[llvm] r200937 - Revert r200095 and r200152. It turns out when compiling with -arch armv7 -mcpu=cortex-m3, the triple would still set iOS as the OS so the hack is still needed. rdar://15984891

[Evan Cheng]

Author: evancheng
Date: Thu Feb  6 12:51:34 2014
New Revision: 200937

URL: http://llvm.org/viewvc/llvm-project?rev=200937&view=rev
Log:
Revert r200095 and r200152. It turns out when compiling with -arch armv7 -mcpu=cortex-m3, the triple would still set iOS as the OS so the hack is still needed. rdar://15984891

Modified:
    llvm/trunk/lib/Target/ARM/ARMBaseRegisterInfo.cpp

Modified: llvm/trunk/lib/Target/ARM/ARMBaseRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMBaseRegisterInfo.cpp?rev=200937&r1=200936&r2=200937&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMBaseRegisterInfo.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMBaseRegisterInfo.cpp Thu Feb  6 12:51:34 2014
@@ -51,7 +51,7 @@ ARMBaseRegisterInfo::ARMBaseRegisterInfo
 
 const uint16_t*
 ARMBaseRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
-  const uint16_t *RegList = STI.isTargetIOS()
+  const uint16_t *RegList = (STI.isTargetIOS() && !STI.isAAPCS_ABI())
                                 ? CSR_iOS_SaveList
                                 : CSR_AAPCS_SaveList;
 
@@ -86,7 +86,8 @@ ARMBaseRegisterInfo::getCallPreservedMas
   if (CC == CallingConv::GHC)
     // This is academic becase all GHC calls are (supposed to be) tail calls
     return CSR_NoRegs_RegMask;
-  return STI.isTargetIOS() ? CSR_iOS_RegMask : CSR_AAPCS_RegMask;
+  return (STI.isTargetIOS() && !STI.isAAPCS_ABI())
+    ? CSR_iOS_RegMask : CSR_AAPCS_RegMask;
 }
 
 const uint32_t*
@@ -107,7 +108,7 @@ ARMBaseRegisterInfo::getThisReturnPreser
   if (CC == CallingConv::GHC)
     // This is academic becase all GHC calls are (supposed to be) tail calls
     return NULL;
-  return STI.isTargetIOS()
+  return (STI.isTargetIOS() && !STI.isAAPCS_ABI())
     ? CSR_iOS_ThisReturn_RegMask : CSR_AAPCS_ThisReturn_RegMask;
 }