[clang][tests] Specify unwindlib in aix-ld tests

[tbaeder]

Summary

Clang can be configured with a different default unwindlib, for example
gcc. In that case, -lunwind will not be present in the output.

Fix this by explicitly specifying libunwind as the unwindlib.

[hubert.reinterpretcast]

LGTM; thanks!

clang/test/Driver/aix-ld.c

 // General tests that ld invocations on AIX targets are sane. Note that we use
 // sysroot to make these tests independent of the host system.
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32 %s
 // CHECK-LD32-NOT: warning:
 // CHECK-LD32:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-NOT: "-bnso"
 // CHECK-LD32:     "-b32"

 // CHECK-LD32-NOT: "-lm"
 // CHECK-LD32:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64 %s
 // CHECK-LD64-NOT: warning:
 // CHECK-LD64:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-NOT: "-bnso"
 // CHECK-LD64:     "-b64"

 // CHECK-LD64:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. Enable POSIX thread support.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -pthread \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-PTHREAD %s
 // CHECK-LD32-PTHREAD-NOT: warning:
 // CHECK-LD32-PTHREAD:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-PTHREAD:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-PTHREAD:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-PTHREAD:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-PTHREAD-NOT: "-bnso"
 // CHECK-LD32-PTHREAD:     "-b32"

 // CHECK-LD32-PTHREAD:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. POSIX thread alias.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -pthreads \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-PTHREAD %s
 // CHECK-LD64-PTHREAD-NOT: warning:
 // CHECK-LD64-PTHREAD:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-PTHREAD:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-PTHREAD:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-PTHREAD:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-PTHREAD-NOT: "-bnso"
 // CHECK-LD64-PTHREAD:     "-b64"

 // CHECK-LD64-PTHREAD:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. Enable profiling.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -p \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-PROF %s
 // CHECK-LD32-PROF-NOT: warning:
 // CHECK-LD32-PROF:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-PROF:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-PROF:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-PROF:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-PROF-NOT: "-bnso"
 // CHECK-LD32-PROF:     "-b32"

 // CHECK-LD32-PROF:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. Enable g-profiling.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -pg \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-GPROF %s
 // CHECK-LD64-GPROF-NOT: warning:
 // CHECK-LD64-GPROF:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-GPROF:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-GPROF:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-GPROF:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-GPROF-NOT: "-bnso"
 // CHECK-LD64-GPROF:     "-b64"

 // CHECK-LD64-GPROF:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. Static linking.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -static \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-STATIC %s
 // CHECK-LD32-STATIC-NOT: warning:
 // CHECK-LD32-STATIC:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-STATIC:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-STATIC:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-STATIC:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-STATIC:     "-bnso"
 // CHECK-LD32-STATIC:     "-b32"

 // CHECK-LD32-STATIC:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. Library search path.
 // RUN: %clang -no-canonical-prefixes %s -### 2>&1 \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -L%S/Inputs/aix_ppc_tree/powerpc-ibm-aix7.1.0.0 \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-LIBP %s
 // CHECK-LD32-LIBP-NOT: warning:
 // CHECK-LD32-LIBP:     {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-LIBP:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-LIBP:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-LIBP:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-LIBP-NOT: "-bnso"
 // CHECK-LD32-LIBP:     "-b32"

 // CHECK-LD64-NO-DEFAULT-LIBS-NOT: "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. 'bcdtors' and argument order.
 // RUN: %clang -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -Wl,-bnocdtors \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-ARG-ORDER %s
 // CHECK-LD32-ARG-ORDER:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-ARG-ORDER:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-ARG-ORDER:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-ARG-ORDER:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-ARG-ORDER-NOT: "-bnso"
 // CHECK-LD32-ARG-ORDER:     "-b32"
 // CHECK-LD32-ARG-ORDER:     "-bpT:0x10000000" "-bpD:0x20000000"

 // CHECK-LD32-ARG-ORDER:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. 'bcdtors' and argument order.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -Wl,-bnocdtors \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-CXX-ARG-ORDER %s
 // CHECK-LD32-CXX-ARG-ORDER:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-CXX-ARG-ORDER:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-CXX-ARG-ORDER:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-CXX-ARG-ORDER:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-CXX-ARG-ORDER-NOT: "-bnso"
 // CHECK-LD32-CXX-ARG-ORDER:     "-b32"
 // CHECK-LD32-CXX-ARG-ORDER:     "-bpT:0x10000000" "-bpD:0x20000000"

 // CHECK-LD32-CXX-ARG-ORDER:     "-lm"
 // CHECK-LD32-CXX-ARG-ORDER:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. lc++ and lc order.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-CXX-ARG-LCXX %s
 // CHECK-LD32-CXX-ARG-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-CXX-ARG-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-CXX-ARG-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-CXX-ARG-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-CXX-ARG-LCXX:     "-b32"
 // CHECK-LD32-CXX-ARG-LCXX:     "-bpT:0x10000000" "-bpD:0x20000000"
 // 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-NOT: "--as-needed"
 // CHECK-LD32-CXX-ARG-LCXX:     "-lunwind"
 // CHECK-LD32-CXX-ARG-LCXX-NOT: "--no-as-needed"
 // CHECK-LD32-CXX-ARG-LCXX:     "-lm"
 // CHECK-LD32-CXX-ARG-LCXX:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. lc++ and lc order.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-CXX-ARG-LCXX %s
 // CHECK-LD64-CXX-ARG-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-CXX-ARG-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-CXX-ARG-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-CXX-ARG-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-CXX-ARG-LCXX:     "-b64"
 // CHECK-LD64-CXX-ARG-LCXX:     "-bpT:0x100000000" "-bpD:0x110000000"
 // 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-NOT: "--as-needed"
 // CHECK-LD64-CXX-ARG-LCXX:     "-lunwind"
 // CHECK-LD64-CXX-ARG-LCXX-NOT: "--no-as-needed"
 // CHECK-LD64-CXX-ARG-LCXX:     "-lm"
 // CHECK-LD64-CXX-ARG-LCXX:     "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. -nodefaultlibs.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nodefaultlibs \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-NODEFLIB-LCXX %s
 // CHECK-LD32-NODEFLIB-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-NODEFLIB-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-NODEFLIB-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-NODEFLIB-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-NODEFLIB-LCXX:     "-b32"
 // CHECK-LD32-NODEFLIB-LCXX:     "-bpT:0x10000000" "-bpD:0x20000000"
 // 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: "--as-needed"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "--no-as-needed"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "-lm"
 // CHECK-LD32-NODEFLIB-LCXX-NOT: "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. -nodefaultlibs.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nodefaultlibs \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-NODEFLIB-LCXX %s
 // CHECK-LD64-NODEFLIB-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-NODEFLIB-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-NODEFLIB-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-NODEFLIB-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-NODEFLIB-LCXX:     "-b64"
 // CHECK-LD64-NODEFLIB-LCXX:     "-bpT:0x100000000" "-bpD:0x110000000"
 // 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: "--as-needed"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "--no-as-needed"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "-lm"
 // CHECK-LD64-NODEFLIB-LCXX-NOT: "-lc"
 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. -nostdlib.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nostdlib \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-NOSTDLIB-LCXX %s
 // CHECK-LD32-NOSTDLIB-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-NOSTDLIB-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-NOSTDLIB-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-NOSTDLIB-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-NOSTDLIB-LCXX:     "-b32"
 // CHECK-LD32-NOSTDLIB-LCXX:     "-bpT:0x10000000" "-bpD:0x20000000"
 // 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: "--as-needed"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lunwind"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "--no-as-needed"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lm"
 // CHECK-LD32-NOSTDLIB-LCXX-NOT: "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. -nostdlib.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nostdlib \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-NOSTDLIB-LCXX %s
 // CHECK-LD64-NOSTDLIB-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-NOSTDLIB-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-NOSTDLIB-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-NOSTDLIB-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-NOSTDLIB-LCXX:     "-b64"
 // CHECK-LD64-NOSTDLIB-LCXX:     "-bpT:0x100000000" "-bpD:0x110000000"
 // CHECK-LD64-NOSTDLIB-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"

 
 // Check powerpc-ibm-aix7.1.0.0, 32-bit. -nostdlib++.
 // Note: crti is still linked for initialization/finalization functionality.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nostdlib++ \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-NOSTDLIBXX-LCXX %s
 // CHECK-LD32-NOSTDLIBXX-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-b32"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-bpT:0x10000000" "-bpD:0x20000000"
 // 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-NOT: "--as-needed"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-lunwind"
 // CHECK-LD32-NOSTDLIBXX-LCXX-NOT: "--no-as-needed"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-lm"
 // CHECK-LD32-NOSTDLIBXX-LCXX:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. -nostdlib++.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nostdlib++ \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-NOSTDLIBXX-LCXX %s
 // CHECK-LD64-NOSTDLIBXX-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-b64"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-bpT:0x100000000" "-bpD:0x110000000"
 // 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-NOT: "--as-needed"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-lunwind"
 // CHECK-LD64-NOSTDLIBXX-LCXX-NOT: "--no-as-needed"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-lm"
 // CHECK-LD64-NOSTDLIBXX-LCXX:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 32-bit. -nostartfiles.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nostartfiles \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-NOSTARTFILES-LCXX %s
 // CHECK-LD32-NOSTARTFILES-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-b32"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-bpT:0x10000000" "-bpD:0x20000000"
 // 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-NOT: "--as-needed"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-lunwind"
 // CHECK-LD32-NOSTARTFILES-LCXX-NOT: "--no-as-needed"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-lm"
 // CHECK-LD32-NOSTARTFILES-LCXX:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. -nostartfiles.
 // RUN: %clangxx -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -nostartfiles \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-NOSTARTFILES-LCXX %s
 // CHECK-LD64-NOSTARTFILES-LCXX:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-b64"
 // CHECK-LD64-NOSTARTFILES-LCXX:     "-bpT:0x100000000" "-bpD:0x110000000"
 // CHECK-LD64-NOSTARTFILES-LCXX-NOT: "[[SYSROOT]]/usr/lib{{/|\\\\}}crt0_64.o"

 // CHECK-LD-LIBSTDCXX: LLVM ERROR: linking libstdc++ unimplemented on AIX
 
 // Check powerpc64-ibm-aix7.1.0.0, 32-bit. -shared.
 // RUN: %clangxx -x c++ -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -shared \
 // RUN:        -target powerpc-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD32-SHARED %s
 // CHECK-LD32-SHARED:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
 // CHECK-LD32-SHARED:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD32-SHARED:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD32-SHARED:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD32-SHARED:     "-bM:SRE"
 // CHECK-LD32-SHARED:     "-bnoentry"
 // CHECK-LD32-SHARED:     "-b32"

 // CHECK-LD32-SHARED:     "-lc"
 
 // Check powerpc64-ibm-aix7.1.0.0, 64-bit. -shared.
 // RUN: %clangxx -x c++ -no-canonical-prefixes %s 2>&1 -### \
 // RUN:        -resource-dir=%S/Inputs/resource_dir \
 // RUN:        -shared \
 // RUN:        -target powerpc64-ibm-aix7.1.0.0 \
 // RUN:        --sysroot %S/Inputs/aix_ppc_tree \
+// RUN:        -unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=CHECK-LD64-SHARED %s
 // CHECK-LD64-SHARED:     {{.*}}clang{{.*}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
 // CHECK-LD64-SHARED:     "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
 // CHECK-LD64-SHARED:     "-isysroot" "[[SYSROOT:[^"]+]]"
 // CHECK-LD64-SHARED:     "{{.*}}ld{{(.exe)?}}"
 // CHECK-LD64-SHARED:     "-bM:SRE"
 // CHECK-LD64-SHARED:     "-bnoentry"
 // CHECK-LD64-SHARED:     "-b64"