[all-commits] [llvm/llvm-project] 8082a0: [CodeGen] Keep track of decls that were deferred a...

[Jun Zhang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8082a00286380d0dafa05bfe5ddfe6075b9769f9
      https://github.com/llvm/llvm-project/commit/8082a00286380d0dafa05bfe5ddfe6075b9769f9
  Author: Jun Zhang <jun at junz.org>
  Date:   2022-07-13 (Wed, 13 Jul 2022)

  Changed paths:
    M clang/lib/CodeGen/CodeGenModule.cpp
    M clang/lib/CodeGen/CodeGenModule.h
    M clang/test/Interpreter/code-undo.cpp

  Log Message:
  -----------
  [CodeGen] Keep track of decls that were deferred and have been emitted.

This patch adds a new field called EmittedDeferredDecls in CodeGenModule
that keeps track of decls that were deferred and have been emitted.

The intention of this patch is to solve issues in the incremental c++,
we'll lose info of decls that are lazily emitted when we undo their
usage.

See example below:

clang-repl> inline int foo() { return 42;}
clang-repl> int bar = foo();
clang-repl> %undo
clang-repl> int baz = foo();
JIT session error: Symbols not found: [ _Z3foov ]
error: Failed to materialize symbols: { (main, { baz, $.incr_module_2.inits.0,
orc_init_func.incr_module_2 }) }

Signed-off-by: Jun Zhang <jun at junz.org>

Differential Revision: https://reviews.llvm.org/D128782