[lld][COFF] Add /discard-section option to discard input sections by name (#189542)
This provides a general mechanism similar to ELF linker scripts'
/DISCARD/ for COFF. Though the intention is to explicitly discard
.llvmbc and .llvmcmd sections. (See discussion in #150897, #188398
for more details.)
kernel: Ignore GCC 12.5's -Winfinite-recursion for stack_guard_panic2().
It's a function that we actually want to recurse infinitely (to force
a kernel stack guard panic).
-Winfinite-recursion was introduced in GCC 12 and is part of -Wall.
Tested-by: aly
[Polly] Assumptions used to derive domain must not be pruned by that domain (#190436)
The code that emits the conditions for whether a statement is executed
by checking whether we are in the statement's domain may apply
assumptions (such as an integer truncation being reversible). Later code
then assumes that these assumptions are only relevent for then the
statement is executed, but actually it is used for determining whether
it is executed.
Break this circular reasoning by introducing an `IsInsideDomain` flag
that can be set when the domain has not been verified yet.
Fixes #190128
Thanks to @thapgua for the bug report
Clamp width to terminal width, also change calculation of end of screen
(it is OK to be outside the screen). Fixes problem reported by Dane
Jensen in GitHub issue 4969.
