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diff --git a/clang/test/Driver/aix-as.c b/clang/test/Driver/aix-as.c
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+++ b/clang/test/Driver/aix-as.c
@@ -0,0 +1,73 @@
+// General tests that as(1) invocations on AIX targets are sane. Note that we
+// only test assembler functionalities in this suite.
+
+// Check powerpc-ibm-aix7.1.0.0, 32-bit.
+// RUN: %clang -no-canonical-prefixes %s -### -c -o %t.o 2>&1 \
+// RUN:         -target powerpc-ibm-aix7.1.0.0 \
+// RUN:   | FileCheck --check-prefix=CHECK-AS32 %s
+// CHECK-AS32-NOT: warning:
+// CHECK-AS32: {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
+// CHECK-AS32: "{{.*}}as{{(.exe)?}}" 
+// CHECK-AS32: "-a32" 
+// CHECK-AS32: "-u" 
+// CHECK-AS32: "-many" 
+
+// Check powerpc64-ibm-aix7.1.0.0, 64-bit.
+// RUN: %clang -no-canonical-prefixes %s -### -c -o %t.o 2>&1 \
+// RUN:         -target powerpc64-ibm-aix7.1.0.0 \
+// RUN:   | FileCheck --check-prefix=CHECK-AS64 %s
+// CHECK-AS64-NOT: warning:
+// CHECK-AS64: {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
+// CHECK-AS64: "{{.*}}as{{(.exe)?}}" 
+// CHECK-AS64: "-a64" 
+// CHECK-AS64: "-u" 
+// CHECK-AS64: "-many"
+
+
+// Check powerpc-ibm-aix7.1.0.0, 32-bit. -Xassembler <arg> option. 
+// RUN: %clang -no-canonical-prefixes %s -### -c -o %t.o 2>&1 \
+// RUN:         -Xassembler -w \
+// RUN:         -target powerpc-ibm-aix7.1.0.0 \
+// RUN:   | FileCheck --check-prefix=CHECK-AS32-Xassembler %s
+// CHECK-AS32-Xassembler-NOT: warning:
+// CHECK-AS32-Xassembler: {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc-ibm-aix7.1.0.0"
+// CHECK-AS32-Xassembler: "{{.*}}as{{(.exe)?}}" 
+// CHECK-AS32-Xassembler: "-a32" 
+// CHECK-AS32-Xassembler: "-u" 
+// CHECK-AS32-Xassembler: "-many"
+// CHECK-AS32-Xassembler: "-w"
+
+// Check powerpc64-ibm-aix7.1.0.0, 64-bit. -Wa,<arg>,<arg> option.
+// RUN: %clang -no-canonical-prefixes %s -### -c -o %t.o 2>&1 \
+// RUN:         -Wa,-v,-w \
+// RUN:         -target powerpc64-ibm-aix7.1.0.0 \
+// RUN:   | FileCheck --check-prefix=CHECK-AS64-Wa %s
+// CHECK-AS64-Wa-NOT: warning:
+// CHECK-AS64-Wa: {{.*}}clang{{(.exe)?}}" "-cc1" "-triple" "powerpc64-ibm-aix7.1.0.0"
+// CHECK-AS64-Wa: "{{.*}}as{{(.exe)?}}" 
+// CHECK-AS64-Wa: "-a64" 
+// CHECK-AS64-Wa: "-u" 
+// CHECK-AS64-Wa: "-many"
+// CHECK-AS64-Wa: "-v"
+// CHECK-AS64-Wa: "-w"
+
+// Check powerpc-ibm-aix7.1.0.0, 32-bit. Multiple input files.
+// RUN: %clang -no-canonical-prefixes -### -c \
+// RUN:         %S/Inputs/aix_ppc_tree/dummy0.s \
+// RUN:         %S/Inputs/aix_ppc_tree/dummy1.s \
+// RUN:         %S/Inputs/aix_ppc_tree/dummy2.s 2>&1 \
+// RUN:         -target powerpc-ibm-aix7.1.0.0 \
+// RUN:   | FileCheck --check-prefix=CHECK-AS32-MultiInput %s
+// CHECK-AS32-MultiInput-NOT: warning:
+// CHECK-AS32-MultiInput: "{{.*}}as{{(.exe)?}}"
+// CHECK-AS32-MultiInput: "-a32"
+// CHECK-AS32-MultiInput: "-u"
+// CHECK-AS32-MultiInput: "-many"
+// CHECK-AS32-MultiInput: "{{.*}}as{{(.exe)?}}"
+// CHECK-AS32-MultiInput: "-a32"
+// CHECK-AS32-MultiInput: "-u"
+// CHECK-AS32-MultiInput: "-many"
+// CHECK-AS32-MultiInput: "{{.*}}as{{(.exe)?}}"
+// CHECK-AS32-MultiInput: "-a32"
+// CHECK-AS32-MultiInput: "-u"
+// CHECK-AS32-MultiInput: "-many"