Index: llvm/trunk/lib/Target/PowerPC/PPCInstrAltivec.td
===================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCInstrAltivec.td
+++ llvm/trunk/lib/Target/PowerPC/PPCInstrAltivec.td
@@ -853,6 +853,7 @@
 
 // Extended mnemonics
 def : InstAlias<"vmr $vD, $vA", (VOR vrrc:$vD, vrrc:$vA, vrrc:$vA)>;
+def : InstAlias<"vnot $vD, $vA", (VNOR vrrc:$vD, vrrc:$vA, vrrc:$vA)>;
 
 // Loads.
 def : Pat<(v4i32 (load xoaddr:$src)), (LVX xoaddr:$src)>;
Index: llvm/trunk/test/CodeGen/PowerPC/vec_cmp.ll
===================================================================
--- llvm/trunk/test/CodeGen/PowerPC/vec_cmp.ll
+++ llvm/trunk/test/CodeGen/PowerPC/vec_cmp.ll
@@ -54,7 +54,7 @@
 }
 ; CHECK-LABEL:     v16si8_cmp_ne:
 ; CHECK:     vcmpequb [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <16 x i8> @v16si8_cmp_le(<16 x i8> %x, <16 x i8> %y) nounwind readnone {
 entry:
@@ -64,7 +64,7 @@
 }
 ; CHECK-LABEL:      v16si8_cmp_le:
 ; CHECK:      vcmpgtsb [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <16 x i8> @v16ui8_cmp_le(<16 x i8> %x, <16 x i8> %y) nounwind readnone {
 entry:
@@ -74,7 +74,7 @@
 }
 ; CHECK-LABEL:      v16ui8_cmp_le:
 ; CHECK:      vcmpgtub [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <16 x i8> @v16si8_cmp_lt(<16 x i8> %x, <16 x i8> %y) nounwind readnone {
 entry:
@@ -120,7 +120,7 @@
 }
 ; CHECK-LABEL:      v16si8_cmp_ge:
 ; CHECK:      vcmpgtsb [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <16 x i8> @v16ui8_cmp_ge(<16 x i8> %x, <16 x i8> %y) nounwind readnone {
 entry:
@@ -130,7 +130,7 @@
 }
 ; CHECK-LABEL:      v16ui8_cmp_ge:
 ; CHECK:      vcmpgtub [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 
 define <32 x i8> @v32si8_cmp(<32 x i8> %x, <32 x i8> %y) nounwind readnone {
@@ -180,7 +180,7 @@
 }
 ; CHECK-LABEL:      v8si16_cmp_ne:
 ; CHECK:      vcmpequh [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <8 x i16> @v8si16_cmp_le(<8 x i16> %x, <8 x i16> %y) nounwind readnone {
 entry:
@@ -190,7 +190,7 @@
 }
 ; CHECK-LABEL:      v8si16_cmp_le:
 ; CHECK:      vcmpgtsh [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <8 x i16> @v8ui16_cmp_le(<8 x i16> %x, <8 x i16> %y) nounwind readnone {
 entry:
@@ -200,7 +200,7 @@
 }
 ; CHECK-LABEL:      v8ui16_cmp_le:
 ; CHECK:      vcmpgtuh [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <8 x i16> @v8si16_cmp_lt(<8 x i16> %x, <8 x i16> %y) nounwind readnone {
 entry:
@@ -246,7 +246,7 @@
 }
 ; CHECK-LABEL:      v8si16_cmp_ge:
 ; CHECK:      vcmpgtsh [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <8 x i16> @v8ui16_cmp_ge(<8 x i16> %x, <8 x i16> %y) nounwind readnone {
 entry:
@@ -256,7 +256,7 @@
 }
 ; CHECK-LABEL:      v8ui16_cmp_ge:
 ; CHECK:      vcmpgtuh [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 
 define <16 x i16> @v16si16_cmp(<16 x i16> %x, <16 x i16> %y) nounwind readnone {
@@ -309,7 +309,7 @@
 }
 ; CHECK-LABEL:      v4si32_cmp_ne:
 ; CHECK:      vcmpequw [[RCMP:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RCMP]], [[RCMP]]
+; CHECK-NEXT: vnot     2, [[RCMP]]
 
 define <4 x i32> @v4si32_cmp_le(<4 x i32> %x, <4 x i32> %y) nounwind readnone {
 entry:
@@ -319,7 +319,7 @@
 }
 ; CHECK-LABEL:      v4si32_cmp_le:
 ; CHECK:      vcmpgtsw [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x i32> @v4ui32_cmp_le(<4 x i32> %x, <4 x i32> %y) nounwind readnone {
 entry:
@@ -329,7 +329,7 @@
 }
 ; CHECK-LABEL:      v4ui32_cmp_le:
 ; CHECK:      vcmpgtuw [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x i32> @v4si32_cmp_lt(<4 x i32> %x, <4 x i32> %y) nounwind readnone {
 entry:
@@ -375,7 +375,7 @@
 }
 ; CHECK-LABEL:      v4si32_cmp_ge:
 ; CHECK:      vcmpgtsw [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x i32> @v4ui32_cmp_ge(<4 x i32> %x, <4 x i32> %y) nounwind readnone {
 entry:
@@ -385,7 +385,7 @@
 }
 ; CHECK-LABEL:      v4ui32_cmp_ge:
 ; CHECK:      vcmpgtuw [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 
 define <8 x i32> @v8si32_cmp(<8 x i32> %x, <8 x i32> %y) nounwind readnone {
@@ -458,7 +458,7 @@
 }
 ; CHECK-LABEL:      v4f32_cmp_ne:
 ; CHECK:      vcmpeqfp [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x float> @v4f32_cmp_le(<4 x float> %x, <4 x float> %y) nounwind readnone {
 entry:
@@ -509,7 +509,7 @@
 }
 ; CHECK-LABEL: v4f32_cmp_ule:
 ; CHECK:      vcmpgtfp [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x float> @v4f32_cmp_ult(<4 x float> %x, <4 x float> %y) nounwind readnone {
 entry:
@@ -520,7 +520,7 @@
 }
 ; CHECK-LABEL: v4f32_cmp_ult:
 ; CHECK:      vcmpgefp [[RET:[0-9]+]], 2, 3
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x float> @v4f32_cmp_uge(<4 x float> %x, <4 x float> %y) nounwind readnone {
 entry:
@@ -531,7 +531,7 @@
 }
 ; CHECK-LABEL: v4f32_cmp_uge:
 ; CHECK:      vcmpgtfp [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 define <4 x float> @v4f32_cmp_ugt(<4 x float> %x, <4 x float> %y) nounwind readnone {
 entry:
@@ -542,7 +542,7 @@
 }
 ; CHECK-LABEL: v4f32_cmp_ugt:
 ; CHECK:      vcmpgefp [[RET:[0-9]+]], 3, 2
-; CHECK-NEXT: vnor     2, [[RET]], [[RET]]
+; CHECK-NEXT: vnot     2, [[RET]]
 
 
 define <8 x float> @v8f32_cmp(<8 x float> %x, <8 x float> %y) nounwind readnone {
Index: llvm/trunk/test/MC/PowerPC/ppc64-encoding-vmx.s
===================================================================
--- llvm/trunk/test/MC/PowerPC/ppc64-encoding-vmx.s
+++ llvm/trunk/test/MC/PowerPC/ppc64-encoding-vmx.s
@@ -550,6 +550,9 @@
 # CHECK-BE: vnor 2, 3, 4                    # encoding: [0x10,0x43,0x25,0x04]
 # CHECK-LE: vnor 2, 3, 4                    # encoding: [0x04,0x25,0x43,0x10]
             vnor 2, 3, 4
+# CHECK-BE: vnot 2, 3                       # encoding: [0x10,0x43,0x1d,0x04]
+# CHECK-LE: vnot 2, 3                       # encoding: [0x04,0x1d,0x43,0x10]
+            vnot 2, 3
 # CHECK-BE: vor 2, 3, 4                     # encoding: [0x10,0x43,0x24,0x84]
 # CHECK-LE: vor 2, 3, 4                     # encoding: [0x84,0x24,0x43,0x10]
             vor 2, 3, 4