[all-commits] [llvm/llvm-project] d11998: [clang][ConstExprEmitter] handle ArrayToPointerDec...

[Nick Desaulniers via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d1199808afa5b46dfb6738f123b869d0e2fa050a
      https://github.com/llvm/llvm-project/commit/d1199808afa5b46dfb6738f123b869d0e2fa050a
  Author: Nick Desaulniers <ndesaulniers at google.com>
  Date:   2023-07-25 (Tue, 25 Jul 2023)

  Changed paths:
    M clang/lib/CodeGen/CGExprConstant.cpp

  Log Message:
  -----------
  [clang][ConstExprEmitter] handle ArrayToPointerDecay ImplicitCastExpr of StringLiterals

Consider the following statement:
    const char* foo = "foo";

For the sub-AST:
    `-ImplicitCastExpr <col:19> 'const char *' <NoOp>
      `-ImplicitCastExpr <col:19> 'char *' <ArrayToPointerDecay>
        `-StringLiteral <col:19> 'char[4]' lvalue "foo"

The address of the StringLiteral can be emitted as the Constant.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D156185