test/CodeGen/ext-int.c

// RUN: %clang_cc1 -std=c23 -triple x86_64-gnu-linux -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK64,LIN64
// RUN: %clang_cc1 -std=c23 -triple x86_64-windows-pc -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK64,WIN64
// RUN: %clang_cc1 -std=c23 -triple i386-gnu-linux -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,LIN32
// RUN: %clang_cc1 -std=c23 -triple i386-windows-pc -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,WIN32

// CHECK64: %struct.S1 = type { i32, [4 x i8], [24 x i8] }
// WIN32: %struct.S1 = type { i32, [4 x i8], [24 x i8] }
// LIN32: %struct.S1 = type { i32, [20 x i8] }
// CHECK64: %struct.S2 = type { [40 x i8], i32, [4 x i8] }
// WIN32: %struct.S2 = type { [40 x i8], i32, [4 x i8] }
// LIN32: %struct.S2 = type { [36 x i8], i32 }
// LIN64: %struct.S3 = type { [17 x i8], [7 x i8] }
// WIN64: %struct.S3 = type { [24 x i8] }

//GH62207
unsigned _BitInt(1) GlobSize1 = 0;
// CHECK: @GlobSize1 = {{.*}}global i8 0

// CHECK64: @__const.foo.A = private unnamed_addr constant { i32, [4 x i8], <{ i8, [23 x i8] }> } { i32 1, [4 x i8] zeroinitializer, <{ i8, [23 x i8] }> <{ i8 -86, [23 x i8] zeroinitializer }> }, align 8
// @BigGlob = global [40 x i8] c"\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF\FF", align 8
// CHECK64: @f.p = internal global <{ i8, i8, [22 x i8] }> <{ i8 16, i8 39, [22 x i8] zeroinitializer }>, align 8

void GenericTest(_BitInt(3) a, unsigned _BitInt(3) b, _BitInt(4) c) {
  // CHECK: define {{.*}}void @GenericTest
  int which = _Generic(a, _BitInt(3): 1, unsigned _BitInt(3) : 2, _BitInt(4) : 3);
  // CHECK: store i32 1
  int which2 = _Generic(b, _BitInt(3): 1, unsigned _BitInt(3) : 2, _BitInt(4) : 3);
  // CHECK: store i32 2
  int which3 = _Generic(c, _BitInt(3): 1, unsigned _BitInt(3) : 2, _BitInt(4) : 3);
  // CHECK: store i32 3
}

void VLATest(_BitInt(3) A, _BitInt(99) B, _BitInt(123) C) {
  // CHECK: define {{.*}}void @VLATest
  int AR1[A];
  // CHECK: %[[A:.+]] = zext i3 %{{.+}} to i[[INDXSIZE:[0-9]+]]
  // CHECK: %[[VLA1:.+]] = alloca i32, i[[INDXSIZE]] %[[A]]
  int AR2[B];
  // CHECK: %[[B:.+]] = trunc i99 %{{.+}} to i[[INDXSIZE]]
  // CHECK: %[[VLA2:.+]] = alloca i32, i[[INDXSIZE]] %[[B]]
  int AR3[C];
  // CHECK: %[[C:.+]] = trunc i123 %{{.+}} to i[[INDXSIZE]]
  // CHECK: %[[VLA3:.+]] = alloca i32, i[[INDXSIZE]] %[[C]]
}

struct S {
  _BitInt(17) A;
  _BitInt(128) B;
  _BitInt(17) C;
};

void OffsetOfTest(void) {
  // CHECK: define {{.*}}void @OffsetOfTest
  int A = __builtin_offsetof(struct S,A);
  // CHECK: store i32 0, ptr %{{.+}}
  int B = __builtin_offsetof(struct S,B);
  // CHECK64: store i32 8, ptr %{{.+}}
  // LIN32: store i32 4, ptr %{{.+}}
  // WIN32: store i32 8, ptr %{{.+}}
  int C = __builtin_offsetof(struct S,C);
  // CHECK64: store i32 24, ptr %{{.+}}
  // LIN32: store i32 20, ptr %{{.+}}
  // WIN32: store i32 24, ptr %{{.+}}
}

void Size1ExtIntParam(unsigned _BitInt(1) A) {
  // CHECK: define {{.*}}void @Size1ExtIntParam(i1{{.*}}  %[[PARAM:.+]])
  // CHECK: %[[PARAM_ADDR:.+]] = alloca i8
  // CHECK: %[[B:.+]] = alloca [5 x i8]
  // CHECK: %[[STOREDV:.+]] = zext i1 %[[PARAM]] to i8
  // CHECK: store i8 %[[STOREDV]], ptr %[[PARAM_ADDR]]
  unsigned _BitInt(1) B[5];

  // CHECK: %[[PARAM_LOAD:.+]] = load i8, ptr %[[PARAM_ADDR]]
  // CHECK: %[[LOADEDV:.+]] = trunc i8 %0 to i1
  // CHECK: %[[IDX:.+]] = getelementptr inbounds [5 x i8], ptr %[[B]]
  // CHECK: %[[STOREDV1:.+]] = zext i1 %[[LOADEDV]] to i8
  // CHECK: store i8 %[[STOREDV1]], ptr %[[IDX]]
  B[2] = A;
}

#if __BITINT_MAXWIDTH__ > 128
struct S1 {
  _BitInt(17) A;
  _BitInt(129) B;
};

int foo(int a) {
  // CHECK: %A1 = getelementptr inbounds nuw %struct.S1, ptr %B, i32 0, i32 0
  // CHECK: store i32 1, ptr %A1
  // CHECK64: %B2 = getelementptr inbounds nuw %struct.S1, ptr %B, i32 0, i32 2
  // WIN32: %B2 = getelementptr inbounds nuw %struct.S1, ptr %B, i32 0, i32 2
  // LIN32: %B2 = getelementptr inbounds nuw %struct.S1, ptr %B, i32 0, i32 1
  // CHECK: %[[V1:.+]] = load i32, ptr %a.addr, align 4
  // CHECK: %conv = sext i32 %[[V1]] to i129
  // CHECK64: storedv = sext i129 %conv to i192
  // WIN32: storedv = sext i129 %conv to i192
  // LIN32: storedv = sext i129 %conv to i160
  // CHECK64: store i192 %storedv, ptr %B2, align 8
  // WIN32: store i192 %storedv, ptr %B2, align 8
  // LIN32: store i160 %storedv, ptr %B2, align 4
  // CHECK64: %B3 = getelementptr inbounds nuw %struct.S1, ptr %A, i32 0, i32 2
  // WIN32: %B3 = getelementptr inbounds nuw %struct.S1, ptr %A, i32 0, i32 2
  // LIN32: %B3 = getelementptr inbounds nuw %struct.S1, ptr %A, i32 0, i32 1
  // CHECK64: %[[V2:.+]] = load i192, ptr %B3, align 8
  // WIN32: %[[V2:.+]] = load i192, ptr %B3, align 8
  // LIN32: %[[V2:.+]] = load i160, ptr %B3, align 4
  // CHECK64: %loadedv = trunc i192 %[[V2]] to i129
  // WIN32: %loadedv = trunc i192 %[[V2]] to i129
  // LIN32: %loadedv = trunc i160 %[[V2]] to i129
  // CHECK: %conv4 = trunc i129 %loadedv to i32
  struct S1 A = {1, 170};
  struct S1 B = {1, a};
  return (int)A.B + (int)B.B;
}

struct S2 {
  _BitInt(257) A;
  int B;
};

_BitInt(257) bar() {
  // CHECK64: define {{.*}}void @bar(ptr {{.*}} sret([40 x i8]) align 8 %[[RET:.+]])
  // CHECK64: %A = alloca %struct.S2, align 8
  // CHECK64: %0 = getelementptr inbounds { <{ i8, [39 x i8] }>, i32, [4 x i8] }, ptr %A, i32 0, i32 0
  // CHECK64: %1 = getelementptr inbounds <{ i8, [39 x i8] }>, ptr %0, i32 0, i32 0
  // CHECK64: store i8 1, ptr %1, align 8
  // CHECK64: %2 = getelementptr inbounds { <{ i8, [39 x i8] }>, i32, [4 x i8] }, ptr %A, i32 0, i32 1
  // CHECK64: store i32 10000, ptr %2, align 8
  // CHECK64: %A1 = getelementptr inbounds nuw %struct.S2, ptr %A, i32 0, i32 0
  // CHECK64: %3 = load i320, ptr %A1, align 8
  // CHECK64: %loadedv = trunc i320 %3 to i257
  // CHECK64: %storedv = sext i257 %loadedv to i320
  // CHECK64: store i320 %storedv, ptr %[[RET]], align 8
  struct S2 A = {1, 10000};
  return A.A;
}

void TakesVarargs(int i, ...) {
  // CHECK64: define{{.*}} void @TakesVarargs(i32
__builtin_va_list args;
__builtin_va_start(args, i);

_BitInt(160) A = __builtin_va_arg(args, _BitInt(160));
  // CHECK64: %[[ARG:.+]] = load i192
  // CHECK64: %[[TRUNC:.+]] = trunc i192 %[[ARG]] to i160
  // CHECK64: %[[SEXT:.+]] = sext i160 %[[TRUNC]] to i192
  // CHECK64: store i192 %[[SEXT]], ptr %A, align 8
}

_BitInt(129) *f1(_BitInt(129) *p) {
  // CHECK64: getelementptr inbounds [24 x i8], {{.*}} i64 1
  return p + 1;
}

char *f2(char *p) {
  // CHECK64: getelementptr inbounds nuw i8, {{.*}} i64 24
  return p + sizeof(_BitInt(129));
}

auto BigGlob = (_BitInt(257))-1;
// CHECK64: define {{.*}}void @foobar(ptr {{.*}} sret([40 x i8]) align 8 %[[RET1:.+]])
_BitInt(257) foobar() {
  // CHECK64: %A = alloca [40 x i8], align 8
  // CHECK64: %0 = load i320, ptr @BigGlob, align 8
  // CHECK64: %loadedv = trunc i320 %0 to i257
  // CHECK64: %add = add nsw i257 %loadedv, 1
  // CHECK64: %storedv = sext i257 %add to i320
  // CHECK64: store i320 %storedv, ptr %A, align 8
  // CHECK64: %1 = load i320, ptr %A, align 8
  // CHECK64: %loadedv1 = trunc i320 %1 to i257
  // CHECK64: %storedv2 = sext i257 %loadedv1 to i320
  // CHECK64: store i320 %storedv2, ptr %[[RET1]], align 8
  _BitInt(257) A = BigGlob + 1;
  return A;
}

void f() {
  static _BitInt(130) p = {10000};
}

struct S3 {
  _BitInt (136) A : 129;
};

void bitField() {
  struct S3 s = {1};
  struct {
    _BitInt (136) A : 48;
    int a;
  } s1 = {s.A};
  s1.A = 36;
  // LIN64: %s = alloca %struct.S3, align 8
  // LIN64: %s1 = alloca %struct.anon, align 8
  // LIN64: call void @llvm.memcpy.p0.p0.i64(ptr align 8 %s, ptr align 8 @__const.bitField.s, i64 24, i1 false)
  // LIN64: %bf.load = load i136, ptr %s, align 8
  // LIN64: %bf.shl = shl i136 %bf.load, 7
  // LIN64: %bf.ashr = ashr i136 %bf.shl, 7
  // LIN64: %0 = trunc i136 %bf.ashr to i64
  // LIN64: %bf.load1 = load i64, ptr %s1, align 8
  // LIN64: %bf.value = and i64 %0, 281474976710655
  // LIN64: %bf.clear = and i64 %bf.load1, -281474976710656
  // LIN64: %bf.set = or i64 %bf.clear, %bf.value
  // LIN64: store i64 %bf.set, ptr %s1, align 8
  // LIN64: %a = getelementptr inbounds nuw %struct.anon, ptr %s1, i32 0, i32 1
  // LIN64: store i32 0, ptr %a, align 8
  // LIN64: %bf.load2 = load i64, ptr %s1, align 8
  // LIN64: %bf.clear3 = and i64 %bf.load2, -281474976710656
  // LIN64: %bf.set4 = or i64 %bf.clear3, 36
  // LIN64: store i64 %bf.set4, ptr %s1, align 8
}

#endif