Temporary XFAILs for Hexagon

[rfoos]

Summary

Temporary XFAIL's until patches done.

[rfoos]

Not sure who approves/cares about minor updates to clang tests.

[colinl]

LGTM

test/CodeGen/atomic_ops.c

+// XFAIL: hexagon
 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
 // RUN: %clang_cc1 -triple mips-linux-gnu -emit-llvm %s -o - | FileCheck %s
 
 void foo(int x)
 {
   _Atomic(int) i = 0;
   _Atomic(short) j = 0;
   // Check that multiply / divides on atomics produce a cmpxchg loop

test/CodeGenCXX/crash.cpp

+// XFAIL: hexagon
 // RUN: %clang_cc1 %s -std=c++11 -emit-llvm-only
 // RUN: %clang_cc1 -emit-obj -o %t -gline-tables-only -std=c++11 %s
 // CHECK that we don't crash.
 
 // PR11676's example is ill-formed:
 /*
 union _XEvent {
 };

test/Modules/warn-unused-local-typedef.cpp

+// XFAIL: hexagon
 // RUN: rm -rf %t
 // RUN: %clang -Wunused-local-typedef -c -x objective-c++ -fcxx-modules -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -o /dev/null 2>&1 | FileCheck %s -check-prefix=CHECK_1
 // RUN: %clang -Wunused-local-typedef -c -x objective-c++ -fcxx-modules -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -o /dev/null 2>&1 | FileCheck %s -check-prefix=CHECK_2 -allow-empty
 
 // For modules, the warning should only fire the first time, when the module is
 // built.
 // CHECK_1: warning: unused typedef
 // CHECK_2-NOT: warning: unused typedef
 @import warn_unused_local_typedef;

test/SemaCXX/warn-unused-local-typedef-serialize.cpp

+// XFAIL: hexagon
 // RUN: %clang -x c++-header -c -Wunused-local-typedef %s -o %t.gch -Werror
 // RUN: %clang -DBE_THE_SOURCE -c -Wunused-local-typedef -include %t %s -o /dev/null 2>&1 | FileCheck %s
 // RUN: %clang -DBE_THE_SOURCE -c -Wunused-local-typedef -include %t %s -o /dev/null 2>&1 | FileCheck %s
 
 #ifndef BE_THE_SOURCE
 inline void myfun() {
 // The warning should fire every time the pch file is used, not when it's built.
 // CHECK: warning: unused typedef
   typedef int a;
 }
 #endif