Implement a bastardized ABI.

llvm-svn: 155686

3 files changed, 5 insertions, 4 deletions

diff --git a/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
index 9442e4bb712..bc53a2b2826 100644
--- a/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
+++ b/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
@@ -62,12 +62,14 @@ ARMBaseRegisterInfo::ARMBaseRegisterInfo(const ARMBaseInstrInfo &tii,
 
 const uint16_t*
 ARMBaseRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
-  return (STI.isTargetIOS()) ? CSR_iOS_SaveList : CSR_AAPCS_SaveList;
+  return (STI.isTargetIOS() && !STI.isAAPCS_ABI())
+    ? CSR_iOS_SaveList : CSR_AAPCS_SaveList;
 }
 
 const uint32_t*
 ARMBaseRegisterInfo::getCallPreservedMask(CallingConv::ID) const {
-  return (STI.isTargetIOS()) ? CSR_iOS_RegMask : CSR_AAPCS_RegMask;
+  return (STI.isTargetIOS() && !STI.isAAPCS_ABI())
+    ? CSR_iOS_RegMask : CSR_AAPCS_RegMask;
 }
 
 BitVector ARMBaseRegisterInfo::
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index 25e611bee49..ac568b1a08a 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -103,7 +103,7 @@ ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &CPU,
   // After parsing Itineraries, set ItinData.IssueWidth.
   computeIssueWidth();
 
-  if (TT.find("eabi") != std::string::npos)
+  if ((TT.find("eabi") != std::string::npos) || (isTargetIOS() && isMClass()))
     // FIXME: We might want to separate AAPCS and EABI. Some systems, e.g.
     // Darwin-EABI conforms to AACPS but not the rest of EABI.
     TargetABI = ARM_ABI_AAPCS;
diff --git a/llvm/test/CodeGen/ARM/ldrd.ll b/llvm/test/CodeGen/ARM/ldrd.ll
index 3f8fd75f49f..226519b38aa 100644
--- a/llvm/test/CodeGen/ARM/ldrd.ll
+++ b/llvm/test/CodeGen/ARM/ldrd.ll
@@ -18,7 +18,6 @@ entry:
 
 ; M3: t:
 ; M3-NOT: ldrd
-; M3: ldm.w r2, {r2, r3}
 
 	%0 = load i64** @b, align 4
 	%1 = load i64* %0, align 4