Add a special ARM trap encoding for NaCl.
More details in this thread: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130128/163783.html
Patch by JF Bastien
llvm-svn: 173943
diff --git a/llvm/lib/Target/ARM/ARM.td b/llvm/lib/Target/ARM/ARM.td
index a76715a..46915ee 100644
--- a/llvm/lib/Target/ARM/ARM.td
+++ b/llvm/lib/Target/ARM/ARM.td
@@ -110,6 +110,11 @@
def FeatureMClass : SubtargetFeature<"mclass", "IsMClass", "true",
"Is microcontroller profile ('M' series)">;
+// Special TRAP encoding for NaCl, which looks like a TRAP in Thumb too.
+// See ARMInstrInfo.td for details.
+def FeatureNaClTrap : SubtargetFeature<"nacl-trap", "UseNaClTrap", "true",
+ "NaCl trap">;
+
// ARM ISAs.
def HasV4TOps : SubtargetFeature<"v4t", "HasV4TOps", "true",
"Support ARM v4T instructions">;