all: fix typos

R=golang-dev, bradfitz, khr, r
CC=golang-dev
https://golang.org/cl/7461046

src/cmd/5c/peep.c

@@ -462,7 +462,7 @@ copy1(Adr *v1, Adr *v2, Reg *r, int f)
 		}
 		t = copyu(p, v2, A);
 		switch(t) {
-		case 2:	/* rar, cant split */
+		case 2:	/* rar, can't split */
 			if(debug['P'])
 				print("; %Drar; return 0\n", v2);
 			return 0;

src/cmd/5g/gsubr.c

@@ -1905,7 +1905,7 @@ odot:
 
 	for(i=1; i<o; i++) {
 		if(oary[i] >= 0)
-			fatal("cant happen");
+			fatal("can't happen");
 		gins(AMOVW, &n1, reg);
 		n1.xoffset = -(oary[i]+1);
 	}

src/cmd/5g/peep.c

@@ -496,7 +496,7 @@ copy1(Adr *v1, Adr *v2, Reg *r, int f)
 		}
 		t = copyu(p, v2, A);
 		switch(t) {
-		case 2:	/* rar, cant split */
+		case 2:	/* rar, can't split */
 			if(debug['P'])
 				print("; %Drar; return 0\n", v2);
 			return 0;
@@ -973,7 +973,7 @@ copyu(Prog *p, Adr *v, Adr *s)
 	switch(p->as) {
 
 	default:
-		print("copyu: cant find %A\n", p->as);
+		print("copyu: can't find %A\n", p->as);
 		return 2;
 
 	case AMOVM:
@@ -1288,7 +1288,7 @@ copyau1(Prog *p, Adr *v)
 				return 1;
 			return 0;
 		}
-		print("copyau1: cant tell %P\n", p);
+		print("copyau1: can't tell %P\n", p);
 	}
 	return 0;
 }

src/cmd/5g/reg.c

@@ -816,7 +816,7 @@ addmove(Reg *r, int bn, int rn, int f)
 		a->type = D_CONST;
 
 	if(v->addr)
-		fatal("addmove: shouldnt be doing this %A\n", a);
+		fatal("addmove: shouldn't be doing this %A\n", a);
 
 	switch(v->etype) {
 	default:

src/cmd/5l/pass.c

@@ -130,7 +130,7 @@ loop:
 				r = prg();
 				*r = *p;
 				if(!(r->mark&FOLL))
-					print("cant happen 1\n");
+					print("can't happen 1\n");
 				r->mark |= FOLL;
 				if(p != q) {
 					p = p->link;
@@ -150,7 +150,7 @@ loop:
 				if(!(r->link->mark&FOLL))
 					xfol(r->link, last);
 				if(!(r->cond->mark&FOLL))
-					print("cant happen 2\n");
+					print("can't happen 2\n");
 				return;
 			}
 		}

src/cmd/6c/peep.c

@@ -483,7 +483,7 @@ copy1(Adr *v1, Adr *v2, Reg *r, int f)
 		}
 		t = copyu(p, v2, A);
 		switch(t) {
-		case 2:	/* rar, cant split */
+		case 2:	/* rar, can't split */
 			if(debug['P'])
 				print("; %D rar; return 0\n", v2);
 			return 0;

src/cmd/6c/txt.c

@@ -1188,7 +1188,7 @@ print("botch in doindex\n");
 	else if(n->left->op == OREGISTER)
 		idx.ptr = n->left->reg;
 	else if(n->left->op != OADDR) {
-		reg[D_BP]++;	// cant be used as a base
+		reg[D_BP]++;	// can't be used as a base
 		regalloc(&nod1, &qregnode, Z);
 		cgen(n->left, &nod1);
 		idx.ptr = nod1.reg;

src/cmd/6g/cgen.c

@@ -1480,7 +1480,7 @@ cadable(Node *n)
  * Small structs or arrays with elements of basic type are
  * also supported.
  * nr is N when assigning a zero value.
- * return 1 if can do, 0 if cant.
+ * return 1 if can do, 0 if can't.
  */
 int
 componentgen(Node *nr, Node *nl)

src/cmd/6g/gsubr.c

@@ -494,7 +494,7 @@ fp:
 		break;
 
 	case 2:		// offset output arg
-fatal("shouldnt be used");
+fatal("shouldn't be used");
 		n->op = OINDREG;
 		n->val.u.reg = D_SP;
 		n->xoffset += types[tptr]->width;
@@ -2038,7 +2038,7 @@ odot:
 
 	for(i=1; i<o; i++) {
 		if(oary[i] >= 0)
-			fatal("cant happen");
+			fatal("can't happen");
 		gins(AMOVQ, &n1, reg);
 		n1.xoffset = -(oary[i]+1);
 	}

src/cmd/6g/peep.c

@@ -843,7 +843,7 @@ copy1(Adr *v1, Adr *v2, Reg *r, int f)
 		}
 		t = copyu(p, v2, A);
 		switch(t) {
-		case 2:	/* rar, cant split */
+		case 2:	/* rar, can't split */
 			if(debug['P'])
 				print("; %D rar; return 0\n", v2);
 			return 0;

src/cmd/8c/peep.c

@@ -403,7 +403,7 @@ copy1(Adr *v1, Adr *v2, Reg *r, int f)
 		}
 		t = copyu(p, v2, A);
 		switch(t) {
-		case 2:	/* rar, cant split */
+		case 2:	/* rar, can't split */
 			if(debug['P'])
 				print("; %D rar; return 0\n", v2);
 			return 0;

src/cmd/8c/txt.c

@@ -963,7 +963,7 @@ print("botch in doindex\n");
 	else if(n->left->op == OREGISTER)
 		idx.ptr = n->left->reg;
 	else if(n->left->op != OADDR) {
-		reg[D_BP]++;	// cant be used as a base
+		reg[D_BP]++;	// can't be used as a base
 		regalloc(&nod1, &regnode, Z);
 		cgen(n->left, &nod1);
 		idx.ptr = nod1.reg;

src/cmd/8g/cgen.c

@@ -1319,7 +1319,7 @@ cadable(Node *n)
  * copy a composite value by moving its individual components.
  * Slices, strings and interfaces are supported.
  * nr is N when assigning a zero value.
- * return 1 if can do, 0 if cant.
+ * return 1 if can do, 0 if can't.
  */
 int
 componentgen(Node *nr, Node *nl)

src/cmd/8g/peep.c

@@ -608,7 +608,7 @@ copy1(Adr *v1, Adr *v2, Reg *r, int f)
 		}
 		t = copyu(p, v2, A);
 		switch(t) {
-		case 2:	/* rar, cant split */
+		case 2:	/* rar, can't split */
 			if(debug['P'])
 				print("; %D rar; return 0\n", v2);
 			return 0;

src/cmd/8g/reg.c

@@ -1824,7 +1824,7 @@ hash32to16(uint32 h)
 static void
 fixtemp(Prog *firstp)
 {
-	static uint8 counts[1<<16]; // A hash table to count variable occurences.
+	static uint8 counts[1<<16]; // A hash table to count variable occurrences.
 	int i;
 	Prog *p, *p2;
 	uint32 h;

src/cmd/cc/funct.c

@@ -235,7 +235,7 @@ no:
 	return 0;
 
 bad:
-	diag(n, "cant rewrite typestr for op %O\n", o);
+	diag(n, "can't rewrite typestr for op %O\n", o);
 	prtree(n, "isfunct");
 	n->type = T;
 	return 1;

src/cmd/cc/lexbody

@@ -762,7 +762,7 @@ ieeedtod(Ieee *ieee, double native)
 		return;
 	}
 	fr = frexp(native, &exp);
-	f = 2097152L;		/* shouldnt use fp constants here */
+	f = 2097152L;		/* shouldn't use fp constants here */
 	fr = modf(fr*f, &ho);
 	ieee->h = ho;
 	ieee->h &= 0xfffffL;

src/cmd/cc/pgen.c

@@ -75,7 +75,7 @@ codgen(Node *n, Node *nn)
 	 */
 	for(n1 = nn;; n1 = n1->left) {
 		if(n1 == Z) {
-			diag(nn, "cant find function name");
+			diag(nn, "can't find function name");
 			return;
 		}
 		if(n1->op == ONAME)

src/cmd/cc/pswt.c

@@ -156,7 +156,7 @@ ieeedtod(Ieee *ieee, double native)
 		return;
 	}
 	fr = frexp(native, &exp);
-	f = 2097152L;		/* shouldnt use fp constants here */
+	f = 2097152L;		/* shouldn't use fp constants here */
 	fr = modf(fr*f, &ho);
 	ieee->h = ho;
 	ieee->h &= 0xfffffL;

src/cmd/dist/plan9.c

@@ -578,7 +578,7 @@ hassuffix(char *p, char *suffix)
 	return np >= ns && strcmp(p+np-ns, suffix) == 0;
 }
 
-// hasprefix reports whether p begins wtih prefix.
+// hasprefix reports whether p begins with prefix.
 bool
 hasprefix(char *p, char *prefix)
 {

src/cmd/dist/unix.c

@@ -548,7 +548,7 @@ hassuffix(char *p, char *suffix)
 	return np >= ns && strcmp(p+np-ns, suffix) == 0;
 }
 
-// hasprefix reports whether p begins wtih prefix.
+// hasprefix reports whether p begins with prefix.
 bool
 hasprefix(char *p, char *prefix)
 {

src/cmd/gc/obj.c

@@ -235,7 +235,7 @@ ieeedtod(uint64 *ieee, double native)
 		return;
 	}
 	fr = frexp(native, &exp);
-	f = 2097152L;		/* shouldnt use fp constants here */
+	f = 2097152L;		/* shouldn't use fp constants here */
 	fr = modf(fr*f, &ho);
 	h = ho;
 	h &= 0xfffffL;

src/cmd/gc/swt.c

@@ -315,7 +315,7 @@ casebody(Node *sw, Node *typeswvar)
 		}
 		stat = concat(stat, n->nbody);
 
-		// botch - shouldnt fall thru declaration
+		// botch - shouldn't fall thru declaration
 		last = stat->end->n;
 		if(last->op == OXFALL) {
 			if(typeswvar) {

src/cmd/go/test.bash

@@ -151,7 +151,7 @@ if ! ./testgo list std | cmp -s test_std.list - ; then
 fi
 rm -f test_std.list
 
-# issue 4096. Validate the output of unsucessful go install foo/quxx 
+# issue 4096. Validate the output of unsuccessful go install foo/quxx 
 if [ $(./testgo install 'foo/quxx' 2>&1 | grep -c 'cannot find package "foo/quxx" in any of') -ne 1 ] ; then
 	echo 'go install foo/quxx expected error: .*cannot find package "foo/quxx" in any of'
 	ok=false

src/cmd/ld/data.c

@@ -367,7 +367,7 @@ dynreloc(void)
 {
 	Sym *s;
 
-	// -d supresses dynamic loader format, so we may as well not
+	// -d suppresses dynamic loader format, so we may as well not
 	// compute these sections or mark their symbols as reachable.
 	if(debug['d'] && HEADTYPE != Hwindows)
 		return;

src/cmd/ld/dwarf.c

@@ -133,7 +133,7 @@ sleb128put(vlong v)
 /*
  * Defining Abbrevs.  This is hardcoded, and there will be
  * only a handful of them.  The DWARF spec places no restriction on
- * the ordering of atributes in the Abbrevs and DIEs, and we will
+ * the ordering of attributes in the Abbrevs and DIEs, and we will
  * always write them out in the order of declaration in the abbrev.
  * This implementation relies on tag, attr < 127, so they serialize as
  * a char.  Higher numbered user-defined tags or attributes can be used
@@ -1646,7 +1646,7 @@ guesslang(char *s)
 }
 
 /*
- * Generate short opcodes when possible, long ones when neccesary.
+ * Generate short opcodes when possible, long ones when necessary.
  * See section 6.2.5
  */
 
@@ -1938,7 +1938,7 @@ enum
 {
 	CIERESERVE = 16,
 	DATAALIGNMENTFACTOR = -4,	// TODO -PtrSize?
-	FAKERETURNCOLUMN = 16		// TODO gdb6 doesnt like > 15?
+	FAKERETURNCOLUMN = 16		// TODO gdb6 doesn't like > 15?
 };
 
 static void

src/cmd/yacc/units.txt

@@ -481,7 +481,7 @@ mgd			megagal/day
 mh			millihenry
 mhz			1e+6/sec
 mil			1e-3 in
-millenium		1000 year
+millennium		1000 year
 minersinch		1.5 ft³/min
 minim			1|60 fldr
 mo			month

src/libmach/6obj.c

@@ -52,7 +52,7 @@ _is6(char *t)
 {
 	uchar *s = (uchar*)t;
 
-	return  s[0] == (ANAME&0xff)			/* aslo = ANAME */
+	return  s[0] == (ANAME&0xff)			/* also = ANAME */
 		&& s[1] == ((ANAME>>8)&0xff)
 		&& s[2] == D_FILE			/* type */
 		&& s[3] == 1				/* sym */

src/libmach/8obj.c

@@ -52,7 +52,7 @@ _is8(char *t)
 {
 	uchar *s = (uchar*)t;
 
-	return  s[0] == (ANAME&0xff)			/* aslo = ANAME */
+	return  s[0] == (ANAME&0xff)			/* also = ANAME */
 		&& s[1] == ((ANAME>>8)&0xff)
 		&& s[2] == D_FILE			/* type */
 		&& s[3] == 1				/* sym */

test/chan/doubleselect.go

@@ -36,7 +36,7 @@ func sender(n int, c1, c2, c3, c4 chan<- int) {
 }
 
 // mux receives the values from sender and forwards them onto another channel.
-// It would be simplier to just have sender's four cases all be the same
+// It would be simpler to just have sender's four cases all be the same
 // channel, but this doesn't actually trigger the bug.
 func mux(out chan<- int, in <-chan int, done chan<- bool) {
 	for v := range in {