diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -230,8 +230,8 @@
   if (TT.isOSDarwin())
     return Reloc::DynamicNoPIC;
 
-  // Big Endian PPC is PIC by default.
-  if (TT.getArch() == Triple::ppc64)
+  // Big Endian PPC and AIX default to PIC.
+  if (TT.getArch() == Triple::ppc64 || TT.isOSAIX())
     return Reloc::PIC_;
 
   // Rest are static by default.
diff --git a/llvm/test/CodeGen/PowerPC/aix-pic-default.ll b/llvm/test/CodeGen/PowerPC/aix-pic-default.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/aix-pic-default.ll
@@ -0,0 +1,19 @@
+; RUN: llc -verify-machineinstrs -mcpu=pwr4 -mtriple powerpc-ibm-aix-xcoff < %s | FileCheck %s
+; RUN: llc -verify-machineinstrs -mcpu=pwr4 -mtriple powerpc64-ibm-aix-xcoff < %s | FileCheck --check-prefix=CHECK64 %s
+
+@a = common global i32 0
+@b = constant i32* @a
+
+;CHECK:         .comm   a[RW],4,2
+;CHECK-NEXT:    .csect .data[RW]
+;CHECK-NEXT:    .globl  b
+;CHECK-NEXT:    .align  2
+;CHECK-NEXT: b:
+;CHECK-NEXT:    .long   a
+
+;CHECK64:       .comm   a[RW],4,2
+;CHECK64-NEXT:  .csect .data[RW]
+;CHECK64-NEXT:  .globl  b
+;CHECK64-NEXT:  .align  3
+;CHECK64-NEXT: b:
+;CHECK64-NEXT:  .llong  a