The empty-arguments test fails when run against an older runtime, so don't test it there.
I tried to do this before, but got the condition backwards.
rdar://146839898
(cherry picked from commit b2f1b44b95)
Print diagnostic groups as part of the LLVM printer in the same manner as the
Swift one does, always. Make `-print-diagnostic-groups` an inert option, since we
always print diagnostic group names with the `[#GroupName]` syntax.
As part of this, we no longer render the diagnostic group name as part
of the diagnostic *text*, instead leaving it up to the diagnostic
renderer to handle the category appropriately. Update all of the tests
that were depending on `-print-diagnostic-groups` putting it into the
text to instead use the `{{documentation-file=<file name>}}`
diagnostic verification syntax.
We've been converging the implementations of educational notes and
diagnostic groups, where both provide category information in
diagnostics (e.g., `[#StrictMemorySafety]`) and corresponding
short-form documentation files. The diagnostic group model is more
useful in a few ways:
* It provides warnings-as-errors control for warnings in the group
* It is easier to associate a diagnostic with a group with
GROUPED_ERROR/GROUPED_WARNING than it is to have a separate diagnostic
ID -> mapping.
* It is easier to see our progress on diagnostic-group coverage
* It provides an easy name to use for diagnostic purposes.
Collapse the educational-notes infrastructure into diagnostic groups,
migrating all of the existing educational notes into new groups.
Simplify the code paths that dealt with multiple educational notes to
have a single, possibly-missing "category documentation URL", which is
how we're treating this.
Explicitly skip `expectCrashLater()` tests for WASI, instead of conditionally excluding them from compilation.
In doing so, restored some tests that were wrongly excluded from the WASI tests suite.
Expand alignedStorageForEmptyVaLists to eight Doubles. This produces more predictable output for code that calls a variadic function without parameters where the function still expects them, such as passing an arbitary string to a string formatting function. It's still unsound, but this makes it more predictable.
rdar://145083971
