diff --git a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp
--- a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp
@@ -2,7 +2,7 @@
 
 // REQUIRES: has_sancovcc
 // UNSUPPORTED: ubsan
-// XFAIL: tsan,darwin
+// XFAIL: tsan,darwin,powerpc64
 // XFAIL: android && asan
 
 // RUN: DIR=%t_workdir
diff --git a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp
--- a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp
@@ -2,7 +2,7 @@
 
 // REQUIRES: has_sancovcc
 // UNSUPPORTED: ubsan,i386-darwin
-// XFAIL: tsan
+// XFAIL: tsan,powerpc64
 // XFAIL: android && asan
 
 // RUN: DIR=%t_workdir