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// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
// RUN: %clang_cc1 -triple wasm32 -target-feature +reference-types -o - -emit-llvm %s | FileCheck %s
typedef void (*__funcref funcref_t)();
typedef int (*__funcref fn_funcref_t)(int);
typedef int (*fn_t)(int);
// Null funcref builtin call
// CHECK-LABEL: @get_null(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = call ptr addrspace(20) @llvm.wasm.ref.null.func()
// CHECK-NEXT: ret ptr addrspace(20) [[TMP0]]
//
funcref_t get_null() {
return __builtin_wasm_ref_null_func();
}
// Call to null funcref builtin but requires cast since
// default return value for builtin is a funcref with function type () -> ().
// CHECK-LABEL: @get_null_ii(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = call ptr addrspace(20) @llvm.wasm.ref.null.func()
// CHECK-NEXT: ret ptr addrspace(20) [[TMP0]]
//
fn_funcref_t get_null_ii() {
return (fn_funcref_t) __builtin_wasm_ref_null_func();
}
// Identity function for funcref.
// CHECK-LABEL: @identity(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[FN_ADDR:%.*]] = alloca ptr addrspace(20), align 4
// CHECK-NEXT: store ptr addrspace(20) [[FN:%.*]], ptr [[FN_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr addrspace(20), ptr [[FN_ADDR]], align 4
// CHECK-NEXT: ret ptr addrspace(20) [[TMP0]]
//
funcref_t identity(funcref_t fn) {
return fn;
}
void helper(funcref_t);
// Pass funcref ref as an argument to a helper function.
// CHECK-LABEL: @handle(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[FN_ADDR:%.*]] = alloca ptr addrspace(20), align 4
// CHECK-NEXT: store ptr addrspace(20) [[FN:%.*]], ptr [[FN_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr addrspace(20), ptr [[FN_ADDR]], align 4
// CHECK-NEXT: call void @helper(ptr addrspace(20) noundef [[TMP0]])
// CHECK-NEXT: ret i32 0
//
int handle(funcref_t fn) {
helper(fn);
return 0;
}
// Return funcref from function pointer.
// CHECK-LABEL: @get_ref(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[FNPTR_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT: store ptr [[FNPTR:%.*]], ptr [[FNPTR_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[FNPTR_ADDR]], align 4
// CHECK-NEXT: [[TMP1:%.*]] = addrspacecast ptr [[TMP0]] to ptr addrspace(20)
// CHECK-NEXT: ret ptr addrspace(20) [[TMP1]]
//
fn_funcref_t get_ref(fn_t fnptr) {
return (fn_funcref_t) fnptr;
}
// Call funcref
// CHECK-LABEL: @call_fn(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[REF_ADDR:%.*]] = alloca ptr addrspace(20), align 4
// CHECK-NEXT: [[X_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT: store ptr addrspace(20) [[REF:%.*]], ptr [[REF_ADDR]], align 4
// CHECK-NEXT: store i32 [[X:%.*]], ptr [[X_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr addrspace(20), ptr [[REF_ADDR]], align 4
// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[X_ADDR]], align 4
// CHECK-NEXT: [[CALL:%.*]] = call addrspace(20) i32 [[TMP0]](i32 noundef [[TMP1]])
// CHECK-NEXT: ret i32 [[CALL]]
//
int call_fn(fn_funcref_t ref, int x) {
return ref(x);
}
typedef fn_funcref_t (*builtin_refnull_t)();
// Calling ref.null through a function pointer.
// CHECK-LABEL: @get_null_fptr(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[REFNULL_ADDR:%.*]] = alloca ptr, align 4
// CHECK-NEXT: store ptr [[REFNULL:%.*]], ptr [[REFNULL_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[REFNULL_ADDR]], align 4
// CHECK-NEXT: [[CALL:%.*]] = call ptr addrspace(20) [[TMP0]]()
// CHECK-NEXT: ret ptr addrspace(20) [[CALL]]
//
fn_funcref_t get_null_fptr(builtin_refnull_t refnull) {
return refnull();
}
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