Do not XFAIL test/tools/llvm-cov tests on powerpc64le

All tests in test/tools/llvm-cov fail on big-endian targets and are
supposed to be XFAILed there.  However, including "powerpc64" in the
XFAIL line is now incorrect, since that matches both powerpc64- and
powerpc64le- targets, and the tests pass on the latter.

Update the XFAIL lines to use powerpc64- instead (like mips64-).

llvm-svn: 211172
diff --git a/llvm/test/tools/llvm-cov/copy_block_helper.m b/llvm/test/tools/llvm-cov/copy_block_helper.m
index 1859b88..64973f1 100644
--- a/llvm/test/tools/llvm-cov/copy_block_helper.m
+++ b/llvm/test/tools/llvm-cov/copy_block_helper.m
@@ -29,4 +29,4 @@
 int main(int argc, const char *argv[]) { test(0); }
 
 // llvm-cov doesn't work on big endian yet
-// XFAIL: powerpc64, s390x, mips-, mips64-, sparc
+// XFAIL: powerpc64-, s390x, mips-, mips64-, sparc
diff --git a/llvm/test/tools/llvm-cov/llvm-cov.test b/llvm/test/tools/llvm-cov/llvm-cov.test
index 2345f8d..82d1273 100644
--- a/llvm/test/tools/llvm-cov/llvm-cov.test
+++ b/llvm/test/tools/llvm-cov/llvm-cov.test
@@ -110,4 +110,4 @@
 # Bad function checksum on gcda
 RUN: not llvm-cov test.c -gcda=test_func_checksum_fail.gcda
 
-XFAIL: powerpc64, s390x, mips-, mips64-, sparc
+XFAIL: powerpc64-, s390x, mips-, mips64-, sparc
diff --git a/llvm/test/tools/llvm-cov/range_based_for.cpp b/llvm/test/tools/llvm-cov/range_based_for.cpp
index 61f60f6..3fdb244 100644
--- a/llvm/test/tools/llvm-cov/range_based_for.cpp
+++ b/llvm/test/tools/llvm-cov/range_based_for.cpp
@@ -26,4 +26,4 @@
 }                                        // GCOV: -:    [[@LINE]]:}
 
 // llvm-cov doesn't work on big endian yet
-// XFAIL: powerpc64, s390x, mips-, mips64-, sparc
+// XFAIL: powerpc64-, s390x, mips-, mips64-, sparc