cmd/link: replace unrolled Cput loops with Cwrite/Cwritestring

Passes toolstash-check -all.

Change-Id: I1c85a2c0390517f4e9cdbddddbf3c353edca65b3
Reviewed-on: https://go-review.googlesource.com/64051
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/link/internal/amd64/asm.go

@@ -781,10 +781,7 @@ func asmb(ctxt *ld.Link) {
 			sym := ctxt.Syms.Lookup("pclntab", 0)
 			if sym != nil {
 				ld.Lcsize = int32(len(sym.P))
-				for i := 0; int32(i) < ld.Lcsize; i++ {
+				ld.Cwrite(sym.P)
-					ld.Cput(sym.P[i])
-				}
-
 				ld.Cflush()
 			}
 

src/cmd/link/internal/arm/asm.go

@@ -829,10 +829,7 @@ func asmb(ctxt *ld.Link) {
 			sym := ctxt.Syms.Lookup("pclntab", 0)
 			if sym != nil {
 				ld.Lcsize = int32(len(sym.P))
-				for i := 0; int32(i) < ld.Lcsize; i++ {
+				ld.Cwrite(sym.P)
-					ld.Cput(sym.P[i])
-				}
-
 				ld.Cflush()
 			}
 

src/cmd/link/internal/arm64/asm.go

@@ -465,10 +465,7 @@ func asmb(ctxt *ld.Link) {
 			sym := ctxt.Syms.Lookup("pclntab", 0)
 			if sym != nil {
 				ld.Lcsize = int32(len(sym.P))
-				for i := 0; int32(i) < ld.Lcsize; i++ {
+				ld.Cwrite(sym.P)
-					ld.Cput(sym.P[i])
-				}
-
 				ld.Cflush()
 			}
 

src/cmd/link/internal/ld/elf.go

@@ -1120,9 +1120,7 @@ func getElfEhdr() *ElfEhdr {
 }
 
 func elf64writehdr() uint32 {
-	for i := 0; i < EI_NIDENT; i++ {
+	Cwrite(ehdr.ident[:])
-		Cput(ehdr.ident[i])
-	}
 	Thearch.Wput(ehdr.type_)
 	Thearch.Wput(ehdr.machine)
 	Thearch.Lput(ehdr.version)
@@ -1140,9 +1138,7 @@ func elf64writehdr() uint32 {
 }
 
 func elf32writehdr() uint32 {
-	for i := 0; i < EI_NIDENT; i++ {
+	Cwrite(ehdr.ident[:])
-		Cput(ehdr.ident[i])
-	}
 	Thearch.Wput(ehdr.type_)
 	Thearch.Wput(ehdr.machine)
 	Thearch.Lput(ehdr.version)

src/cmd/link/internal/ld/symtab.go

@@ -233,13 +233,10 @@ func putplan9sym(ctxt *Link, x *Symbol, s string, typ SymbolType, addr int64, go
 		Lputb(uint32(addr))
 		Cput(uint8(t + 0x80)) /* 0x80 is variable length */
 
-		var i int
+		Cwritestring(s)
-		for i = 0; i < len(s); i++ {
-			Cput(s[i])
-		}
 		Cput(0)
 
-		Symsize += int32(l) + 1 + int32(i) + 1
+		Symsize += int32(l) + 1 + int32(len(s)) + 1
 
 	default:
 		return

src/cmd/link/internal/mips64/asm.go

@@ -258,10 +258,7 @@ func asmb(ctxt *ld.Link) {
 			sym := ctxt.Syms.Lookup("pclntab", 0)
 			if sym != nil {
 				ld.Lcsize = int32(len(sym.P))
-				for i := 0; int32(i) < ld.Lcsize; i++ {
+				ld.Cwrite(sym.P)
-					ld.Cput(sym.P[i])
-				}
-
 				ld.Cflush()
 			}
 		}

src/cmd/link/internal/ppc64/asm.go

@@ -987,10 +987,7 @@ func asmb(ctxt *ld.Link) {
 			sym := ctxt.Syms.Lookup("pclntab", 0)
 			if sym != nil {
 				ld.Lcsize = int32(len(sym.P))
-				for i := 0; int32(i) < ld.Lcsize; i++ {
+				ld.Cwrite(sym.P)
-					ld.Cput(sym.P[i])
-				}
-
 				ld.Cflush()
 			}
 		}

src/cmd/link/internal/x86/asm.go

@@ -709,10 +709,7 @@ func asmb(ctxt *ld.Link) {
 			sym := ctxt.Syms.Lookup("pclntab", 0)
 			if sym != nil {
 				ld.Lcsize = int32(len(sym.P))
-				for i := 0; int32(i) < ld.Lcsize; i++ {
+				ld.Cwrite(sym.P)
-					ld.Cput(sym.P[i])
-				}
-
 				ld.Cflush()
 			}