Prevent Thumb code from generating ARM instructions

llvm-svn: 36518
diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td
index 22665e7..4293d1a 100644
--- a/llvm/lib/Target/ARM/ARMInstrInfo.td
+++ b/llvm/lib/Target/ARM/ARMInstrInfo.td
@@ -1124,11 +1124,11 @@
 def : ARMPat<(extloadi16 addrmode3:$addr),  (LDRH addrmode3:$addr)>;
 
 // truncstore i1 -> truncstore i8
-def : Pat<(truncstorei1 GPR:$src, addrmode2:$dst), 
+def : ARMPat<(truncstorei1 GPR:$src, addrmode2:$dst), 
           (STRB GPR:$src, addrmode2:$dst)>;
-def : Pat<(pre_truncsti1 GPR:$src, GPR:$base, am2offset:$offset), 
+def : ARMPat<(pre_truncsti1 GPR:$src, GPR:$base, am2offset:$offset), 
           (STRB_PRE GPR:$src, GPR:$base, am2offset:$offset)>;
-def : Pat<(post_truncsti1 GPR:$src, GPR:$base, am2offset:$offset), 
+def : ARMPat<(post_truncsti1 GPR:$src, GPR:$base, am2offset:$offset), 
           (STRB_POST GPR:$src, GPR:$base, am2offset:$offset)>;
 
 // smul* and smla*