[all-commits] [llvm/llvm-project] 1296d2: [Driver] Support -mcmodel= for LoongArch (#72514)

[Lu Weining via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1296d20adfb0978afe38d67efab9818079d870ca
      https://github.com/llvm/llvm-project/commit/1296d20adfb0978afe38d67efab9818079d870ca
  Author: Lu Weining <luweining at loongson.cn>
  Date:   2023-11-30 (Thu, 30 Nov 2023)

  Changed paths:
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/Driver/mcmodel.c

  Log Message:
  -----------
  [Driver] Support -mcmodel= for LoongArch (#72514)

7e42545 rejects unsupported mcmodel options, but normal/medium/extreme
should be supported models for LoongArch according to [gcc
document](https://gcc.gnu.org/onlinedocs/gcc/LoongArch-Options.html).

The mappings among `gcc`, `clang driver`, `clang cc1` and `LLVM (i.e.
llc --code-model=)` are:

|     gcc      |  clang driver |  clang cc1   |    LLVM    |
| -------------  | ------------------ | ----------------- | -------------- |
| normal    |      normal     |   small        |    small    |
| medium  |     medium     |   medium    |    medium |
| extreme  |     extreme     |  large         |     large     |

Link: https://reviews.llvm.org/D150522