fix conditional branch instructions for unsigned ints and

	float. fix sgen endianess in sgen character copying.

        go/test: passes 97% (336/345)

R=rsc
http://go/go-review/1015007

src/cmd/5g/cgen.c

@@ -429,13 +429,13 @@ flt2:	// binary
 		regalloc(&f1, n->type, N);
 		gmove(&f0, &f1);
 		cgen(nr, &f0);
-		gins(optoas(n->op, n->type), &f1, &f0);
+		gins(optoas(n->op, n->type), &f0, &f1);
 	} else {
 		cgen(nr, &f0);
 		regalloc(&f1, n->type, N);
 		gmove(&f0, &f1);
 		cgen(nl, &f0);
-		gins(optoas(n->op, n->type), &f1, &f0);
+		gins(optoas(n->op, n->type), &f0, &f1);
 	}
 	gmove(&f1, res);
 	regfree(&f0);
@@ -1170,29 +1170,21 @@ sgen(Node *n, Node *res, int32 w)
 			p = gins(AMOVW, &src, &tmp);
 			p->from.type = D_OREG;
 
-			//	MOVW	tmp>>((4-c)*8),src
-			p = gins(AMOVW, N, &src);
-			p->from.type = D_SHIFT;
-			p->from.offset = SHIFT_LR | ((4-c)*8)<<7 | tmp.val.u.reg;
+			//	MOVW	tmp<<((4-c)*8),src
+			gshift(AMOVW, &tmp, SHIFT_LL, ((4-c)*8), &src);
 
-			//	MOVW	src<<((4-c)*8),src
-			p = gins(AMOVW, N, &src);
-			p->from.type = D_SHIFT;
-			p->from.offset = SHIFT_LL | ((4-c)*8)<<7 | tmp.val.u.reg;
+			//	MOVW	src>>((4-c)*8),src
+			gshift(AMOVW, &src, SHIFT_LR, ((4-c)*8), &src);
 
 			//	MOVW	(dst), tmp
 			p = gins(AMOVW, &dst, &tmp);
 			p->from.type = D_OREG;
 
-			//	MOVW	tmp<<(c*8),tmp
-			p = gins(AMOVW, N, &tmp);
-			p->from.type = D_SHIFT;
-			p->from.offset = SHIFT_LL | (c*8)<<7 | tmp.val.u.reg;
-
 			//	MOVW	tmp>>(c*8),tmp
-			p = gins(AMOVW, N, &tmp);
-			p->from.type = D_SHIFT;
-			p->from.offset = SHIFT_LR | (c*8)<<7 | tmp.val.u.reg;
+			gshift(AMOVW, &tmp, SHIFT_LR, (c*8), &tmp);
+
+			//	MOVW	tmp<<(c*8),tmp
+			gshift(AMOVW, &tmp, SHIFT_LL, c*8, &tmp);
 
 			//	ORR		src, tmp
 			gins(AORR, &src, &tmp);

src/cmd/5g/gsubr.c

@@ -1188,52 +1188,64 @@ optoas(int op, Type *t)
 	case CASE(OLT, TINT16):
 	case CASE(OLT, TINT32):
 	case CASE(OLT, TINT64):
+	case CASE(OLT, TFLOAT32):
+	case CASE(OLT, TFLOAT64):
+		a = ABLT;
+		break;
+
 	case CASE(OLT, TUINT8):
 	case CASE(OLT, TUINT16):
 	case CASE(OLT, TUINT32):
 	case CASE(OLT, TUINT64):
-	case CASE(OGT, TFLOAT32):
-	case CASE(OGT, TFLOAT64):
-		a = ABLT;
+		a = ABLO;
 		break;
 
 	case CASE(OLE, TINT8):
 	case CASE(OLE, TINT16):
 	case CASE(OLE, TINT32):
 	case CASE(OLE, TINT64):
+	case CASE(OLE, TFLOAT32):
+	case CASE(OLE, TFLOAT64):
+		a = ABLE;
+		break;
+
 	case CASE(OLE, TUINT8):
 	case CASE(OLE, TUINT16):
 	case CASE(OLE, TUINT32):
 	case CASE(OLE, TUINT64):
-	case CASE(OGE, TFLOAT32):
-	case CASE(OGE, TFLOAT64):
-		a = ABLE;
+		a = ABLS;
 		break;
 
 	case CASE(OGT, TINT8):
 	case CASE(OGT, TINT16):
 	case CASE(OGT, TINT32):
 	case CASE(OGT, TINT64):
+	case CASE(OGT, TFLOAT32):
+	case CASE(OGT, TFLOAT64):
+		a = ABGT;
+		break;
+
 	case CASE(OGT, TUINT8):
 	case CASE(OGT, TUINT16):
 	case CASE(OGT, TUINT32):
 	case CASE(OGT, TUINT64):
-	case CASE(OLT, TFLOAT32):
-	case CASE(OLT, TFLOAT64):
-		a = ABGT;
+		a = ABHI;
 		break;
 
 	case CASE(OGE, TINT8):
 	case CASE(OGE, TINT16):
 	case CASE(OGE, TINT32):
 	case CASE(OGE, TINT64):
+	case CASE(OGE, TFLOAT32):
+	case CASE(OGE, TFLOAT64):
+		a = ABGE;
+		break;
+
 	case CASE(OGE, TUINT8):
 	case CASE(OGE, TUINT16):
 	case CASE(OGE, TUINT32):
 	case CASE(OGE, TUINT64):
-	case CASE(OLE, TFLOAT32):
-	case CASE(OLE, TFLOAT64):
-		a = ABGE;
+		a = ABHS;
 		break;
 
 	case CASE(OCMP, TBOOL):

test/arm-pass.txt

@@ -21,10 +21,13 @@ cmp2.go
 cmp3.go
 cmp4.go
 cmp5.go
+complit.go
 compos.go
 const.go
 const1.go
 const2.go
+const3.go
+convert.go
 convert3.go
 convlit.go
 convlit1.go
@@ -190,12 +193,14 @@ fixedbugs/bug173.go
 fixedbugs/bug174.go
 fixedbugs/bug175.go
 fixedbugs/bug176.go
+fixedbugs/bug177.go
 fixedbugs/bug178.go
 fixedbugs/bug179.go
 fixedbugs/bug180.go
 fixedbugs/bug181.go
 fixedbugs/bug182.go
 fixedbugs/bug183.go
+fixedbugs/bug184.go
 fixedbugs/bug185.go
 fixedbugs/bug186.go
 fixedbugs/bug187.go
@@ -218,6 +223,7 @@ fixedbugs/bug203.go
 fixedbugs/bug204.go
 fixedbugs/bug205.go
 fixedbugs/bug206.go
+fixedbugs/bug207.go
 fixedbugs/bug208.go
 fixedbugs/bug209.go
 fixedbugs/bug211.go
@@ -240,6 +246,7 @@ import1.go
 indirect.go
 indirect1.go
 initcomma.go
+initialize.go
 initializerr.go
 initsyscall.go
 int_lit.go
@@ -252,6 +259,7 @@ interface/embed.go
 interface/embed0.go
 interface/explicit.go
 interface/fail.go
+interface/fake.go
 interface/pointer.go
 interface/receiver.go
 interface/receiver1.go
@@ -293,6 +301,10 @@ ken/sliceslice.go
 ken/string.go
 ken/strvar.go
 literal.go
+malloc1.go
+mallocrand.go
+mallocrep.go
+mallocrep1.go
 map.go
 method.go
 method1.go
@@ -318,6 +330,7 @@ switch.go
 switch1.go
 test0.go
 typeswitch.go
+typeswitch1.go
 utf.go
 varinit.go
 vectors.go