diff --git a/src/cmd/internal/obj/ppc64/asm9.go b/src/cmd/internal/obj/ppc64/asm9.go
index 1a97dda7..1745409 100644
--- a/src/cmd/internal/obj/ppc64/asm9.go
+++ b/src/cmd/internal/obj/ppc64/asm9.go
@@ -194,40 +194,31 @@
 	{as: AFMUL, a1: C_FREG, a6: C_FREG, type_: 32, size: 4},
 	{as: AFMUL, a1: C_FREG, a2: C_FREG, a6: C_FREG, type_: 32, size: 4},
 
-	{as: AMOVBU, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVBU, a1: C_REG, a6: C_SOREG, type_: 7, size: 4},
 	{as: AMOVBU, a1: C_SOREG, a6: C_REG, type_: 9, size: 8},
 	{as: AMOVBU, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 9, size: 8},
 
-	{as: AMOVBZU, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVBZU, a1: C_REG, a6: C_SOREG, type_: 7, size: 4},
 	{as: AMOVBZU, a1: C_SOREG, a6: C_REG, type_: 8, size: 4},
-	{as: AMOVBZU, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 8, size: 4},
 
-	{as: AMOVHBR, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 44, size: 4},
 	{as: AMOVHBR, a1: C_REG, a6: C_ZOREG, type_: 44, size: 4},
-	{as: AMOVHBR, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 45, size: 4},
 	{as: AMOVHBR, a1: C_ZOREG, a6: C_REG, type_: 45, size: 4},
 
 	{as: AMOVB, a1: C_ADDR, a6: C_REG, type_: 76, size: 12},
 	{as: AMOVB, a1: C_LOREG, a6: C_REG, type_: 37, size: 12},
-	{as: AMOVB, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVB, a1: C_REG, a6: C_ADDR, type_: 74, size: 8},
 	{as: AMOVB, a1: C_REG, a6: C_LOREG, type_: 35, size: 8},
 	{as: AMOVB, a1: C_REG, a6: C_REG, type_: 12, size: 4},
 	{as: AMOVB, a1: C_REG, a6: C_SOREG, type_: 7, size: 4},
 	{as: AMOVB, a1: C_SOREG, a6: C_REG, type_: 9, size: 8},
-	{as: AMOVB, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 9, size: 8},
 
 	{as: AMOVBZ, a1: C_ADDR, a6: C_REG, type_: 75, size: 8},
 	{as: AMOVBZ, a1: C_LOREG, a6: C_REG, type_: 36, size: 8},
-	{as: AMOVBZ, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVBZ, a1: C_REG, a6: C_ADDR, type_: 74, size: 8},
 	{as: AMOVBZ, a1: C_REG, a6: C_LOREG, type_: 35, size: 8},
 	{as: AMOVBZ, a1: C_REG, a6: C_REG, type_: 13, size: 4},
 	{as: AMOVBZ, a1: C_REG, a6: C_SOREG, type_: 7, size: 4},
 	{as: AMOVBZ, a1: C_SOREG, a6: C_REG, type_: 8, size: 4},
-	{as: AMOVBZ, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 8, size: 4},
 
 	{as: AMOVD, a1: C_ADDCON, a6: C_REG, type_: 3, size: 4},
 	{as: AMOVD, a1: C_ADDR, a6: C_REG, type_: 75, size: 8},
@@ -240,7 +231,6 @@
 	{as: AMOVD, a1: C_LOREG, a6: C_REG, type_: 36, size: 8},
 	{as: AMOVD, a1: C_LR, a6: C_REG, type_: 66, size: 4},
 	{as: AMOVD, a1: C_MSR, a6: C_REG, type_: 54, size: 4}, /* mfmsr */
-	{as: AMOVD, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVD, a1: C_REG, a6: C_ADDR, type_: 74, size: 8},
 	{as: AMOVD, a1: C_REG, a6: C_CTR, type_: 66, size: 4},
 	{as: AMOVD, a1: C_REG, a6: C_LOREG, type_: 35, size: 8},
@@ -259,7 +249,6 @@
 	{as: AMOVD, a1: C_TOCADDR, a6: C_REG, type_: 95, size: 8},
 	{as: AMOVD, a1: C_UCON, a6: C_REG, type_: 3, size: 4},
 	{as: AMOVD, a1: C_XER, a6: C_REG, type_: 66, size: 4},
-	{as: AMOVD, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 8, size: 4},
 
 	{as: AMOVW, a1: C_ADDCON, a6: C_REG, type_: 3, size: 4},
 	{as: AMOVW, a1: C_ADDR, a6: C_REG, type_: 75, size: 8},
@@ -269,7 +258,6 @@
 	{as: AMOVW, a1: C_LCON, a6: C_REG, type_: 19, size: 8},
 	{as: AMOVW, a1: C_LECON, a6: C_REG, type_: 26, size: 8},
 	{as: AMOVW, a1: C_LOREG, a6: C_REG, type_: 36, size: 8},
-	{as: AMOVW, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVW, a1: C_REG, a6: C_ADDR, type_: 74, size: 8},
 	{as: AMOVW, a1: C_REG, a6: C_CREG, type_: 69, size: 4},
 	{as: AMOVW, a1: C_REG, a6: C_CTR, type_: 66, size: 4},
@@ -284,7 +272,6 @@
 	{as: AMOVW, a1: C_SPR, a6: C_REG, type_: 66, size: 4},
 	{as: AMOVW, a1: C_UCON, a6: C_REG, type_: 3, size: 4},
 	{as: AMOVW, a1: C_XER, a6: C_REG, type_: 66, size: 4},
-	{as: AMOVW, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 8, size: 4},
 
 	{as: AMOVWZ, a1: C_ADDCON, a6: C_REG, type_: 3, size: 4},
 	{as: AMOVWZ, a1: C_ADDR, a6: C_REG, type_: 75, size: 8},
@@ -294,7 +281,6 @@
 	{as: AMOVWZ, a1: C_LCON, a6: C_REG, type_: 19, size: 8},
 	{as: AMOVWZ, a1: C_LECON, a6: C_REG, type_: 26, size: 8},
 	{as: AMOVWZ, a1: C_LOREG, a6: C_REG, type_: 36, size: 8},
-	{as: AMOVWZ, a1: C_REG, a2: C_REG, a6: C_ZOREG, type_: 7, size: 4},
 	{as: AMOVWZ, a1: C_REG, a6: C_ADDR, type_: 74, size: 8},
 	{as: AMOVWZ, a1: C_REG, a6: C_CREG, type_: 69, size: 4},
 	{as: AMOVWZ, a1: C_REG, a6: C_CTR, type_: 66, size: 4},
@@ -310,7 +296,6 @@
 	{as: AMOVWZ, a1: C_SPR, a6: C_REG, type_: 66, size: 4},
 	{as: AMOVWZ, a1: C_UCON, a6: C_REG, type_: 3, size: 4},
 	{as: AMOVWZ, a1: C_XER, a6: C_REG, type_: 66, size: 4},
-	{as: AMOVWZ, a1: C_ZOREG, a2: C_REG, a6: C_REG, type_: 8, size: 4},
 
 	{as: AMOVFL, a1: C_CREG, a6: C_CREG, type_: 67, size: 4},
 	{as: AMOVFL, a1: C_FPSCR, a6: C_CREG, type_: 73, size: 4},
@@ -349,11 +334,8 @@
 	{as: AFMOVD, a1: C_FREG, a6: C_SOREG, type_: 7, size: 4},
 	{as: AFMOVD, a1: C_FREG, a6: C_LOREG, type_: 35, size: 8},
 	{as: AFMOVD, a1: C_FREG, a6: C_ADDR, type_: 74, size: 8},
-	{as: AFMOVSX, a1: C_ZOREG, a2: C_REG, a6: C_FREG, type_: 45, size: 4},
 	{as: AFMOVSX, a1: C_ZOREG, a6: C_FREG, type_: 45, size: 4},
-	{as: AFMOVSX, a1: C_FREG, a2: C_REG, a6: C_ZOREG, type_: 44, size: 4},
 	{as: AFMOVSX, a1: C_FREG, a6: C_ZOREG, type_: 44, size: 4},
-	{as: AFMOVSZ, a1: C_ZOREG, a2: C_REG, a6: C_FREG, type_: 45, size: 4},
 	{as: AFMOVSZ, a1: C_ZOREG, a6: C_FREG, type_: 45, size: 4},
 	{as: ASYNC, type_: 46, size: 4},
 	{as: AWORD, a1: C_LCON, type_: 40, size: 4},