[PATCH] D136423: [clang][Interp] Implement inc/dec postfix and prefix operators

[Timm Bäder via Phabricator via cfe-commits]

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This only works on integrals for now.

Add four new opcodes, `Inc`, `IncPop`, `Dec` and `DecPop`. The `*Pop` variants don't leave anything on the stack and exist because the common case is that the result is unused.

There are still a few corner cases left like floating values, pointers, and over/underflow handling.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D136423

Files:
  clang/lib/AST/Interp/ByteCodeExprGen.cpp
  clang/lib/AST/Interp/Interp.h
  clang/lib/AST/Interp/Opcodes.td
  clang/test/AST/Interp/arrays.cpp
  clang/test/AST/Interp/literals.cpp

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