diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -788,7 +788,7 @@
   else if (LibName == "platform" || LibName == "") {
     ToolChain::RuntimeLibType RtLibType = GetRuntimeLibType(Args);
     if (RtLibType == ToolChain::RLT_CompilerRT) {
-      if (getTriple().isAndroid())
+      if (getTriple().isAndroid() || getTriple().isOSAIX())
         unwindLibType = ToolChain::UNW_CompilerRT;
       else
         unwindLibType = ToolChain::UNW_None;
diff --git a/clang/lib/Driver/ToolChains/AIX.cpp b/clang/lib/Driver/ToolChains/AIX.cpp
--- a/clang/lib/Driver/ToolChains/AIX.cpp
+++ b/clang/lib/Driver/ToolChains/AIX.cpp
@@ -221,6 +221,7 @@
   switch (GetCXXStdlibType(Args)) {
   case ToolChain::CST_Libcxx:
     CmdArgs.push_back("-lc++");
+    CmdArgs.push_back("-lc++abi");
     return;
   case ToolChain::CST_Libstdcxx:
     llvm::report_fatal_error("linking libstdc++ unimplemented on AIX");
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -1444,17 +1444,23 @@
     break;
   }
   case ToolChain::UNW_CompilerRT:
-    if (LGT == LibGccType::StaticLibGcc)
+    if (TC.getTriple().isOSAIX()) {
+      // AIX only has libunwind as a shared library. So do not pass
+      // anything in if -static is specified.
+      if (LGT != LibGccType::StaticLibGcc)
+        CmdArgs.push_back("-lunwind");
+    } else if (LGT == LibGccType::StaticLibGcc) {
       CmdArgs.push_back("-l:libunwind.a");
-    else if (TC.getTriple().isOSCygMing()) {
+    } else if (TC.getTriple().isOSCygMing()) {
       if (LGT == LibGccType::SharedLibGcc)
         CmdArgs.push_back("-l:libunwind.dll.a");
       else
         // Let the linker choose between libunwind.dll.a and libunwind.a
         // depending on what's available, and depending on the -static flag
         CmdArgs.push_back("-lunwind");
-    } else
+    } else {
       CmdArgs.push_back("-l:libunwind.so");
+    }
     break;
   }
 
diff --git a/clang/test/Driver/aix-ld.c b/clang/test/Driver/aix-ld.c
--- a/clang/test/Driver/aix-ld.c
+++ b/clang/test/Driver/aix-ld.c
@@ -18,7 +18,9 @@
 // CHECK-LD32:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-NOT: "-lc++"
+// CHECK-LD32-NOT: "-lc++abi"
 // CHECK-LD32:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32:     "-lunwind"
 // CHECK-LD32-NOT: "-lm"
 // CHECK-LD32:     "-lc"
 
@@ -39,7 +41,9 @@
 // CHECK-LD64:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-NOT: "-lc++"
+// CHECK-LD64-NOT: "-lc++abi"
 // CHECK-LD64:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64:     "-lunwind"
 // CHECK-LD64-NOT: "-lm"
 // CHECK-LD64:     "-lc"
 
@@ -61,7 +65,9 @@
 // CHECK-LD32-PTHREAD:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-PTHREAD:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-PTHREAD-NOT: "-lc++"
+// CHECK-LD32-PTHREAD-NOT: "-lc++abi"
 // CHECK-LD32-PTHREAD:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-PTHREAD:     "-lunwind"
 // CHECK-LD32-PTHREAD:     "-lpthreads"
 // CHECK-LD32-PTHREAD-NOT: "-lm"
 // CHECK-LD32-PTHREAD:     "-lc"
@@ -84,7 +90,9 @@
 // CHECK-LD64-PTHREAD:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-PTHREAD:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-PTHREAD-NOT: "-lc++"
+// CHECK-LD64-PTHREAD-NOT: "-lc++abi"
 // CHECK-LD64-PTHREAD:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-PTHREAD:     "-lunwind"
 // CHECK-LD64-PTHREAD:     "-lpthreads"
 // CHECK-LD64-PTHREAD-NOT: "-lm"
 // CHECK-LD64-PTHREAD:     "-lc"
@@ -107,7 +115,9 @@
 // CHECK-LD32-PROF:     "[[SYSROOT]]/usr/lib{{/|\\\\}}mcrt0.o"
 // CHECK-LD32-PROF:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-PROF-NOT: "-lc++"
+// CHECK-LD32-PROF-NOT: "-lc++abi"
 // CHECK-LD32-PROF:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-PROF:     "-lunwind"
 // CHECK-LD32-PROF-NOT: "-lm"
 // CHECK-LD32-PROF:     "-lc"
 
@@ -129,7 +139,9 @@
 // CHECK-LD64-GPROF:     "[[SYSROOT]]/usr/lib{{/|\\\\}}gcrt0_64.o"
 // CHECK-LD64-GPROF:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-GPROF-NOT: "-lc++"
+// CHECK-LD64-GPROF-NOT: "-lc++abi"
 // CHECK-LD64-GPROF:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-GPROF:     "-lunwind"
 // CHECK-LD64-GPROF-NOT: "-lm"
 // CHECK-LD64-GPROF:     "-lc"
 
@@ -151,7 +163,9 @@
 // CHECK-LD32-STATIC:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-STATIC:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-STATIC-NOT: "-lc++"
+// CHECK-LD32-STATIC-NOT: "-lc++abi"
 // CHECK-LD32-STATIC:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-STATIC-NOT: "-lunwind"
 // CHECK-LD32-STATIC-NOT: "-lm"
 // CHECK-LD32-STATIC:     "-lc"
 
@@ -174,7 +188,9 @@
 // CHECK-LD32-LIBP:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-LIBP:     "-L[[SYSROOT]]/powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-LIBP-NOT: "-lc++"
+// CHECK-LD32-LIBP-NOT: "-lc++abi"
 // CHECK-LD32-LIBP:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-LIBP:     "-lunwind"
 // CHECK-LD32-LIBP-NOT: "-lm"
 // CHECK-LD32-LIBP:     "-lc"
 
@@ -197,7 +213,9 @@
 // CHECK-LD32-NO-STD-LIB-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-NO-STD-LIB-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-NO-STD-LIB-NOT: "-lc++"
+// CHECK-LD32-NO-STD-LIB-NOT: "-lc++abi"
 // CHECK-LD32-NO-STD-LIB-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-NO-STD-LIB-NOT: "-lunwind"
 // CHECK-LD32-NO-STD-LIB-NOT: "-lpthreads"
 // CHECK-LD32-NO-STD-LIB-NOT: "-lm"
 // CHECK-LD32-NO-STD-LIB-NOT: "-lc"
@@ -221,7 +239,9 @@
 // CHECK-LD64-NO-DEFAULT-LIBS:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-NO-DEFAULT-LIBS:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lc++"
+// CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lc++abi"
 // CHECK-LD64-NO-DEFAULT-LIBS-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lunwind"
 // CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lpthreads"
 // CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lm"
 // CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lc"
@@ -246,7 +266,9 @@
 // CHECK-LD32-ARG-ORDER:     "-bnocdtors"
 // CHECK-LD32-ARG-ORDER-NOT: "-bcdtors:all:0:s"
 // CHECK-LD32-ARG-ORDER-NOT: "-lc++"
+// CHECK-LD32-ARG-ORDER-NOT: "-lc++abi"
 // CHECK-LD32-ARG-ORDER:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-ARG-ORDER:     "-lunwind"
 // CHECK-LD32-ARG-ORDER-NOT: "-lm"
 // CHECK-LD32-ARG-ORDER:     "-lc"
 
@@ -270,7 +292,9 @@
 // CHECK-LD32-CXX-ARG-ORDER:     "-bnocdtors"
 // CHECK-LD32-CXX-ARG-ORDER-NOT: "-bcdtors:all:0:s"
 // CHECK-LD32-CXX-ARG-ORDER:     "-lc++"
+// CHECK-LD32-CXX-ARG-ORDER:     "-lc++abi"
 // CHECK-LD32-CXX-ARG-ORDER:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-CXX-ARG-ORDER:     "-lunwind"
 // CHECK-LD32-CXX-ARG-ORDER:     "-lm"
 // CHECK-LD32-CXX-ARG-ORDER:     "-lc"
 
@@ -289,7 +313,9 @@
 // CHECK-LD32-CXX-ARG-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-CXX-ARG-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-CXX-ARG-LCXX:     "-lc++"
+// CHECK-LD32-CXX-ARG-LCXX:     "-lc++abi"
 // CHECK-LD32-CXX-ARG-LCXX:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-CXX-ARG-LCXX:     "-lunwind"
 // CHECK-LD32-CXX-ARG-LCXX:     "-lm"
 // CHECK-LD32-CXX-ARG-LCXX:     "-lc"
 
@@ -308,7 +334,9 @@
 // CHECK-LD64-CXX-ARG-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-CXX-ARG-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-CXX-ARG-LCXX:     "-lc++"
+// CHECK-LD64-CXX-ARG-LCXX:     "-lc++abi"
 // CHECK-LD64-CXX-ARG-LCXX:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-CXX-ARG-LCXX:     "-lunwind"
 // CHECK-LD64-CXX-ARG-LCXX:     "-lm"
 // CHECK-LD64-CXX-ARG-LCXX:     "-lc"
 
@@ -328,7 +356,9 @@
 // CHECK-LD32-NODEFLIB-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-NODEFLIB-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "-lc++"
+// CHECK-LD32-NODEFLIB-LCXX-NOT: "-lc++abi"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-NODEFLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "-lm"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "-lc"
 
@@ -348,7 +378,9 @@
 // CHECK-LD64-NODEFLIB-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-NODEFLIB-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "-lc++"
+// CHECK-LD64-NODEFLIB-LCXX-NOT: "-lc++abi"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-NODEFLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "-lm"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "-lc"
 
@@ -368,7 +400,9 @@
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lc++"
+// CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lc++abi"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lm"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lc"
 
@@ -388,7 +422,9 @@
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "-lc++"
+// CHECK-LD64-NOSTDLIB-LCXX-NOT: "-lc++abi"
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-NOSTDLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "-lm"
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "-lc"
 
@@ -409,7 +445,9 @@
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-NOSTDLIBXX-LCXX-NOT: "-lc++"
+// CHECK-LD32-NOSTDLIBXX-LCXX-NOT: "-lc++abi"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-NOSTDLIBXX-LCXX:     "-lunwind"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-lm"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-lc"
 
@@ -429,7 +467,9 @@
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-NOSTDLIBXX-LCXX-NOT: "-lc++"
+// CHECK-LD64-NOSTDLIBXX-LCXX-NOT: "-lc++abi"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-NOSTDLIBXX-LCXX:     "-lunwind"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-lm"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-lc"
 
@@ -449,7 +489,9 @@
 // CHECK-LD32-NOSTARTFILES-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-NOSTARTFILES-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-lc++"
+// CHECK-LD32-NOSTARTFILES-LCXX:     "-lc++abi"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-NOSTARTFILES-LCXX:     "-lunwind"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-lm"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-lc"
 
@@ -469,7 +511,9 @@
 // CHECK-LD64-NOSTARTFILES-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-NOSTARTFILES-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-lc++"
+// CHECK-LD64-NOSTARTFILES-LCXX:     "-lc++abi"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-NOSTARTFILES-LCXX:     "-lunwind"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-lm"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-lc"
 
@@ -506,7 +550,9 @@
 // CHECK-LD32-SHARED-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0.o"
 // CHECK-LD32-SHARED-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti.o"
 // CHECK-LD32-SHARED:     "-lc++"
+// CHECK-LD32-SHARED:     "-lc++abi"
 // CHECK-LD32-SHARED:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc.a"
+// CHECK-LD32-SHARED:     "-lunwind"
 // CHECK-LD32-SHARED:     "-lm"
 // CHECK-LD32-SHARED:     "-lc"
 
@@ -528,6 +574,8 @@
 // CHECK-LD64-SHARED-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"
 // CHECK-LD64-SHARED-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crti_64.o"
 // CHECK-LD64-SHARED:     "-lc++"
+// CHECK-LD64-SHARED:     "-lc++abi"
 // CHECK-LD64-SHARED:     "[[RESOURCE_DIR]]{{/|\\\\}}lib{{/|\\\\}}aix{{/|\\\\}}libclang_rt.builtins-powerpc64.a"
+// CHECK-LD64-SHARED:     "-lunwind"
 // CHECK-LD64-SHARED:     "-lm"
 // CHECK-LD64-SHARED:     "-lc"