[clang] `-gno-structor-decl-linkage-names` and `-gno-key-instructions` should not enable debug info

[rnk]

In this line, Clang takes all "g group" arguments, and uses the last g group arg to set the debug info level (constructor, standalone, vtable, lines-only, etc). However, -g[no-]key-instructions and -g[no]-structor-decl-linkage-names are in g_Group, so it seems they activate this conditional, when the probably simply should not. I will attempt a straightforward patch to see if the issue goes away.

[rnk]

cc @alexfh @Michael137 cross-ref pr #154142

[llvmbot]

@llvm/issue-subscribers-clang-driver

Author: Reid Kleckner (rnk)

In [this line](https://github.com/llvm/llvm-project/blob/ab897ae2e08646e7c60fb61d71df5616950beb66/clang/lib/Driver/ToolChains/Clang.cpp#L4387), Clang takes all "g group" arguments, and uses the last g group arg to set the debug info level (constructor, standalone, vtable, lines-only, etc). However, `-g[no-]key-instructions` and `-g[no]-structor-decl-linkage-names` are in g_Group, so it seems they activate this conditional, when the probably simply should not. I will attempt a straightforward patch to see if the issue goes away.