[PATCH] D37929: [DebugInfo] Add missing DW_OP_deref when an NRVO pointer is spilled

[Reid Kleckner via Phabricator via llvm-commits]

rnk added inline comments.


================
Comment at: llvm/test/DebugInfo/X86/dbg-declare-arg.ll:4
 target triple = "x86_64-apple-macosx10.6.7"
 ; rdar://problem/9321650
 ;
----------------
aprantl wrote:
> According to the radar, the testcase was:
> 
> ```
> class A { public: int x; int y; int z; int o; ~A() { x = 1; }};
> 
> A foo(int i) {
>   int j = 0;
>   if (i == 42) {
>     j = i + 1;
>   };
>   A a;
>   a.x = j;
>   return a;
> }
> ```
> 
> Can you verify that end-to-end, this still works?
> Apparently older versions of the testcase never checked for the expressions so it is hard to tell what it originally was.
I verified this does the right thing now on gdb on Linux.


https://reviews.llvm.org/D37929