Index: lib/Target/ARM/ARM.td
===================================================================
--- lib/Target/ARM/ARM.td
+++ lib/Target/ARM/ARM.td
@@ -360,8 +360,10 @@
                                                        FeatureDB, FeatureMClass]>;
 
 // V6K Processors.
-def : Processor<"arm1176jz-s",      ARMV6Itineraries, [HasV6KOps]>;
+def : Processor<"arm1176jz-s",      ARMV6Itineraries, [HasV6KOps,
+                                                       FeatureTrustZone]>;
 def : Processor<"arm1176jzf-s",     ARMV6Itineraries, [HasV6KOps, FeatureVFP2,
+                                                       FeatureTrustZone,
                                                        FeatureHasSlowFPVMLx]>;
 def : Processor<"mpcorenovfp",      ARMV6Itineraries, [HasV6KOps]>;
 def : Processor<"mpcore",           ARMV6Itineraries, [HasV6KOps, FeatureVFP2,
Index: lib/Target/ARM/ARMInstrInfo.td
===================================================================
--- lib/Target/ARM/ARMInstrInfo.td
+++ lib/Target/ARM/ARMInstrInfo.td
@@ -2329,6 +2329,7 @@
   let Inst{23-4} = 0b01100000000000000111;
   let Inst{3-0} = opt;
 }
+def : MnemonicAlias<"smi", "smc">;
 
 // Supervisor Call (Software Interrupt)
 let isCall = 1, Uses = [SP] in {
Index: test/MC/ARM/arm-thumb-trustzone.s
===================================================================
--- test/MC/ARM/arm-thumb-trustzone.s
+++ test/MC/ARM/arm-thumb-trustzone.s
@@ -1,5 +1,6 @@
 @ RUN: not llvm-mc -triple=thumbv7-apple-darwin -mcpu=cortex-a8 -show-encoding -mattr=-trustzone < %s | FileCheck %s -check-prefix=NOTZ
 @ RUN: llvm-mc -triple=thumbv7-apple-darwin -mcpu=cortex-a8 -show-encoding -mattr=trustzone < %s | FileCheck %s -check-prefix=TZ
+@ RUN: not llvm-mc -triple=thumbv6kz -mcpu=arm1176jzf-s -show-encoding < %s | FileCheck %s -check-prefix=NOTZ
 
   .syntax unified
   .globl _func
Index: test/MC/ARM/arm-trustzone.s
===================================================================
--- test/MC/ARM/arm-trustzone.s
+++ test/MC/ARM/arm-trustzone.s
@@ -1,5 +1,6 @@
 @ RUN: not llvm-mc -triple=armv7-apple-darwin -mcpu=cortex-a8 -show-encoding -mattr=-trustzone < %s | FileCheck %s -check-prefix=NOTZ
 @ RUN: llvm-mc -triple=armv7-apple-darwin -mcpu=cortex-a8 -show-encoding -mattr=trustzone < %s | FileCheck %s -check-prefix=TZ
+@ RUN: llvm-mc -triple=armv6kz -mcpu=arm1176jz-s -show-encoding < %s | FileCheck %s -check-prefix=TZ
 
   .syntax unified
   .globl _func
@@ -14,7 +15,7 @@
 @------------------------------------------------------------------------------
 @ SMC
 @------------------------------------------------------------------------------
-        smc #0xf
+        smi #0xf                        @ SMI is old (ARMv6KZ) name for SMC
         smceq #0
 
 @ NOTZ-NOT: smc 	#15