Add Apple embedded tests

also add a few more non-apple embedded tests and make isARMBareMetal slightly
more elegant

Author: stuij

clang/lib/Driver/ToolChains/BareMetal.cpp

@@ -133,10 +133,11 @@ namespace driver {
 namespace toolchains {
 /// Is the triple {arm,armeb,thumb,thumbeb}-none-none-{eabi,eabihf} ?
 bool isARMBareMetal(const llvm::Triple &Triple) {
-  if (Triple.getArch() != llvm::Triple::arm &&
-      Triple.getArch() != llvm::Triple::thumb &&
-      Triple.getArch() != llvm::Triple::armeb &&
-      Triple.getArch() != llvm::Triple::thumbeb)
+  auto arch = Triple.getArch();
+  if (arch != llvm::Triple::arm &&
+      arch != llvm::Triple::thumb &&
+      arch != llvm::Triple::armeb &&
+      arch != llvm::Triple::thumbeb)
     return false;
 
   if (Triple.getVendor() != llvm::Triple::UnknownVendor)

clang/test/Driver/frame-pointer-elim.c

@@ -180,6 +180,30 @@
 // RUN:   FileCheck --check-prefix=KEEP-ALL %s
 // RUN: %clang -### --target=arm-arm-none-eabihf -S -O1 -fno-omit-frame-pointer %s 2>&1 | \
 // RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=armeb-arm-none-eabi -S %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-NONE %s
+// RUN: %clang -### --target=thumb-arm-none-eabi -S %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-NONE %s
+// RUN: %clang -### --target=thumbeb-arm-none-eabi -S %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-NONE %s
+
+// Check that for Apple bare metal targets, we're keeping frame pointers by default
+// RUN: %clang -### --target=thumbv6m-apple-none-macho -S %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=thumbv6m-apple-none-macho -S -fno-omit-frame-pointer %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=arm-apple-none-macho -S %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=arm-apple-none-macho -S -fno-omit-frame-pointer %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=thumbv6m-apple-none-macho -S -O1 %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=thumbv6m-apple-none-macho -S -O1 -fno-omit-frame-pointer %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=arm-apple-none-macho -S -O1 %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
+// RUN: %clang -### --target=arm-apple-none-macho -S -O1 -fno-omit-frame-pointer %s 2>&1 | \
+// RUN:   FileCheck --check-prefix=KEEP-ALL %s
 
 // AArch64 bare metal targets behave like hosted targets
 // RUN: %clang -### --target=aarch64-none-elf -S %s 2>&1 |  \