llvm-project/clang/test/Import
Bruno Ricci f63e3ea558
[clang] Rework how and when APValues are dumped
Currently APValues are dumped as a single string. This becomes quickly
completely unreadable since APValue is a tree-like structure. Even a simple
example is not pretty:

  struct S { int arr[4]; float f; };
  constexpr S s = { .arr = {1,2}, .f = 3.1415f };
  // Struct  fields: Array: Int: 1, Int: 2, 2 x Int: 0, Float: 3.141500e+00

With this patch this becomes:

  -Struct
   |-field: Array size=4
   | |-elements: Int 1, Int 2
   | `-filler: 2 x Int 0
   `-field: Float 3.141500e+00

Additionally APValues are currently only dumped as part of visiting a
ConstantExpr. This patch also dump the value of the initializer of constexpr
variable declarations:

  constexpr int foo(int a, int b) { return a + b - 42; }
  constexpr int a = 1, b = 2;
  constexpr int c = foo(a, b) > 0 ? foo(a, b) : foo(b, a);
  // VarDecl 0x62100008aec8 <col:3, col:57> col:17 c 'const int' constexpr cinit
  // |-value: Int -39
  // `-ConditionalOperator 0x62100008b4d0 <col:21, col:57> 'int'
  // <snip>

Do the above by moving the dump functions to TextNodeDumper which already has
the machinery to display trees. The cases APValue::LValue, APValue::MemberPointer
and APValue::AddrLabelDiff are left as they were before (unimplemented).

We try to display multiple elements on the same line if they are considered to
be "simple". This is to avoid wasting large amounts of vertical space in an
example like:

  constexpr int arr[8] = {0,1,2,3,4,5,6,7};
  // VarDecl 0x62100008bb78 <col:3, col:42> col:17 arr 'int const[8]' constexpr cinit
  // |-value: Array size=8
  // | |-elements: Int 0, Int 1, Int 2, Int 3
  // | `-elements: Int 4, Int 5, Int 6, Int 7

Differential Revision: https://reviews.llvm.org/D83183

Reviewed By: aaron.ballman
2020-07-06 22:03:08 +01:00
..
array-init-loop-expr
attr
builtin-template
call-expr [clang][AST] TextNodeDumper: dump the operator spelling for overloaded operators. 2020-06-09 15:18:14 +01:00
clang-flags
compound-assign-op
conflicting-struct
conversion-decl
cxx-anon-namespace [ASTImporter] Various source location and range import fixes. 2019-12-05 17:44:13 +01:00
cxx-casts
cxx-default-init-expr
cxx-for-range
cxx-member-pointers
cxx-noexcept-expr
cxx-record-flags
cxx-scalar-value-init
cxx-try-catch
destructor
direct
do-stmt
empty-struct
enum [ASTImporter] Various source location and range import fixes. 2019-12-05 17:44:13 +01:00
error-in-expression
error-in-import
expr-with-cleanups
extern-c-function
for-stmt
forward-declared-objc-class
forward-declared-struct
if-stmt
import-overrides
in-class-initializer
indirect-goto
indirect-struct-member-access
inherited-ctor-init-expr
local-struct
local-struct-use-origins
member-in-struct
missing-import
multiple-forward-declarations
namespace [ASTImporter] Various source location and range import fixes. 2019-12-05 17:44:13 +01:00
objc-arc [CodeGen] Emit destructor calls to destruct compound literals 2020-03-10 14:08:28 -07:00
objc-autoreleasepool
objc-definitions-in-expression
objc-method
objc-param-decl
objc-try-catch
overloaded-function
pack-expansion-expr The type of a reference to a non-type template parameter pack should 2020-06-18 17:52:13 -07:00
struct-and-var Tighten up CHECK lines added in a9f10ebffa to work on ARM. 2019-12-05 18:35:08 -08:00
struct-in-namespace
struct-layout
switch-stmt [clang] Rework how and when APValues are dumped 2020-07-06 22:03:08 +01:00
template
template-specialization [ASTImporter] Various source location and range import fixes. 2019-12-05 17:44:13 +01:00
while-stmt