[llvm] r207718 - Prepare support of Itanium ABI on ARM as opposed to EHABI by

[Joerg Sonnenberger]

Author: joerg
Date: Wed Apr 30 17:43:13 2014
New Revision: 207718

URL: http://llvm.org/viewvc/llvm-project?rev=207718&view=rev
Log:
Prepare support of Itanium ABI on ARM as opposed to EHABI by
conditionally emitting .fnstart and friends only for EHABI.

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/ARMException.cpp
    llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/ARMException.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/ARMException.cpp?rev=207718&r1=207717&r2=207718&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/ARMException.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/ARMException.cpp Wed Apr 30 17:43:13 2014
@@ -57,7 +57,8 @@ void ARMException::endModule() {
 /// beginFunction - Gather pre-function exception information. Assumes it's
 /// being emitted immediately after the function entry point.
 void ARMException::beginFunction(const MachineFunction *MF) {
-  getTargetStreamer().emitFnStart();
+  if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+    getTargetStreamer().emitFnStart();
   if (Asm->MF->getFunction()->needsUnwindTableEntry())
     Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
                                                   Asm->getFunctionNumber()));
@@ -104,7 +105,8 @@ void ARMException::endFunction(const Mac
     }
   }
 
-  ATS.emitFnEnd();
+  if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+    ATS.emitFnEnd();
 }
 
 void ARMException::EmitTypeInfos(unsigned TTypeEncoding) {

Modified: llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp?rev=207718&r1=207717&r2=207718&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMAsmPrinter.cpp Wed Apr 30 17:43:13 2014
@@ -993,7 +993,8 @@ void ARMAsmPrinter::EmitUnwindingInstruc
       RegList.push_back(SrcReg);
       break;
     }
-    ATS.emitRegSave(RegList, Opc == ARM::VSTMDDB_UPD);
+    if (MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+      ATS.emitRegSave(RegList, Opc == ARM::VSTMDDB_UPD);
   } else {
     // Changes of stack / frame pointer.
     if (SrcReg == ARM::SP) {
@@ -1038,18 +1039,20 @@ void ARMAsmPrinter::EmitUnwindingInstruc
       }
       }
 
-      if (DstReg == FramePtr && FramePtr != ARM::SP)
-        // Set-up of the frame pointer. Positive values correspond to "add"
-        // instruction.
-        ATS.emitSetFP(FramePtr, ARM::SP, -Offset);
-      else if (DstReg == ARM::SP) {
-        // Change of SP by an offset. Positive values correspond to "sub"
-        // instruction.
-        ATS.emitPad(Offset);
-      } else {
-        // Move of SP to a register.  Positive values correspond to an "add"
-        // instruction.
-        ATS.emitMovSP(DstReg, -Offset);
+      if (MAI->getExceptionHandlingType() == ExceptionHandling::ARM) {
+        if (DstReg == FramePtr && FramePtr != ARM::SP)
+          // Set-up of the frame pointer. Positive values correspond to "add"
+          // instruction.
+          ATS.emitSetFP(FramePtr, ARM::SP, -Offset);
+        else if (DstReg == ARM::SP) {
+          // Change of SP by an offset. Positive values correspond to "sub"
+          // instruction.
+          ATS.emitPad(Offset);
+        } else {
+          // Move of SP to a register.  Positive values correspond to an "add"
+          // instruction.
+          ATS.emitMovSP(DstReg, -Offset);
+        }
       }
     } else if (DstReg == ARM::SP) {
       MI->dump();