clang/test/CodeGen/RISCV/riscv64-vararg.c

   1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2
   2 // RUN: %clang_cc1 -triple riscv64 -emit-llvm %s -o - | FileCheck %s
   3 // RUN: %clang_cc1 -triple riscv64 -target-feature +f -target-abi lp64f -emit-llvm %s -o - \
   4 // RUN:     | FileCheck %s
   5 // RUN: %clang_cc1 -triple riscv64 -target-feature +d -target-feature +f -target-abi lp64d -emit-llvm %s -o - \
   6 // RUN:     | FileCheck %s
   7 // RUN: %clang_cc1 -triple riscv64 -target-abi lp64e -emit-llvm %s -o - \
   8 // RUN:     | FileCheck %s
   9
  10 #include <stddef.h>
  11 #include <stdint.h>
  12
  13 struct tiny {
  14   uint16_t a, b, c, d;
  15 };
  16
  17 struct small {
  18   int64_t a, *b;
  19 };
  20
  21 struct small_aligned {
  22   __int128_t a;
  23 };
  24
  25 struct large {
  26   int64_t a, b, c, d;
  27 };
  28
  29 // Ensure that ABI lowering happens as expected for vararg calls.
  30 // Specifically, ensure that signext is emitted for varargs that will be
  31 // passed in registers but not on the stack. Ensure this takes into account
  32 // the use of "aligned" register pairs for varargs with 2*xlen alignment.
  33
  34 int f_va_callee(int, ...);
  35
  36 // CHECK-LABEL: define dso_local void @f_va_caller
  37 // CHECK-SAME: () #[[ATTR0:[0-9]+]] {
  38 // CHECK-NEXT:  entry:
  39 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL:%.*]] = alloca [[STRUCT_TINY:%.*]], align 2
  40 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL1:%.*]] = alloca [[STRUCT_SMALL:%.*]], align 8
  41 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL4:%.*]] = alloca [[STRUCT_SMALL_ALIGNED:%.*]], align 16
  42 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL6:%.*]] = alloca [[STRUCT_LARGE:%.*]], align 8
  43 // CHECK-NEXT:    [[BYVAL_TEMP:%.*]] = alloca [[STRUCT_LARGE]], align 8
  44 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL12:%.*]] = alloca [[STRUCT_SMALL_ALIGNED]], align 16
  45 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL16:%.*]] = alloca [[STRUCT_SMALL]], align 8
  46 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL21:%.*]] = alloca [[STRUCT_SMALL_ALIGNED]], align 16
  47 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL25:%.*]] = alloca [[STRUCT_SMALL]], align 8
  48 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL30:%.*]] = alloca [[STRUCT_SMALL_ALIGNED]], align 16
  49 // CHECK-NEXT:    [[DOTCOMPOUNDLITERAL34:%.*]] = alloca [[STRUCT_SMALL]], align 8
  50 // CHECK-NEXT:    [[A:%.*]] = getelementptr inbounds nuw [[STRUCT_TINY]], ptr [[DOTCOMPOUNDLITERAL]], i32 0, i32 0
  51 // CHECK-NEXT:    store i16 6, ptr [[A]], align 2
  52 // CHECK-NEXT:    [[B:%.*]] = getelementptr inbounds nuw [[STRUCT_TINY]], ptr [[DOTCOMPOUNDLITERAL]], i32 0, i32 1
  53 // CHECK-NEXT:    store i16 7, ptr [[B]], align 2
  54 // CHECK-NEXT:    [[C:%.*]] = getelementptr inbounds nuw [[STRUCT_TINY]], ptr [[DOTCOMPOUNDLITERAL]], i32 0, i32 2
  55 // CHECK-NEXT:    store i16 8, ptr [[C]], align 2
  56 // CHECK-NEXT:    [[D:%.*]] = getelementptr inbounds nuw [[STRUCT_TINY]], ptr [[DOTCOMPOUNDLITERAL]], i32 0, i32 3
  57 // CHECK-NEXT:    store i16 9, ptr [[D]], align 2
  58 // CHECK-NEXT:    [[A2:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL1]], i32 0, i32 0
  59 // CHECK-NEXT:    store i64 10, ptr [[A2]], align 8
  60 // CHECK-NEXT:    [[B3:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL1]], i32 0, i32 1
  61 // CHECK-NEXT:    store ptr null, ptr [[B3]], align 8
  62 // CHECK-NEXT:    [[A5:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL4]], i32 0, i32 0
  63 // CHECK-NEXT:    store i128 11, ptr [[A5]], align 16
  64 // CHECK-NEXT:    [[A7:%.*]] = getelementptr inbounds nuw [[STRUCT_LARGE]], ptr [[DOTCOMPOUNDLITERAL6]], i32 0, i32 0
  65 // CHECK-NEXT:    store i64 12, ptr [[A7]], align 8
  66 // CHECK-NEXT:    [[B8:%.*]] = getelementptr inbounds nuw [[STRUCT_LARGE]], ptr [[DOTCOMPOUNDLITERAL6]], i32 0, i32 1
  67 // CHECK-NEXT:    store i64 13, ptr [[B8]], align 8
  68 // CHECK-NEXT:    [[C9:%.*]] = getelementptr inbounds nuw [[STRUCT_LARGE]], ptr [[DOTCOMPOUNDLITERAL6]], i32 0, i32 2
  69 // CHECK-NEXT:    store i64 14, ptr [[C9]], align 8
  70 // CHECK-NEXT:    [[D10:%.*]] = getelementptr inbounds nuw [[STRUCT_LARGE]], ptr [[DOTCOMPOUNDLITERAL6]], i32 0, i32 3
  71 // CHECK-NEXT:    store i64 15, ptr [[D10]], align 8
  72 // CHECK-NEXT:    [[TMP0:%.*]] = load i64, ptr [[DOTCOMPOUNDLITERAL]], align 2
  73 // CHECK-NEXT:    [[TMP1:%.*]] = load [2 x i64], ptr [[DOTCOMPOUNDLITERAL1]], align 8
  74 // CHECK-NEXT:    [[COERCE_DIVE:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL4]], i32 0, i32 0
  75 // CHECK-NEXT:    [[TMP2:%.*]] = load i128, ptr [[COERCE_DIVE]], align 16
  76 // CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[BYVAL_TEMP]], ptr align 8 [[DOTCOMPOUNDLITERAL6]], i64 32, i1 false)
  77 // CHECK-NEXT:    [[CALL:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i64 noundef 3, double noundef 4.000000e+00, double noundef 5.000000e+00, i64 [[TMP0]], [2 x i64] [[TMP1]], i128 [[TMP2]], ptr noundef [[BYVAL_TEMP]])
  78 // CHECK-NEXT:    [[CALL11:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, fp128 noundef 0xL00000000000000004001400000000000, i32 noundef signext 6, i32 noundef signext 7, i32 noundef signext 8, i32 noundef signext 9)
  79 // CHECK-NEXT:    [[A13:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL12]], i32 0, i32 0
  80 // CHECK-NEXT:    store i128 5, ptr [[A13]], align 16
  81 // CHECK-NEXT:    [[COERCE_DIVE14:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL12]], i32 0, i32 0
  82 // CHECK-NEXT:    [[TMP3:%.*]] = load i128, ptr [[COERCE_DIVE14]], align 16
  83 // CHECK-NEXT:    [[CALL15:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i128 [[TMP3]], i32 noundef signext 6, i32 noundef signext 7, i32 noundef signext 8, i32 noundef signext 9)
  84 // CHECK-NEXT:    [[A17:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL16]], i32 0, i32 0
  85 // CHECK-NEXT:    store i64 5, ptr [[A17]], align 8
  86 // CHECK-NEXT:    [[B18:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL16]], i32 0, i32 1
  87 // CHECK-NEXT:    store ptr null, ptr [[B18]], align 8
  88 // CHECK-NEXT:    [[TMP4:%.*]] = load [2 x i64], ptr [[DOTCOMPOUNDLITERAL16]], align 8
  89 // CHECK-NEXT:    [[CALL19:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, [2 x i64] [[TMP4]], i32 noundef signext 6, i32 noundef signext 7, i32 noundef signext 8, i32 noundef signext 9)
  90 // CHECK-NEXT:    [[CALL20:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i32 noundef signext 5, fp128 noundef 0xL00000000000000004001800000000000, i32 noundef signext 7, i32 noundef signext 8, i32 noundef signext 9)
  91 // CHECK-NEXT:    [[A22:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL21]], i32 0, i32 0
  92 // CHECK-NEXT:    store i128 6, ptr [[A22]], align 16
  93 // CHECK-NEXT:    [[COERCE_DIVE23:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL21]], i32 0, i32 0
  94 // CHECK-NEXT:    [[TMP5:%.*]] = load i128, ptr [[COERCE_DIVE23]], align 16
  95 // CHECK-NEXT:    [[CALL24:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i32 noundef signext 5, i128 [[TMP5]], i32 noundef signext 7, i32 noundef signext 8, i32 noundef signext 9)
  96 // CHECK-NEXT:    [[A26:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL25]], i32 0, i32 0
  97 // CHECK-NEXT:    store i64 6, ptr [[A26]], align 8
  98 // CHECK-NEXT:    [[B27:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL25]], i32 0, i32 1
  99 // CHECK-NEXT:    store ptr null, ptr [[B27]], align 8
 100 // CHECK-NEXT:    [[TMP6:%.*]] = load [2 x i64], ptr [[DOTCOMPOUNDLITERAL25]], align 8
 101 // CHECK-NEXT:    [[CALL28:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i32 noundef signext 5, [2 x i64] [[TMP6]], i32 noundef signext 7, i32 noundef signext 8, i32 noundef signext 9)
 102 // CHECK-NEXT:    [[CALL29:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i32 noundef signext 5, i32 noundef signext 6, fp128 noundef 0xL00000000000000004001C00000000000, i32 noundef signext 8, i32 noundef signext 9)
 103 // CHECK-NEXT:    [[A31:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL30]], i32 0, i32 0
 104 // CHECK-NEXT:    store i128 7, ptr [[A31]], align 16
 105 // CHECK-NEXT:    [[COERCE_DIVE32:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL_ALIGNED]], ptr [[DOTCOMPOUNDLITERAL30]], i32 0, i32 0
 106 // CHECK-NEXT:    [[TMP7:%.*]] = load i128, ptr [[COERCE_DIVE32]], align 16
 107 // CHECK-NEXT:    [[CALL33:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i32 noundef signext 5, i32 noundef signext 6, i128 [[TMP7]], i32 noundef signext 8, i32 noundef signext 9)
 108 // CHECK-NEXT:    [[A35:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL34]], i32 0, i32 0
 109 // CHECK-NEXT:    store i64 7, ptr [[A35]], align 8
 110 // CHECK-NEXT:    [[B36:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[DOTCOMPOUNDLITERAL34]], i32 0, i32 1
 111 // CHECK-NEXT:    store ptr null, ptr [[B36]], align 8
 112 // CHECK-NEXT:    [[TMP8:%.*]] = load [2 x i64], ptr [[DOTCOMPOUNDLITERAL34]], align 8
 113 // CHECK-NEXT:    [[CALL37:%.*]] = call signext i32 (i32, ...) @f_va_callee(i32 noundef signext 1, i32 noundef signext 2, i32 noundef signext 3, i32 noundef signext 4, i32 noundef signext 5, i32 noundef signext 6, [2 x i64] [[TMP8]], i32 noundef signext 8, i32 noundef signext 9)
 114 // CHECK-NEXT:    ret void
 115 //
 116 void f_va_caller(void) {
 117   f_va_callee(1, 2, 3LL, 4.0f, 5.0, (struct tiny){6, 7, 8, 9},
 118               (struct small){10, NULL}, (struct small_aligned){11},
 119               (struct large){12, 13, 14, 15});
 120   f_va_callee(1, 2, 3, 4, 5.0L, 6, 7, 8, 9);
 121   f_va_callee(1, 2, 3, 4, (struct small_aligned){5}, 6, 7, 8, 9);
 122   f_va_callee(1, 2, 3, 4, (struct small){5, NULL}, 6, 7, 8, 9);
 123   f_va_callee(1, 2, 3, 4, 5, 6.0L, 7, 8, 9);
 124   f_va_callee(1, 2, 3, 4, 5, (struct small_aligned){6}, 7, 8, 9);
 125   f_va_callee(1, 2, 3, 4, 5, (struct small){6, NULL}, 7, 8, 9);
 126   f_va_callee(1, 2, 3, 4, 5, 6, 7.0L, 8, 9);
 127   f_va_callee(1, 2, 3, 4, 5, 6, (struct small_aligned){7}, 8, 9);
 128   f_va_callee(1, 2, 3, 4, 5, 6, (struct small){7, NULL}, 8, 9);
 129 }
 130
 131 // CHECK-LABEL: define dso_local signext i32 @f_va_1
 132 // CHECK-SAME: (ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
 133 // CHECK-NEXT:  entry:
 134 // CHECK-NEXT:    [[FMT_ADDR:%.*]] = alloca ptr, align 8
 135 // CHECK-NEXT:    [[VA:%.*]] = alloca ptr, align 8
 136 // CHECK-NEXT:    [[V:%.*]] = alloca i32, align 4
 137 // CHECK-NEXT:    store ptr [[FMT]], ptr [[FMT_ADDR]], align 8
 138 // CHECK-NEXT:    call void @llvm.va_start.p0(ptr [[VA]])
 139 // CHECK-NEXT:    [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 8
 140 // CHECK-NEXT:    [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i64 8
 141 // CHECK-NEXT:    store ptr [[ARGP_NEXT]], ptr [[VA]], align 8
 142 // CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARGP_CUR]], align 8
 143 // CHECK-NEXT:    store i32 [[TMP0]], ptr [[V]], align 4
 144 // CHECK-NEXT:    call void @llvm.va_end.p0(ptr [[VA]])
 145 // CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[V]], align 4
 146 // CHECK-NEXT:    ret i32 [[TMP1]]
 147 //
 148 int f_va_1(char *fmt, ...) {
 149   __builtin_va_list va;
 150
 151   __builtin_va_start(va, fmt);
 152   int v = __builtin_va_arg(va, int);
 153   __builtin_va_end(va);
 154
 155   return v;
 156 }
 157
 158 // An "aligned" register pair (where the first register is even-numbered) is
 159 // used to pass varargs with 2x xlen alignment and 2x xlen size. Ensure the
 160 // correct offsets are used.
 161
 162 // CHECK-LABEL: define dso_local fp128 @f_va_2
 163 // CHECK-SAME: (ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
 164 // CHECK-NEXT:  entry:
 165 // CHECK-NEXT:    [[FMT_ADDR:%.*]] = alloca ptr, align 8
 166 // CHECK-NEXT:    [[VA:%.*]] = alloca ptr, align 8
 167 // CHECK-NEXT:    [[V:%.*]] = alloca fp128, align 16
 168 // CHECK-NEXT:    store ptr [[FMT]], ptr [[FMT_ADDR]], align 8
 169 // CHECK-NEXT:    call void @llvm.va_start.p0(ptr [[VA]])
 170 // CHECK-NEXT:    [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 8
 171 // CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 15
 172 // CHECK-NEXT:    [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i64(ptr [[TMP0]], i64 -16)
 173 // CHECK-NEXT:    [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i64 16
 174 // CHECK-NEXT:    store ptr [[ARGP_NEXT]], ptr [[VA]], align 8
 175 // CHECK-NEXT:    [[TMP1:%.*]] = load fp128, ptr [[ARGP_CUR_ALIGNED]], align 16
 176 // CHECK-NEXT:    store fp128 [[TMP1]], ptr [[V]], align 16
 177 // CHECK-NEXT:    call void @llvm.va_end.p0(ptr [[VA]])
 178 // CHECK-NEXT:    [[TMP2:%.*]] = load fp128, ptr [[V]], align 16
 179 // CHECK-NEXT:    ret fp128 [[TMP2]]
 180 //
 181 long double f_va_2(char *fmt, ...) {
 182   __builtin_va_list va;
 183
 184   __builtin_va_start(va, fmt);
 185   long double v = __builtin_va_arg(va, long double);
 186   __builtin_va_end(va);
 187
 188   return v;
 189 }
 190
 191 // Two "aligned" register pairs.
 192
 193 // CHECK-LABEL: define dso_local fp128 @f_va_3
 194 // CHECK-SAME: (ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
 195 // CHECK-NEXT:  entry:
 196 // CHECK-NEXT:    [[FMT_ADDR:%.*]] = alloca ptr, align 8
 197 // CHECK-NEXT:    [[VA:%.*]] = alloca ptr, align 8
 198 // CHECK-NEXT:    [[V:%.*]] = alloca fp128, align 16
 199 // CHECK-NEXT:    [[W:%.*]] = alloca i32, align 4
 200 // CHECK-NEXT:    [[X:%.*]] = alloca fp128, align 16
 201 // CHECK-NEXT:    store ptr [[FMT]], ptr [[FMT_ADDR]], align 8
 202 // CHECK-NEXT:    call void @llvm.va_start.p0(ptr [[VA]])
 203 // CHECK-NEXT:    [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 8
 204 // CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 15
 205 // CHECK-NEXT:    [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i64(ptr [[TMP0]], i64 -16)
 206 // CHECK-NEXT:    [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i64 16
 207 // CHECK-NEXT:    store ptr [[ARGP_NEXT]], ptr [[VA]], align 8
 208 // CHECK-NEXT:    [[TMP1:%.*]] = load fp128, ptr [[ARGP_CUR_ALIGNED]], align 16
 209 // CHECK-NEXT:    store fp128 [[TMP1]], ptr [[V]], align 16
 210 // CHECK-NEXT:    [[ARGP_CUR1:%.*]] = load ptr, ptr [[VA]], align 8
 211 // CHECK-NEXT:    [[ARGP_NEXT2:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR1]], i64 8
 212 // CHECK-NEXT:    store ptr [[ARGP_NEXT2]], ptr [[VA]], align 8
 213 // CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARGP_CUR1]], align 8
 214 // CHECK-NEXT:    store i32 [[TMP2]], ptr [[W]], align 4
 215 // CHECK-NEXT:    [[ARGP_CUR3:%.*]] = load ptr, ptr [[VA]], align 8
 216 // CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR3]], i32 15
 217 // CHECK-NEXT:    [[ARGP_CUR3_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i64(ptr [[TMP3]], i64 -16)
 218 // CHECK-NEXT:    [[ARGP_NEXT4:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR3_ALIGNED]], i64 16
 219 // CHECK-NEXT:    store ptr [[ARGP_NEXT4]], ptr [[VA]], align 8
 220 // CHECK-NEXT:    [[TMP4:%.*]] = load fp128, ptr [[ARGP_CUR3_ALIGNED]], align 16
 221 // CHECK-NEXT:    store fp128 [[TMP4]], ptr [[X]], align 16
 222 // CHECK-NEXT:    call void @llvm.va_end.p0(ptr [[VA]])
 223 // CHECK-NEXT:    [[TMP5:%.*]] = load fp128, ptr [[V]], align 16
 224 // CHECK-NEXT:    [[TMP6:%.*]] = load fp128, ptr [[X]], align 16
 225 // CHECK-NEXT:    [[ADD:%.*]] = fadd fp128 [[TMP5]], [[TMP6]]
 226 // CHECK-NEXT:    ret fp128 [[ADD]]
 227 //
 228 long double f_va_3(char *fmt, ...) {
 229   __builtin_va_list va;
 230
 231   __builtin_va_start(va, fmt);
 232   long double v = __builtin_va_arg(va, long double);
 233   int w = __builtin_va_arg(va, int);
 234   long double x = __builtin_va_arg(va, long double);
 235   __builtin_va_end(va);
 236
 237   return v + x;
 238 }
 239
 240 // CHECK-LABEL: define dso_local signext i32 @f_va_4
 241 // CHECK-SAME: (ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
 242 // CHECK-NEXT:  entry:
 243 // CHECK-NEXT:    [[FMT_ADDR:%.*]] = alloca ptr, align 8
 244 // CHECK-NEXT:    [[VA:%.*]] = alloca ptr, align 8
 245 // CHECK-NEXT:    [[V:%.*]] = alloca i32, align 4
 246 // CHECK-NEXT:    [[TS:%.*]] = alloca [[STRUCT_TINY:%.*]], align 2
 247 // CHECK-NEXT:    [[SS:%.*]] = alloca [[STRUCT_SMALL:%.*]], align 8
 248 // CHECK-NEXT:    [[LS:%.*]] = alloca [[STRUCT_LARGE:%.*]], align 8
 249 // CHECK-NEXT:    [[RET:%.*]] = alloca i32, align 4
 250 // CHECK-NEXT:    store ptr [[FMT]], ptr [[FMT_ADDR]], align 8
 251 // CHECK-NEXT:    call void @llvm.va_start.p0(ptr [[VA]])
 252 // CHECK-NEXT:    [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 8
 253 // CHECK-NEXT:    [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i64 8
 254 // CHECK-NEXT:    store ptr [[ARGP_NEXT]], ptr [[VA]], align 8
 255 // CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARGP_CUR]], align 8
 256 // CHECK-NEXT:    store i32 [[TMP0]], ptr [[V]], align 4
 257 // CHECK-NEXT:    [[ARGP_CUR1:%.*]] = load ptr, ptr [[VA]], align 8
 258 // CHECK-NEXT:    [[ARGP_NEXT2:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR1]], i64 8
 259 // CHECK-NEXT:    store ptr [[ARGP_NEXT2]], ptr [[VA]], align 8
 260 // CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr align 2 [[TS]], ptr align 8 [[ARGP_CUR1]], i64 8, i1 false)
 261 // CHECK-NEXT:    [[ARGP_CUR3:%.*]] = load ptr, ptr [[VA]], align 8
 262 // CHECK-NEXT:    [[ARGP_NEXT4:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR3]], i64 16
 263 // CHECK-NEXT:    store ptr [[ARGP_NEXT4]], ptr [[VA]], align 8
 264 // CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[SS]], ptr align 8 [[ARGP_CUR3]], i64 16, i1 false)
 265 // CHECK-NEXT:    [[ARGP_CUR5:%.*]] = load ptr, ptr [[VA]], align 8
 266 // CHECK-NEXT:    [[ARGP_NEXT6:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR5]], i64 8
 267 // CHECK-NEXT:    store ptr [[ARGP_NEXT6]], ptr [[VA]], align 8
 268 // CHECK-NEXT:    [[TMP1:%.*]] = load ptr, ptr [[ARGP_CUR5]], align 8
 269 // CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[LS]], ptr align 8 [[TMP1]], i64 32, i1 false)
 270 // CHECK-NEXT:    call void @llvm.va_end.p0(ptr [[VA]])
 271 // CHECK-NEXT:    [[A:%.*]] = getelementptr inbounds nuw [[STRUCT_TINY]], ptr [[TS]], i32 0, i32 0
 272 // CHECK-NEXT:    [[TMP2:%.*]] = load i16, ptr [[A]], align 2
 273 // CHECK-NEXT:    [[CONV:%.*]] = zext i16 [[TMP2]] to i64
 274 // CHECK-NEXT:    [[A7:%.*]] = getelementptr inbounds nuw [[STRUCT_SMALL]], ptr [[SS]], i32 0, i32 0
 275 // CHECK-NEXT:    [[TMP3:%.*]] = load i64, ptr [[A7]], align 8
 276 // CHECK-NEXT:    [[ADD:%.*]] = add nsw i64 [[CONV]], [[TMP3]]
 277 // CHECK-NEXT:    [[C:%.*]] = getelementptr inbounds nuw [[STRUCT_LARGE]], ptr [[LS]], i32 0, i32 2
 278 // CHECK-NEXT:    [[TMP4:%.*]] = load i64, ptr [[C]], align 8
 279 // CHECK-NEXT:    [[ADD8:%.*]] = add nsw i64 [[ADD]], [[TMP4]]
 280 // CHECK-NEXT:    [[CONV9:%.*]] = trunc i64 [[ADD8]] to i32
 281 // CHECK-NEXT:    store i32 [[CONV9]], ptr [[RET]], align 4
 282 // CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[RET]], align 4
 283 // CHECK-NEXT:    ret i32 [[TMP5]]
 284 //
 285 int f_va_4(char *fmt, ...) {
 286   __builtin_va_list va;
 287
 288   __builtin_va_start(va, fmt);
 289   int v = __builtin_va_arg(va, int);
 290   struct tiny ts = __builtin_va_arg(va, struct tiny);
 291   struct small ss = __builtin_va_arg(va, struct small);
 292   struct large ls = __builtin_va_arg(va, struct large);
 293   __builtin_va_end(va);
 294
 295   int ret = ts.a + ss.a + ls.c;
 296
 297   return ret;
 298 }