| // 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(); |
| } |