[PATCH] D150856: [lit] Add %{for-each-file} substitution

[Aaron Ballman via Phabricator via llvm-commits]

aaron.ballman added a comment.

In D150856#4428635 <https://reviews.llvm.org/D150856#4428635>, @jdenny wrote:

> In D150856#4428523 <https://reviews.llvm.org/D150856#4428523>, @Endill wrote:
>
>> We're also can't chain compiler invocations via `&&`: `RUN: %{run98} && %{run11} && %{run14} && %{run17} && %{run20} && %{run23}`, because having dedicated stdout log per each language mode makes DR test debugging workflow much better.
>
> Can you explain that a bit more or point to a reference?  I find lit -vv makes it pretty easy to understand what commands are executed and what output goes with each.

Using `&&` means that an earlier process failure (nonzero return) causes later commands to not be run at all, right?


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https://reviews.llvm.org/D150856