLE_INDEX_SLEB64
; YAML-NEXT: Index: 0
; YAML-NEXT: Offset: 0x28
; YAML: - Type: DATA
; YAML: - Type: R_WASM_TABLE_INDEX_I64
; YAML-NEXT: Index: 0
; YAML-NEXT: Offset: 0x6