Merge remote-tracking branch 'origin/master' into llvm13

Conflicts:

 * cmake/Findclang.cmake
 * cmake/Findlld.cmake
 * cmake/Findllvm.cmake

In master branch, more search paths were added to these files with "12"
in the path. In this commit I updated them to "13".

 * src/stage1/codegen.cpp
 * src/zig_llvm.cpp
 * src/zig_llvm.h

In master branch, ZigLLVMBuildCmpXchg is improved to add
`is_single_threaded`. However, the LLVM 13 C API has this already, and
in the llvm13 branch, ZigLLVMBuildCmpXchg is deleted in favor of the C
API. In this commit I updated stage2 to use the LLVM 13 C API rather
than depending on an improved ZigLLVMBuildCmpXchg.

Additionally, src/target.zig largestAtomicBits needed to be updated to
include the new m68k ISA.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/std/Thread/ResetEvent.zig b/lib/std/Thread/ResetEvent.zig
index d9304dd70b..d85cf7f133 100644
--- a/lib/std/Thread/ResetEvent.zig
+++ b/lib/std/Thread/ResetEvent.zig
@@ -152,7 +152,7 @@ pub const PosixEvent = struct {
     pub fn timedWait(ev: *PosixEvent, timeout_ns: u64) TimedWaitResult {
         var ts: os.timespec = undefined;
         var timeout_abs = timeout_ns;
-        os.clock_gettime(os.CLOCK_REALTIME, &ts) catch return .timed_out;
+        os.clock_gettime(os.CLOCK.REALTIME, &ts) catch return .timed_out;
         timeout_abs += @intCast(u64, ts.tv_sec) * time.ns_per_s;
         timeout_abs += @intCast(u64, ts.tv_nsec);
         ts.tv_sec = @intCast(@TypeOf(ts.tv_sec), @divFloor(timeout_abs, time.ns_per_s));