[PATCH] D122662: [Clang][CodeGen] Add constant array support for __builtin_dump_sturct, and beautify dump format

[Wang Yihan via Phabricator via cfe-commits]

yihanaa created this revision.
yihanaa added reviewers: erichkeane, aaron.ballman.
yihanaa added projects: LLVM, clang.
Herald added a project: All.
yihanaa requested review of this revision.
Herald added a subscriber: cfe-commits.

1. Add constant array support for __builtin_dump_sturct, the style like lldb

struct:

  struct S {
    int x;
    int y : 4;
    int : 0;
    int b[2][2];
    float f;
    struct T {
      int i;
    } t;
    struct {
      int i;
    } foo;
    struct Bar {
        int x;
        const char *B;
      } bar[2];
  };

output:

  struct S {
      int x = 100
      int y : 4 = 1
      int : 0
      int[2][2] b = [
          [0] = [
              [0] = 1
              [1] = 2
          ]
          [1] = [
              [0] = 3
              [1] = 4
          ]
      ]
      float f = 0.000000
      struct T {
          int i = 2022
      }
      struct S::(unnamed) {
          int i = 4096
      }
      struct Bar[2] bar = [
          [0] = {
              int x = 1024
              const char * B = This is struct Bar[0]
          }
          [1] = {
              int x = 2048
              const char * B = This is struct Bar[1]
          }
      ]
  }

2. beautify dump format, add indent.

for example:
struct:

  struct A {
    int a;
    struct B {
      int b;
      struct C {
        struct D {
          int d;
          union E {
            int x;
            int y;
          } e;
        } d;
        int c;
      } c;
    } b;
  };

Before:

  struct A {
  int a = 0
  struct B {
      int b = 0
  struct C {
  struct D {
              int d = 0
  union E {
                  int x = 0
                  int y = 0
                  }
              }
          int c = 0
          }
      }
  }

After:

  struct A {
      int a = 0
      struct B {
          int b = 0
          struct C {
              struct D {
                  int d = 0
                  union E {
                      int x = 0
                      int y = 0
                  }
              }
              int c = 0
          }
      }
  }

3. Remove anonymous tag locations, powered by 'PrintingPolicy'

struct:

  struct S {
    int a;
    struct /* Anonymous*/ {
      int x;
    } b;
    int c;
  };

Before:

  struct S {
  int a = 0
  struct S::(unnamed at ./builtin_dump_struct.c:20:3) {
      int x = 0
      }
  int c = 0
  }

After:

  struct S {
      int a = 0
      struct S::(unnamed) {
          int x = 0
      }
      int c = 0
  }


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122662

Files:
  clang/docs/LanguageExtensions.rst
  clang/docs/ReleaseNotes.rst
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/test/CodeGen/dump-struct-builtin.c

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