[memprof] Disallow memprof profile reader tests on non-x86 archs.
The memprof profile reader tests rely on binary data which is generated
from and meant to be interpreted on little endian architectures. Add a
REQUIRES: x86_64-linux clause to both tests to ensure they don't fail on big
endian targets such as ppc.
diff --git a/llvm/test/tools/llvm-profdata/memprof-basic.test b/llvm/test/tools/llvm-profdata/memprof-basic.test
index b9f624d..1ef7c71 100644
--- a/llvm/test/tools/llvm-profdata/memprof-basic.test
+++ b/llvm/test/tools/llvm-profdata/memprof-basic.test
@@ -1,3 +1,5 @@
+REQUIRES: x86_64-linux
+
The input raw profile test has been generated from the following source code:
```
diff --git a/llvm/test/tools/llvm-profdata/memprof-multi.test b/llvm/test/tools/llvm-profdata/memprof-multi.test
index d27612b..f143955 100644
--- a/llvm/test/tools/llvm-profdata/memprof-multi.test
+++ b/llvm/test/tools/llvm-profdata/memprof-multi.test
@@ -1,3 +1,5 @@
+REQUIRES: x86_64-linux
+
The input raw profile test has been generated from the following source code:
```
