clang/test/CodeGen/arm-arguments.c

   1 // REQUIRES: arm-registered-target
   2 // RUN: %clang_cc1 -triple armv7-apple-darwin9 -target-feature +neon -target-abi apcs-gnu -emit-llvm -w -o - %s | FileCheck -check-prefix=APCS-GNU %s
   3 // RUN: %clang_cc1 -triple armv7-apple-darwin9 -target-feature +neon -target-abi aapcs -emit-llvm -w -o - %s | FileCheck -check-prefix=AAPCS %s
   4
   5 // APCS-GNU-LABEL: define{{.*}} signext i8 @f0()
   6 // AAPCS-LABEL: define{{.*}} arm_aapcscc signext i8 @f0()
   7 char f0(void) {
   8   return 0;
   9 }
  10
  11 // APCS-GNU-LABEL: define{{.*}} i8 @f1()
  12 // AAPCS-LABEL: define{{.*}} arm_aapcscc i8 @f1()
  13 struct s1 { char f0; };
  14 struct s1 f1(void) {}
  15
  16 // APCS-GNU-LABEL: define{{.*}} i16 @f2()
  17 // AAPCS-LABEL: define{{.*}} arm_aapcscc i16 @f2()
  18 struct s2 { short f0; };
  19 struct s2 f2(void) {}
  20
  21 // APCS-GNU-LABEL: define{{.*}} i32 @f3()
  22 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f3()
  23 struct s3 { int f0; };
  24 struct s3 f3(void) {}
  25
  26 // APCS-GNU-LABEL: define{{.*}} i32 @f4()
  27 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f4()
  28 struct s4 { struct s4_0 { int f0; } f0; };
  29 struct s4 f4(void) {}
  30
  31 // APCS-GNU-LABEL: define{{.*}} void @f5(
  32 // APCS-GNU: ptr dead_on_unwind noalias writable sret
  33 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f5()
  34 struct s5 { struct { } f0; int f1; };
  35 struct s5 f5(void) {}
  36
  37 // APCS-GNU-LABEL: define{{.*}} void @f6(
  38 // APCS-GNU: ptr dead_on_unwind noalias writable sret
  39 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f6()
  40 struct s6 { int f0[1]; };
  41 struct s6 f6(void) {}
  42
  43 // APCS-GNU-LABEL: define{{.*}} void @f7()
  44 // AAPCS-LABEL: define{{.*}} arm_aapcscc void @f7()
  45 struct s7 { struct { int : 0; } f0; };
  46 struct s7 f7(void) {}
  47
  48 // APCS-GNU-LABEL: define{{.*}} void @f8(
  49 // APCS-GNU: ptr dead_on_unwind noalias writable sret
  50 // AAPCS-LABEL: define{{.*}} arm_aapcscc void @f8()
  51 struct s8 { struct { int : 0; } f0[1]; };
  52 struct s8 f8(void) {}
  53
  54 // APCS-GNU-LABEL: define{{.*}} i32 @f9()
  55 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f9()
  56 struct s9 { int f0; int : 0; };
  57 struct s9 f9(void) {}
  58
  59 // APCS-GNU-LABEL: define{{.*}} i32 @f10()
  60 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f10()
  61 struct s10 { int f0; int : 0; int : 0; };
  62 struct s10 f10(void) {}
  63
  64 // APCS-GNU-LABEL: define{{.*}} void @f11(
  65 // APCS-GNU: ptr dead_on_unwind noalias writable sret
  66 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f11()
  67 struct s11 { int : 0; int f0; };
  68 struct s11 f11(void) {}
  69
  70 // APCS-GNU-LABEL: define{{.*}} i32 @f12()
  71 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f12()
  72 union u12 { char f0; short f1; int f2; };
  73 union u12 f12(void) {}
  74
  75 // APCS-GNU-LABEL: define{{.*}} void @f13(
  76 // APCS-GNU: ptr dead_on_unwind noalias writable sret
  77
  78 // FIXME: This should return a float.
  79 // AAPCS-FIXME: darm_aapcscc efine float @f13()
  80 struct s13 { float f0; };
  81 struct s13 f13(void) {}
  82
  83 // APCS-GNU-LABEL: define{{.*}} void @f14(
  84 // APCS-GNU: ptr dead_on_unwind noalias writable sret
  85 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f14()
  86 union u14 { float f0; };
  87 union u14 f14(void) {}
  88
  89 // APCS-GNU-LABEL: define{{.*}} void @f15()
  90 // AAPCS-LABEL: define{{.*}} arm_aapcscc void @f15()
  91 void f15(struct s7 a0) {}
  92
  93 // APCS-GNU-LABEL: define{{.*}} void @f16()
  94 // AAPCS-LABEL: define{{.*}} arm_aapcscc void @f16()
  95 void f16(struct s8 a0) {}
  96
  97 // APCS-GNU-LABEL: define{{.*}} i32 @f17()
  98 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f17()
  99 struct s17 { short f0 : 13; char f1 : 4; };
 100 struct s17 f17(void) {}
 101
 102 // APCS-GNU-LABEL: define{{.*}} i32 @f18()
 103 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f18()
 104 struct s18 { short f0; char f1 : 4; };
 105 struct s18 f18(void) {}
 106
 107 // APCS-GNU-LABEL: define{{.*}} void @f19(
 108 // APCS-GNU: ptr dead_on_unwind noalias writable sret
 109 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f19()
 110 struct s19 { int f0; struct s8 f1; };
 111 struct s19 f19(void) {}
 112
 113 // APCS-GNU-LABEL: define{{.*}} void @f20(
 114 // APCS-GNU: ptr dead_on_unwind noalias writable sret
 115 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f20()
 116 struct s20 { struct s8 f1; int f0; };
 117 struct s20 f20(void) {}
 118
 119 // APCS-GNU-LABEL: define{{.*}} i8 @f21()
 120 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f21()
 121 struct s21 { struct {} f1; int f0 : 4; };
 122 struct s21 f21(void) {}
 123
 124 // APCS-GNU-LABEL: define{{.*}} i16 @f22()
 125 // APCS-GNU-LABEL: define{{.*}} i32 @f23()
 126 // APCS-GNU-LABEL: define{{.*}} i64 @f24()
 127 // APCS-GNU-LABEL: define{{.*}} i128 @f25()
 128 // APCS-GNU-LABEL: define{{.*}} i64 @f26()
 129 // APCS-GNU-LABEL: define{{.*}} i128 @f27()
 130 // AAPCS-LABEL: define{{.*}} arm_aapcscc i16 @f22()
 131 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f23()
 132 // AAPCS: define{{.*}} arm_aapcscc void @f24({{.*}} dead_on_unwind noalias writable sret
 133 // AAPCS: define{{.*}} arm_aapcscc void @f25({{.*}} dead_on_unwind noalias writable sret
 134 // AAPCS: define{{.*}} arm_aapcscc void @f26({{.*}} dead_on_unwind noalias writable sret
 135 // AAPCS: define{{.*}} arm_aapcscc void @f27({{.*}} dead_on_unwind noalias writable sret
 136 _Complex char       f22(void) {}
 137 _Complex short      f23(void) {}
 138 _Complex int        f24(void) {}
 139 _Complex long long  f25(void) {}
 140 _Complex float      f26(void) {}
 141 _Complex double     f27(void) {}
 142
 143 // APCS-GNU-LABEL: define{{.*}} i16 @f28()
 144 // AAPCS-LABEL: define{{.*}} arm_aapcscc i16 @f28()
 145 struct s28 { _Complex char f0; };
 146 struct s28 f28() {}
 147
 148 // APCS-GNU-LABEL: define{{.*}} i32 @f29()
 149 // AAPCS-LABEL: define{{.*}} arm_aapcscc i32 @f29()
 150 struct s29 { _Complex short f0; };
 151 struct s29 f29() {}
 152
 153 // APCS-GNU: define{{.*}} void @f30({{.*}} dead_on_unwind noalias writable sret
 154 // AAPCS: define{{.*}} arm_aapcscc void @f30({{.*}} dead_on_unwind noalias writable sret
 155 struct s30 { _Complex int f0; };
 156 struct s30 f30() {}
 157
 158 // PR11905
 159 struct s31 { char x; };
 160 void f31(struct s31 s) { }
 161 // AAPCS: @f31([1 x i32] %s.coerce)
 162 // AAPCS: %s = alloca %struct.s31, align 1
 163 // AAPCS: [[TEMP:%.*]] = alloca [1 x i32], align 4
 164 // AAPCS: store [1 x i32] %s.coerce, ptr [[TEMP]], align 4
 165 // APCS-GNU: @f31([1 x i32] %s.coerce)
 166 // APCS-GNU: %s = alloca %struct.s31, align 1
 167 // APCS-GNU: [[TEMP:%.*]] = alloca [1 x i32], align 4
 168 // APCS-GNU: store [1 x i32] %s.coerce, ptr [[TEMP]], align 4
 169
 170 // PR13562
 171 struct s32 { double x; };
 172 void f32(struct s32 s) { }
 173 // AAPCS: @f32([1 x i64] %s.coerce)
 174 // APCS-GNU: @f32([2 x i32] %s.coerce)
 175
 176 // PR13350
 177 struct s33 { char buf[32*32]; };
 178 void f33(struct s33 s) { }
 179 // APCS-GNU-LABEL: define{{.*}} void @f33(ptr noundef byval(%struct.s33) align 4 %s)
 180 // AAPCS-LABEL: define{{.*}} arm_aapcscc void @f33(ptr noundef byval(%struct.s33) align 4 %s)
 181
 182 // PR14048
 183 struct s34 { char c; };
 184 void f34(struct s34 s);
 185 void g34(struct s34 *s) { f34(*s); }
 186 // AAPCS: @g34(ptr noundef %s)
 187 // AAPCS: %[[a:.*]] = alloca [1 x i32]
 188 // AAPCS: load [1 x i32], ptr %[[a]]
 189
 190 struct s35
 191 {
 192    float v[18]; //make sure byval is on.
 193 } __attribute__((aligned(16)));
 194 typedef struct s35 s35_with_align;
 195
 196 typedef __attribute__((neon_vector_type(4))) float float32x4_t;
 197 static __attribute__((__always_inline__, __nodebug__)) float32x4_t vaddq_f32(
 198        float32x4_t __a, float32x4_t __b) {
 199  return __a + __b;
 200 }
 201 float32x4_t f35(int i, s35_with_align s1, s35_with_align s2) {
 202   float32x4_t v = vaddq_f32(*(float32x4_t *)&s1,
 203                             *(float32x4_t *)&s2);
 204   return v;
 205 }
 206 // APCS-GNU-LABEL: define{{.*}} <4 x float> @f35(i32 noundef %i, ptr noundef byval(%struct.s35) align 4 %0, ptr noundef byval(%struct.s35) align 4 %1)
 207 // APCS-GNU: %[[a:.*]] = alloca %struct.s35, align 16
 208 // APCS-GNU: call void @llvm.memcpy.p0.p0.i32(ptr align {{[0-9]+}} %[[a]], ptr align {{[0-9]+}} %0
 209 // APCS-GNU: load <4 x float>, ptr %[[a]], align 16
 210
 211 // AAPCS-LABEL: define{{.*}} arm_aapcscc <4 x float> @f35(i32 noundef %i, ptr noundef byval(%struct.s35) align 4 %s1, ptr noundef byval(%struct.s35) align 4 %s2)
 212 // AAPCS: %[[a_addr:.*]] = alloca <4 x float>, align 16
 213 // AAPCS: %[[b_addr:.*]] = alloca <4 x float>, align 16
 214 // AAPCS: %[[a:.*]] = load <4 x float>, ptr %s1, align 4
 215 // AAPCS: %[[b:.*]] = load <4 x float>, ptr %s2, align 4
 216 // AAPCS: store <4 x float> %[[a]], ptr %[[a_addr]], align 16
 217 // AAPCS: store <4 x float> %[[b]], ptr %[[b_addr]], align 16