Fix thumb2 jump relocation test

Enable return address stack feature
Use DwarfCFI only for NaCl

BUG= http://code.google.com/p/nativeclient/issues/detail?id=3124
TEST=thumb_jump24_fixup.ll

Review URL: https://codereview.chromium.org/11360241

4 files changed, 11 insertions, 7 deletions

diff --git a/lib/Target/ARM/ARM.td b/lib/Target/ARM/ARM.td
index 00bf1b85ec..5c56b2dc47 100644
--- a/lib/Target/ARM/ARM.td
+++ b/lib/Target/ARM/ARM.td
@@ -222,8 +222,9 @@ def : Processor<"arm1156t2f-s",     ARMV6Itineraries, [HasV6T2Ops, FeatureVFP2,
 def : ProcessorModel<"cortex-a8",   CortexA8Model,
 // @LOCALMOD-BEGIN
 // TODO(pdox): Resolve this mismatch.
-                                    [ProcA8, HasV7Ops, FeatureDB]>;
-// FeatureNEON, FeatureDSPThumb2, FeatureHasRAS]>;
+                                    [ProcA8, HasV7Ops, FeatureDB,
+// FeatureNEON,
+                                     FeatureDSPThumb2, FeatureHasRAS]>;
 // @LOCALMOD-END
 
 def : ProcessorModel<"cortex-a9",   CortexA9Model,
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
index b94f963507..c1aab9c72c 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
@@ -57,9 +57,4 @@ ARMELFMCAsmInfo::ARMELFMCAsmInfo() {
   // Exceptions handling
   if (EnableARMEHABI)
     ExceptionsType = ExceptionHandling::ARM;
-
-  // @LOCALMOD-BEGIN
-  // Exceptions handling
-  ExceptionsType = ExceptionHandling::DwarfCFI;
-  // @LOCALMOD-END
 }
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
index f0b289c6f3..059ee99f1c 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
@@ -28,6 +28,12 @@ namespace llvm {
     virtual void anchor();
   public:
     explicit ARMELFMCAsmInfo();
+    // @LOCALMOD-BEGIN
+    // Exceptions handling
+    void setExceptionsType(ExceptionHandling::ExceptionsType ExType) {
+       ExceptionsType = ExType;
+    }
+    // @LOCALMOD-END
   };
 
 } // namespace llvm
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index d6ce86c736..7a57e40a17 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -163,6 +163,8 @@ static MCAsmInfo *createARMMCAsmInfo(const Target &T, StringRef TT) {
   // @LOCALMOD-BEGIN
   ARMELFMCAsmInfo *MAI = new ARMELFMCAsmInfo();
   if (TheTriple.getOS() == Triple::NativeClient) {
+    // NativeClient uses Dwarf exception handling
+    MAI->setExceptionsType(ExceptionHandling::DwarfCFI);
     // Initial state of the frame ARM:SP points to cfa
     MachineLocation Dst(MachineLocation::VirtualFP);
     MachineLocation Src(ARM::SP, 0);