[PATCH] D14464: Add discriminators for call instructions that are from the same line and same basic block.

[Paul Robinson via llvm-commits]

probinson added a comment.

In http://reviews.llvm.org/D14464#284332, @dblaikie wrote:

> Even with column info, its insufficient if both calls came from the same
>  macro use:
>
> #define X f(); f()
>  int main() {
>
>   X;
>
> }
>
> Both calls to 'f' will have the same line and column, the location of the X
>  use.


Of course if the column numbers are the same, you need the discriminator. The provided test case did not have that situation, which is why I asked.  You don't want to be chewing up extra space in the line table if you don't need to.


http://reviews.llvm.org/D14464