cmd/compile: regenerate rewrite rules for amd64

Sometimes, multiple CLs being merged that create rules on the same
opcodes can cause the generated file to differ compared to a new
regeneration. This is caused by the fact that rulegen splits
generated functions in chunks of 10 rules per function (to avoid
creating functions that are too big). If two CLs add rules to
the same function, they might cause a generated function to
have more than 10 rules, even though each CL individually didn't
pass this limit.

Change-Id: Ib641396b7e9028f80ec8718746969d390a9fbba9
Reviewed-on: https://go-review.googlesource.com/95795
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/compile/internal/ssa/rewriteAMD64.go

@@ -316,7 +316,7 @@ func rewriteValueAMD64(v *Value) bool {
 	case OpAMD64SETEQ:
 		return rewriteValueAMD64_OpAMD64SETEQ_0(v) || rewriteValueAMD64_OpAMD64SETEQ_10(v)
 	case OpAMD64SETEQmem:
-		return rewriteValueAMD64_OpAMD64SETEQmem_0(v) || rewriteValueAMD64_OpAMD64SETEQmem_10(v) || rewriteValueAMD64_OpAMD64SETEQmem_20(v)
+		return rewriteValueAMD64_OpAMD64SETEQmem_0(v) || rewriteValueAMD64_OpAMD64SETEQmem_10(v)
 	case OpAMD64SETG:
 		return rewriteValueAMD64_OpAMD64SETG_0(v)
 	case OpAMD64SETGE:
@@ -336,7 +336,7 @@ func rewriteValueAMD64(v *Value) bool {
 	case OpAMD64SETNE:
 		return rewriteValueAMD64_OpAMD64SETNE_0(v) || rewriteValueAMD64_OpAMD64SETNE_10(v)
 	case OpAMD64SETNEmem:
-		return rewriteValueAMD64_OpAMD64SETNEmem_0(v) || rewriteValueAMD64_OpAMD64SETNEmem_10(v) || rewriteValueAMD64_OpAMD64SETNEmem_20(v)
+		return rewriteValueAMD64_OpAMD64SETNEmem_0(v) || rewriteValueAMD64_OpAMD64SETNEmem_10(v)
 	case OpAMD64SHLL:
 		return rewriteValueAMD64_OpAMD64SHLL_0(v)
 	case OpAMD64SHLLconst:
@@ -37357,6 +37357,11 @@ func rewriteValueAMD64_OpAMD64SETEQmem_0(v *Value) bool {
 		v.AddArg(mem)
 		return true
 	}
+	return false
+}
+func rewriteValueAMD64_OpAMD64SETEQmem_10(v *Value) bool {
+	b := v.Block
+	_ = b
 	// match: (SETEQmem [off1] {sym1} (LEAQ [off2] {sym2} base) val mem)
 	// cond: is32Bit(off1+off2) && canMergeSym(sym1, sym2)
 	// result: (SETEQmem [off1+off2] {mergeSym(sym1,sym2)} base val mem)
@@ -37407,11 +37412,6 @@ func rewriteValueAMD64_OpAMD64SETEQmem_0(v *Value) bool {
 		v.AddArg(mem)
 		return true
 	}
-	return false
-}
-func rewriteValueAMD64_OpAMD64SETEQmem_10(v *Value) bool {
-	b := v.Block
-	_ = b
 	// match: (SETEQmem [off] {sym} ptr x:(FlagLT_ULT) mem)
 	// cond:
 	// result: (MOVBstore [off] {sym} ptr (MOVLconst <x.Type> [0]) mem)
@@ -37458,11 +37458,6 @@ func rewriteValueAMD64_OpAMD64SETEQmem_10(v *Value) bool {
 		v.AddArg(mem)
 		return true
 	}
-	return false
-}
-func rewriteValueAMD64_OpAMD64SETEQmem_20(v *Value) bool {
-	b := v.Block
-	_ = b
 	// match: (SETEQmem [off] {sym} ptr x:(FlagGT_ULT) mem)
 	// cond:
 	// result: (MOVBstore [off] {sym} ptr (MOVLconst <x.Type> [0]) mem)
@@ -39247,6 +39242,11 @@ func rewriteValueAMD64_OpAMD64SETNEmem_0(v *Value) bool {
 		v.AddArg(mem)
 		return true
 	}
+	return false
+}
+func rewriteValueAMD64_OpAMD64SETNEmem_10(v *Value) bool {
+	b := v.Block
+	_ = b
 	// match: (SETNEmem [off1] {sym1} (LEAQ [off2] {sym2} base) val mem)
 	// cond: is32Bit(off1+off2) && canMergeSym(sym1, sym2)
 	// result: (SETNEmem [off1+off2] {mergeSym(sym1,sym2)} base val mem)
@@ -39297,11 +39297,6 @@ func rewriteValueAMD64_OpAMD64SETNEmem_0(v *Value) bool {
 		v.AddArg(mem)
 		return true
 	}
-	return false
-}
-func rewriteValueAMD64_OpAMD64SETNEmem_10(v *Value) bool {
-	b := v.Block
-	_ = b
 	// match: (SETNEmem [off] {sym} ptr x:(FlagLT_ULT) mem)
 	// cond:
 	// result: (MOVBstore [off] {sym} ptr (MOVLconst <x.Type> [1]) mem)
@@ -39348,11 +39343,6 @@ func rewriteValueAMD64_OpAMD64SETNEmem_10(v *Value) bool {
 		v.AddArg(mem)
 		return true
 	}
-	return false
-}
-func rewriteValueAMD64_OpAMD64SETNEmem_20(v *Value) bool {
-	b := v.Block
-	_ = b
 	// match: (SETNEmem [off] {sym} ptr x:(FlagGT_ULT) mem)
 	// cond:
 	// result: (MOVBstore [off] {sym} ptr (MOVLconst <x.Type> [1]) mem)