[AARCH64] Enable AARCH64 lit tests on windows dev machines

As discussed on PR27654, this patch fixes the triples of a lot of aarch64 tests and enables lit tests on windows

This will hopefully help stop cases where windows developers break the aarch64 target

Differential Revision: https://reviews.llvm.org/D22191

llvm-svn: 275973
diff --git a/llvm/test/CodeGen/AArch64/arm64-dead-def-frame-index.ll b/llvm/test/CodeGen/AArch64/arm64-dead-def-frame-index.ll
index 9bb4b71..0be3fb1 100644
--- a/llvm/test/CodeGen/AArch64/arm64-dead-def-frame-index.ll
+++ b/llvm/test/CodeGen/AArch64/arm64-dead-def-frame-index.ll
@@ -1,7 +1,6 @@
-; RUN: llc -march=arm64 < %s | FileCheck %s
+; RUN: llc < %s -mtriple=arm64-apple-ios7.0.0 | FileCheck %s
 
 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
-target triple = "arm64-apple-ios7.0.0"
 
 ; Function Attrs: nounwind ssp uwtable
 define i32 @test1() #0 {