diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index f2100e11ca4..fce25c9598b 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -347,3 +347,13 @@ def : Pat<(extloadi8 IntRegs:$addr),
           (LDRB IntRegs:$addr)>;
 def : Pat<(extloadi16 IntRegs:$addr),
           (LDRH IntRegs:$addr)>;
+
+// zextload bool -> zextload byte
+def : Pat<(i32 (zextloadi1 IntRegs:$addr)), (LDRB IntRegs:$addr)>;
+def : Pat<(i32 (zextloadi1 IntRegs:$addr)), (LDRB IntRegs:$addr)>;
+
+// truncstore bool -> truncstore byte.
+def : Pat<(truncstorei1 IntRegs:$src, IntRegs:$addr),
+          (STRB IntRegs:$addr, IntRegs:$src)>;
+def : Pat<(truncstorei1 IntRegs:$src, IntRegs:$addr),
+          (STRB IntRegs:$addr, IntRegs:$src)>;