Fix codemodels.c test case (only test mcmodel-kernel on x86)

A recent commit I made broke aarch64 testing, because "kernel"
apparently is not a valid code-model on aarch64, and one of my tests
tested that. This fixes the problem (hopefully) by adding "-triple
x86_64-unknown-linux-gnu" to the test build with "-mcodel-model
kernel".

Differential Revision: https://reviews.llvm.org/D52383

llvm-svn: 342789

clang/test/CodeGen/codemodels.c

@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -emit-llvm  %s -o - | FileCheck %s -check-prefix=CHECK-NOMODEL
 // RUN: %clang_cc1 -emit-llvm -mcode-model tiny %s -o - | FileCheck %s -check-prefix=CHECK-TINY
 // RUN: %clang_cc1 -emit-llvm -mcode-model small %s -o - | FileCheck %s -check-prefix=CHECK-SMALL
-// RUN: %clang_cc1 -emit-llvm -mcode-model kernel %s -o - | FileCheck %s -check-prefix=CHECK-KERNEL
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -mcode-model kernel %s -o - | FileCheck %s -check-prefix=CHECK-KERNEL
 // RUN: %clang_cc1 -emit-llvm -mcode-model medium %s -o - | FileCheck %s -check-prefix=CHECK-MEDIUM
 // RUN: %clang_cc1 -emit-llvm -mcode-model large %s -o - | FileCheck %s -check-prefix=CHECK-LARGE