1 // RUN: %clang_cc1 -triple wasm32-unknown-unknown -o - -emit-llvm %s | FileCheck %s 2 3 #include <stdarg.h> 4 5 int test_i32(char *fmt, ...) { 6 va_list va; 7 8 va_start(va, fmt); 9 int v = va_arg(va, int); 10 va_end(va); 11 12 return v; 13 } 14 15 // CHECK-LABEL: define i32 @test_i32(i8*{{.*}} %fmt, ...) {{.*}} { 16 // CHECK: [[FMT_ADDR:%[^,=]+]] = alloca i8*, align 4 17 // CHECK: [[VA:%[^,=]+]] = alloca i8*, align 4 18 // CHECK: [[V:%[^,=]+]] = alloca i32, align 4 19 // CHECK: store i8* %fmt, i8** [[FMT_ADDR]], align 4 20 // CHECK: [[VA1:%[^,=]+]] = bitcast i8** [[VA]] to i8* 21 // CHECK: call void @llvm.va_start(i8* [[VA1]]) 22 // CHECK: [[ARGP_CUR:%[^,=]+]] = load i8*, i8** [[VA]], align 4 23 // CHECK: [[ARGP_NEXT:%[^,=]+]] = getelementptr inbounds i8, i8* [[ARGP_CUR]], i32 4 24 // CHECK: store i8* [[ARGP_NEXT]], i8** [[VA]], align 4 25 // CHECK: [[R3:%[^,=]+]] = bitcast i8* [[ARGP_CUR]] to i32* 26 // CHECK: [[R4:%[^,=]+]] = load i32, i32* [[R3]], align 4 27 // CHECK: store i32 [[R4]], i32* [[V]], align 4 28 // CHECK: [[VA2:%[^,=]+]] = bitcast i8** [[VA]] to i8* 29 // CHECK: call void @llvm.va_end(i8* [[VA2]]) 30 // CHECK: [[R5:%[^,=]+]] = load i32, i32* [[V]], align 4 31 // CHECK: ret i32 [[R5]] 32 // CHECK: } 33 34 long long test_i64(char *fmt, ...) { 35 va_list va; 36 37 va_start(va, fmt); 38 long long v = va_arg(va, long long); 39 va_end(va); 40 41 return v; 42 } 43 44 // CHECK-LABEL: define i64 @test_i64(i8*{{.*}} %fmt, ...) {{.*}} { 45 // CHECK: [[FMT_ADDR:%[^,=]+]] = alloca i8*, align 4 46 // CHECK: [[VA:%[^,=]+]] = alloca i8*, align 4 47 // CHECK: [[V:%[^,=]+]] = alloca i64, align 8 48 // CHECK: store i8* %fmt, i8** [[FMT_ADDR]], align 4 49 // CHECK: [[VA1:%[^,=]+]] = bitcast i8** [[VA]] to i8* 50 // CHECK: call void @llvm.va_start(i8* [[VA1]]) 51 // CHECK: [[ARGP_CUR:%[^,=]+]] = load i8*, i8** [[VA]], align 4 52 // CHECK: [[R0:%[^,=]+]] = ptrtoint i8* [[ARGP_CUR]] to i32 53 // CHECK: [[R1:%[^,=]+]] = add i32 [[R0]], 7 54 // CHECK: [[R2:%[^,=]+]] = and i32 [[R1]], -8 55 // CHECK: [[ARGP_CUR_ALIGNED:%[^,=]+]] = inttoptr i32 [[R2]] to i8* 56 // CHECK: [[ARGP_NEXT:%[^,=]+]] = getelementptr inbounds i8, i8* [[ARGP_CUR_ALIGNED]], i32 8 57 // CHECK: store i8* [[ARGP_NEXT]], i8** [[VA]], align 4 58 // CHECK: [[R3:%[^,=]+]] = bitcast i8* [[ARGP_CUR_ALIGNED]] to i64* 59 // CHECK: [[R4:%[^,=]+]] = load i64, i64* [[R3]], align 8 60 // CHECK: store i64 [[R4]], i64* [[V]], align 8 61 // CHECK: [[VA2:%[^,=]+]] = bitcast i8** [[VA]] to i8* 62 // CHECK: call void @llvm.va_end(i8* [[VA2]]) 63 // CHECK: [[R5:%[^,=]+]] = load i64, i64* [[V]], align 8 64 // CHECK: ret i64 [[R5]] 65 // CHECK: } 66 67 struct S { 68 int x; 69 int y; 70 int z; 71 }; 72 73 struct S test_struct(char *fmt, ...) { 74 va_list va; 75 76 va_start(va, fmt); 77 struct S v = va_arg(va, struct S); 78 va_end(va); 79 80 return v; 81 } 82 83 // CHECK: define void @test_struct([[STRUCT_S:%[^,=]+]]*{{.*}} noalias sret %agg.result, i8*{{.*}} %fmt, ...) {{.*}} { 84 // CHECK: [[FMT_ADDR:%[^,=]+]] = alloca i8*, align 4 85 // CHECK: [[VA:%[^,=]+]] = alloca i8*, align 4 86 // CHECK: [[V:%[^,=]+]] = alloca [[STRUCT_S]], align 4 87 // CHECK: store i8* %fmt, i8** [[FMT_ADDR]], align 4 88 // CHECK: [[VA1:%[^,=]+]] = bitcast i8** [[VA]] to i8* 89 // CHECK: call void @llvm.va_start(i8* [[VA1]]) 90 // CHECK: [[ARGP_CUR:%[^,=]+]] = load i8*, i8** [[VA]], align 4 91 // CHECK: [[ARGP_NEXT:%[^,=]+]] = getelementptr inbounds i8, i8* [[ARGP_CUR]], i32 12 92 // CHECK: store i8* [[ARGP_NEXT]], i8** [[VA]], align 4 93 // CHECK: [[R3:%[^,=]+]] = bitcast i8* [[ARGP_CUR]] to [[STRUCT_S]]* 94 // CHECK: [[R4:%[^,=]+]] = bitcast [[STRUCT_S]]* [[V]] to i8* 95 // CHECK: [[R5:%[^,=]+]] = bitcast [[STRUCT_S]]* [[R3]] to i8* 96 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[R4]], i8* [[R5]], i32 12, i32 4, i1 false) 97 // CHECK: [[VA2:%[^,=]+]] = bitcast i8** [[VA]] to i8* 98 // CHECK: call void @llvm.va_end(i8* [[VA2]]) 99 // CHECK: [[R6:%[^,=]+]] = bitcast [[STRUCT_S]]* %agg.result to i8* 100 // CHECK: [[R7:%[^,=]+]] = bitcast [[STRUCT_S]]* [[V]] to i8* 101 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[R6]], i8* [[R7]], i32 12, i32 4, i1 false) 102 // CHECK: ret void 103 // CHECK: } 104
