Add/update PIE defaults for OpenBSD.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@299269 91177308-0d34-0410-b5e6-96231b3b80d8

Author: brad0

lib/Driver/ToolChains/CommonArgs.cpp

@@ -737,16 +737,18 @@ tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
   // OpenBSD-specific defaults for PIE
   if (Triple.getOS() == llvm::Triple::OpenBSD) {
     switch (ToolChain.getArch()) {
+    case llvm::Triple::arm:
+    case llvm::Triple::aarch64:
     case llvm::Triple::mips64:
     case llvm::Triple::mips64el:
-    case llvm::Triple::sparcel:
     case llvm::Triple::x86:
     case llvm::Triple::x86_64:
       IsPICLevelTwo = false; // "-fpie"
       break;
 
     case llvm::Triple::ppc:
     case llvm::Triple::sparc:
+    case llvm::Triple::sparcel:
     case llvm::Triple::sparcv9:
       IsPICLevelTwo = true; // "-fPIE"
       break;

test/Driver/pic.c

@@ -227,6 +227,10 @@
 // RUN:   | FileCheck %s --check-prefix=CHECK-PIE1
 // RUN: %clang -c %s -target i386-pc-openbsd -### 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=CHECK-PIE1
+// RUN: %clang -c %s -target aarch64-unknown-openbsd -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-PIE1
+// RUN: %clang -c %s -target arm-unknown-openbsd -### 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=CHECK-PIE1
 // RUN: %clang -c %s -target mips64-unknown-openbsd -### 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=CHECK-PIE1
 // RUN: %clang -c %s -target mips64el-unknown-openbsd -### 2>&1 \