test/AST/ast-dump-constant-expr.cpp

// Test without serialization:
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-unknown -ast-dump -ast-dump-filter Test %s \
// RUN: | FileCheck --strict-whitespace --match-full-lines %s
//
// Test with serialization:
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-unknown -emit-pch -o %t %s
// RUN: %clang_cc1 -x c++ -std=c++20 -triple x86_64-unknown-unknown -include-pch %t \
// RUN: -ast-dump-all -ast-dump-filter Test /dev/null \
// RUN: | sed -e "s/ <undeserialized declarations>//" -e "s/ imported//" \
// RUN: | FileCheck --strict-whitespace --match-full-lines %s

// FIXME: ASTRecordReader::readAPValue and ASTRecordWriter::AddAPValue
// just give up on some APValue kinds! This *really* should be fixed.

struct array_holder {
  int i[2];
};

struct S {
  int i = 42;
};

union U {
  int i = 42;
  float f;
};

struct SU {
  S s[2];
  U u[3];
};

consteval int test_Int() { return 42; }
consteval float test_Float() { return 1.0f; }
consteval _Complex int test_ComplexInt() { return 1+2i; }
consteval _Complex float test_ComplexFloat() { return 1.2f+3.4fi; }
consteval __int128 test_Int128() { return (__int128)0xFFFFFFFFFFFFFFFF + (__int128)1; }
// FIXME: consteval array_holder test_Array() { return array_holder(); }
// FIXME: consteval S test_Struct() { return S(); }
// FIXME: consteval U test_Union() { return U(); }
// FIXME: consteval SU test_SU() { return SU(); }

struct Test {
  void test() {
    (void)test_Int();
    (void)test_Float();
    (void)test_ComplexInt();
    (void)test_ComplexFloat();
    (void)test_Int128();
    //(void) test_Array();
    //(void) test_Struct();
    //(void) test_Union();
    //(void) test_SU();
  }

  consteval void consteval_method() {}
};

// CHECK:Dumping Test:
// CHECK-NEXT:CXXRecordDecl {{.*}} <{{.*}}ast-dump-constant-expr.cpp:43:1, line:57:1> line:43:8 struct Test definition
// CHECK:|-CXXMethodDecl {{.*}} <line:44:3, line:54:3> line:44:8 test 'void ()'
// CHECK-NEXT:| `-CompoundStmt {{.*}} <col:15, line:54:3>
// CHECK-NEXT:|   |-CStyleCastExpr {{.*}} <line:45:5, col:20> 'void' <ToVoid>
// CHECK-NEXT:|   | `-ConstantExpr {{.*}} <col:11, col:20> 'int'
// CHECK-NEXT:|   |   |-value: Int 42
// CHECK-NEXT:|   |   `-CallExpr {{.*}} <col:11, col:20> 'int'
// CHECK-NEXT:|   |     `-ImplicitCastExpr {{.*}} <col:11> 'int (*)()' <FunctionToPointerDecay>
// CHECK-NEXT:|   |       `-DeclRefExpr {{.*}} <col:11> 'int ()' lvalue Function {{.*}} 'test_Int' 'int ()'
// CHECK-NEXT:|   |-CStyleCastExpr {{.*}} <line:46:5, col:22> 'void' <ToVoid>
// CHECK-NEXT:|   | `-ConstantExpr {{.*}} <col:11, col:22> 'float'
// CHECK-NEXT:|   |   |-value: Float 1.000000e+00
// CHECK-NEXT:|   |   `-CallExpr {{.*}} <col:11, col:22> 'float'
// CHECK-NEXT:|   |     `-ImplicitCastExpr {{.*}} <col:11> 'float (*)()' <FunctionToPointerDecay>
// CHECK-NEXT:|   |       `-DeclRefExpr {{.*}} <col:11> 'float ()' lvalue Function {{.*}} 'test_Float' 'float ()'
// CHECK-NEXT:|   |-CStyleCastExpr {{.*}} <line:47:5, col:27> 'void' <ToVoid>
// CHECK-NEXT:|   | `-ConstantExpr {{.*}} <col:11, col:27> '_Complex int'
// CHECK-NEXT:|   |   |-value: ComplexInt 1 + 2i
// CHECK-NEXT:|   |   `-CallExpr {{.*}} <col:11, col:27> '_Complex int'
// CHECK-NEXT:|   |     `-ImplicitCastExpr {{.*}} <col:11> '_Complex int (*)()' <FunctionToPointerDecay>
// CHECK-NEXT:|   |       `-DeclRefExpr {{.*}} <col:11> '_Complex int ()' lvalue Function {{.*}} 'test_ComplexInt' '_Complex int ()'
// CHECK-NEXT:|   |-CStyleCastExpr {{.*}} <line:48:5, col:29> 'void' <ToVoid>
// CHECK-NEXT:|   | `-ConstantExpr {{.*}} <col:11, col:29> '_Complex float'
// CHECK-NEXT:|   |   |-value: ComplexFloat 1.200000e+00 + 3.400000e+00i
// CHECK-NEXT:|   |   `-CallExpr {{.*}} <col:11, col:29> '_Complex float'
// CHECK-NEXT:|   |     `-ImplicitCastExpr {{.*}} <col:11> '_Complex float (*)()' <FunctionToPointerDecay>
// CHECK-NEXT:|   |       `-DeclRefExpr {{.*}} <col:11> '_Complex float ()' lvalue Function {{.*}} 'test_ComplexFloat' '_Complex float ()'
// CHECK-NEXT:|   `-CStyleCastExpr {{.*}} <line:49:5, col:23> 'void' <ToVoid>
// CHECK-NEXT:|     `-ConstantExpr {{.*}} <col:11, col:23> '__int128'
// CHECK-NEXT:|       |-value: Int 18446744073709551616
// CHECK-NEXT:|       `-CallExpr {{.*}} <col:11, col:23> '__int128'
// CHECK-NEXT:|         `-ImplicitCastExpr {{.*}} <col:11> '__int128 (*)()' <FunctionToPointerDecay>
// CHECK-NEXT:|           `-DeclRefExpr {{.*}} <col:11> '__int128 ()' lvalue Function {{.*}} 'test_Int128' '__int128 ()'
// CHECK-NEXT:`-CXXMethodDecl {{.*}} <line:56:3, col:38> col:18 consteval consteval_method 'void ()'