64bit and float code generation. fmt compiles but

reflect is broken so fmt doesn't work.

go/test: passes 83% (285/342)

R=rsc
APPROVED=rsc
DELTA=415  (240 added, 29 deleted, 146 changed)
OCL=35576
CL=35588

src/cmd/5g/cgen.c

@@ -182,7 +182,6 @@ cgen(Node *n, Node *res)
 
 	if(nl != N && isfloat[n->type->etype] && isfloat[nl->type->etype])
 		goto flt;
-
 	switch(n->op) {
 	default:
 		dump("cgen", n);
@@ -252,6 +251,7 @@ cgen(Node *n, Node *res)
 			cgen(nl, res);
 			break;
 		}
+
 		mgen(nl, &n1, res);
 		gmove(&n1, res);
 		mfree(&n1);
@@ -1010,6 +1010,7 @@ stkof(Node *n)
 /*
  * block copy:
  *	memmove(&res, &n, w);
+ * NB: character copy assumed little endian architecture
  */
 void
 sgen(Node *n, Node *res, int32 w)
@@ -1136,8 +1137,42 @@ sgen(Node *n, Node *res, int32 w)
 			q--;
 		}
 
-		if (c != 0)
-			fatal("sgen: character copy not implemented");
+		if (c != 0) {
+			//	MOVW	(src), tmp
+			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	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	(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;
+
+			//	ORR		src, tmp
+			gins(AORR, &src, &tmp);
+
+			//	MOVW	tmp, (dst)
+			p = gins(AMOVW, &tmp, &dst);
+			p->to.type = D_OREG;
+		}
 	}
  	regfree(&dst);
 	regfree(&src);

src/cmd/5g/cgen64.c

@@ -14,23 +14,30 @@ cgen64(Node *n, Node *res)
 {
 	Node t1, t2, *l, *r;
 	Node lo1, lo2, hi1, hi2;
-	Node al, ah, bl, bh, cl, ch; //, s1, s2;
-	Prog *p1;
- //, *p2;
+	Node al, ah, bl, bh, cl, ch, s, n1, creg;
+	Prog *p1, *p2, *p3;
+
 	uint64 v;
-//	uint32 lv, hv;
 
 	if(res->op != OINDREG && res->op != ONAME) {
 		dump("n", n);
 		dump("res", res);
 		fatal("cgen64 %O of %O", n->op, res->op);
 	}
+
+	l = n->left;
+	if(!l->addable) {
+		tempalloc(&t1, l->type);
+		cgen(l, &t1);
+		l = &t1;
+	}
+
+	split64(l, &lo1, &hi1);
 	switch(n->op) {
 	default:
 		fatal("cgen64 %O", n->op);
 
 	case OMINUS:
-		split64(n->left, &lo1, &hi1);
 		split64(res, &lo2, &hi2);
 
 		regalloc(&t1, lo1.type, N);
@@ -55,13 +62,22 @@ cgen64(Node *n, Node *res)
 		splitclean();
 		return;
 
-//	case OCOM:
-//		cgen(n->left, res);
-//		split64(res, &lo1, &hi1);
-//		gins(ANOTL, N, &lo1);
-//		gins(ANOTL, N, &hi1);
-//		splitclean();
-//		return;
+	case OCOM:
+		split64(res, &lo2, &hi2);
+		regalloc(&n1, lo1.type, N);
+
+		gins(AMOVW, &lo1, &n1);
+		gins(AMVN, &n1, &n1);
+		gins(AMOVW, &n1, &lo2);
+
+		gins(AMOVW, &hi1, &n1);
+		gins(AMVN, &n1, &n1);
+		gins(AMOVW, &n1, &hi2);
+
+		regfree(&n1);
+		splitclean();
+		splitclean();
+		return;
 
 	case OADD:
 	case OSUB:
@@ -76,21 +92,13 @@ cgen64(Node *n, Node *res)
 		break;
 	}
 
-	l = n->left;
+	// setup for binary operators
 	r = n->right;
-	if(!l->addable) {
-		tempalloc(&t1, l->type);
-		cgen(l, &t1);
-		l = &t1;
-	}
 	if(r != N && !r->addable) {
 		tempalloc(&t2, r->type);
 		cgen(r, &t2);
 		r = &t2;
 	}
-
-	// Setup for binary operation.
-	split64(l, &lo1, &hi1);
 	if(is64(r->type))
 		split64(r, &lo2, &hi2);
 
@@ -117,10 +125,16 @@ cgen64(Node *n, Node *res)
 
 	case OSUB:
 		// TODO: Constants.
+		regalloc(&bl, types[TPTR32], N);
+		regalloc(&bh, types[TPTR32], N);
 		gins(AMOVW, &lo1, &al);
 		gins(AMOVW, &hi1, &ah);
-		gins(ASUB, &lo2, &al);
-		gins(ASBC, &hi2, &ah);
+		gins(AMOVW, &lo2, &bl);
+		gins(AMOVW, &hi2, &bh);
+		gins(ASUB, &bl, &al);
+		gins(ASBC, &bh, &ah);
+		regfree(&bl);
+		regfree(&bh);
 		break;
 
 	case OMUL:
@@ -174,6 +188,11 @@ cgen64(Node *n, Node *res)
 		break;
 
 	case OLSH:
+		regalloc(&bh, hi1.type, N);
+		regalloc(&bl, lo1.type, N);
+		gins(AMOVW, &hi1, &bh);
+		gins(AMOVW, &lo1, &bl);
+
 		if(r->op == OLITERAL) {
 			v = mpgetfix(r->val.u.xval);
 			if(v >= 64) {
@@ -181,173 +200,297 @@ cgen64(Node *n, Node *res)
 				// here and below (verify it optimizes to EOR)
 				gins(AEOR, &al, &al);
 				gins(AEOR, &ah, &ah);
-				break;
+				goto olsh_break;
 			}
 			if(v >= 32) {
 				gins(AEOR, &al, &al);
-				//	MOVW	lo1<<(v-32), ah
-				p1 = gins(AMOVW, &lo1, &ah);
+				//	MOVW	bl<<(v-32), ah
+				p1 = gins(AMOVW, &bl, &ah);
 				p1->from.type = D_SHIFT;
-				p1->from.offset = SHIFT_LL | (v-32)<<7 | lo1.val.u.reg;
+				p1->from.offset = SHIFT_LL | (v-32)<<7 | bl.val.u.reg;
 				p1->from.reg = NREG;
-				break;
+				goto olsh_break;
 			}
 
 			// general literal left shift
 
-			//	MOVW	lo1<<v, al
-			p1 = gins(AMOVW, &lo1, &al);
+			//	MOVW	bl<<v, al
+			p1 = gins(AMOVW, &bl, &al);
 			p1->from.type = D_SHIFT;
-			p1->from.offset = SHIFT_LL | v<<7 | lo1.val.u.reg;
+			p1->from.offset = SHIFT_LL | v<<7 | bl.val.u.reg;
 			p1->from.reg = NREG;
-			break;
 
-			//	MOVW	hi1<<v, ah
-			p1 = gins(AMOVW, &hi1, &ah);
+			//	MOVW	bh<<v, ah
+			p1 = gins(AMOVW, &bh, &ah);
 			p1->from.type = D_SHIFT;
-			p1->from.offset = SHIFT_LL | v<<7 | hi1.val.u.reg;
+			p1->from.offset = SHIFT_LL | v<<7 | bh.val.u.reg;
 			p1->from.reg = NREG;
-			break;
 
-			//	OR		lo1>>(32-v), ah
-			p1 = gins(AORR, &lo1, &ah);
+			//	OR		bl>>(32-v), ah
+			p1 = gins(AORR, &bl, &ah);
 			p1->from.type = D_SHIFT;
-			p1->from.offset = SHIFT_LR | (32-v)<<7 | lo1.val.u.reg;
+			p1->from.offset = SHIFT_LR | (32-v)<<7 | bl.val.u.reg;
 			p1->from.reg = NREG;
-			break;
+			goto olsh_break;
 		}
 
-		fatal("cgen64 OLSH, !OLITERAL not implemented");
+		regalloc(&s, types[TUINT32], N);
+		regalloc(&creg, types[TUINT32], N);
+		gmove(r, &s);
+
+		// check if shift is < 32
+		nodconst(&n1, types[TUINT32], 32);
+		gmove(&n1, &creg);
+		gcmp(ACMP, &s, &creg);
+
+		//	MOVW.LT		bl<<s, al
+		p1 = gins(AMOVW, N, &al);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LL | s.val.u.reg << 8 | 1<<4 | bl.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		//	MOVW.LT		bh<<s, al
+		p1 = gins(AMOVW, N, &al);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LL | s.val.u.reg << 8 | 1<<4 | bh.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		//	SUB.LT		creg, s
+		p1 = gins(ASUB, &creg, &s);
+		p1->scond = C_SCOND_LT;
+
+		//	OR.LT		bl>>(32-s), ah
+		p1 = gins(AMOVW, N, &ah);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LR | t1.val.u.reg<<8| 1<<4 | bl.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		//	BLT	end
+		p2 = gbranch(ABLT, T);
+
+		// check if shift is < 64
+		nodconst(&n1, types[TUINT32], 64);
+		gmove(&n1, &creg);
+		gcmp(ACMP, &s, &creg);
+
+		//	EOR.LT	al, al
+		p1 = gins(AEOR, &al, &al);
+		p1->scond = C_SCOND_LT;
+
+		//	MOVW.LT		creg>>1, creg
+		p1 = gins(AMOVW, N, &creg);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LR | 1<<7 | creg.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		//	SUB.LT		creg, s
+		p1 = gins(ASUB, &s, &creg);
+		p1->scond = C_SCOND_LT;
+
+		//	MOVW	bl<<(s-32), ah
+		p1 = gins(AMOVW, N, &ah);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LL | s.val.u.reg<<8 | 1<<4 | bl.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		p3 = gbranch(ABLT, T);
+
+		gins(AEOR, &al, &al);
+		gins(AEOR, &ah, &ah);
+
+		patch(p2, pc);
+		patch(p3, pc);
+		regfree(&s);
+		regfree(&creg);
+
+olsh_break:
+		regfree(&bl);
+		regfree(&bh);
 		break;
 
 
 	case ORSH:
+		regalloc(&bh, hi1.type, N);
+		regalloc(&bl, lo1.type, N);
+		gins(AMOVW, &hi1, &bh);
+		gins(AMOVW, &lo1, &bl);
+
 		if(r->op == OLITERAL) {
 			v = mpgetfix(r->val.u.xval);
 			if(v >= 64) {
-				if(hi1.type->etype == TINT32) {
-					//	MOVW	hi1->31, al
-					p1 = gins(AMOVW, &hi1, &al);
+				if(bh.type->etype == TINT32) {
+					//	MOVW	bh->31, al
+					p1 = gins(AMOVW, N, &al);
 					p1->from.type = D_SHIFT;
-					p1->from.offset = SHIFT_AR | 31 << 7 | hi1.val.u.reg;
-					p1->from.reg = NREG;
+					p1->from.offset = SHIFT_AR | 31 << 7 | bh.val.u.reg;
 
-					//	MOVW	hi1->31, ah
-					p1 = gins(AMOVW, &hi1, &ah);
+					//	MOVW	bh->31, ah
+					p1 = gins(AMOVW, N, &ah);
 					p1->from.type = D_SHIFT;
-					p1->from.offset = SHIFT_AR | 31 << 7 | hi1.val.u.reg;
-					p1->from.reg = NREG;
+					p1->from.offset = SHIFT_AR | 31 << 7 | bh.val.u.reg;
 				} else {
 					gins(AEOR, &al, &al);
 					gins(AEOR, &ah, &ah);
 				}
-				break;
+				goto orsh_break;
 			}
 			if(v >= 32) {
-				if(hi1.type->etype == TINT32) {
-					//	MOVW	hi1->(v-32), al
-					p1 = gins(AMOVW, &hi1, &al);
+				if(bh.type->etype == TINT32) {
+					//	MOVW	bh->(v-32), al
+					p1 = gins(AMOVW, N, &al);
 					p1->from.type = D_SHIFT;
-					p1->from.offset = SHIFT_AR | (v-32)<<7 | hi1.val.u.reg;
-					p1->from.reg = NREG;
+					p1->from.offset = SHIFT_AR | (v-32)<<7 | bh.val.u.reg;
 
-					//	MOVW	hi1->31, ah
-					p1 = gins(AMOVW, &hi1, &ah);
+					//	MOVW	bh->31, ah
+					p1 = gins(AMOVW, N, &ah);
 					p1->from.type = D_SHIFT;
-					p1->from.offset = SHIFT_AR | 31<<7 | hi1.val.u.reg;
-					p1->from.reg = NREG;
+					p1->from.offset = SHIFT_AR | 31<<7 | bh.val.u.reg;
 				} else {
-					//	MOVW	hi1>>(v-32), al
-					p1 = gins(AMOVW, &hi1, &al);
+					//	MOVW	bh>>(v-32), al
+					p1 = gins(AMOVW, N, &al);
 					p1->from.type = D_SHIFT;
-					p1->from.offset = SHIFT_LR | (v-32)<<7 | hi1.val.u.reg;
-					p1->from.reg = NREG;
+					p1->from.offset = SHIFT_LR | (v-32)<<7 | bh.val.u.reg;
 					gins(AEOR, &ah, &ah);
 				}
-				break;
+				goto orsh_break;
 			}
 
 			// general literal right shift
 
-			//	MOVW	lo1>>v, al
-			p1 = gins(AMOVW, &lo1, &al);
+			//	MOVW	bl>>v, al
+			p1 = gins(AMOVW, N, &al);
 			p1->from.type = D_SHIFT;
-			p1->from.offset = SHIFT_LR | v<<7 | lo1.val.u.reg;
-			p1->from.reg = NREG;
+			p1->from.offset = SHIFT_LR | v<<7 | bl.val.u.reg;
 
-			//	OR		hi1<<(32-v), al, al
-			p1 = gins(AORR, &hi1, &al);
+			//	OR		bh<<(32-v), al, al
+			p1 = gins(AORR, N, &al);
 			p1->from.type = D_SHIFT;
-			p1->from.offset = SHIFT_LL | (32-v)<<7 | hi1.val.u.reg;
-			p1->from.reg = NREG;
+			p1->from.offset = SHIFT_LL | (32-v)<<7 | bh.val.u.reg;
 			p1->reg = al.val.u.reg;
 
-			if(hi1.type->etype == TINT32) {
-				//	MOVW	hi1->v, ah
-				p1 = gins(AMOVW, &hi1, &ah);
+			if(bh.type->etype == TINT32) {
+				//	MOVW	bh->v, ah
+				p1 = gins(AMOVW, N, &ah);
 				p1->from.type = D_SHIFT;
-				p1->from.offset = SHIFT_AR | v<<7 | hi1.val.u.reg;
-				p1->from.reg = NREG;
+				p1->from.offset = SHIFT_AR | v<<7 | bh.val.u.reg;
 			} else {
-				//	MOVW	hi1>>v, ah
-				p1 = gins(AMOVW, &hi1, &ah);
+				//	MOVW	bh>>v, ah
+				p1 = gins(AMOVW, N, &ah);
 				p1->from.type = D_SHIFT;
-				p1->from.offset = SHIFT_LR | v<<7 | hi1.val.u.reg;
-				p1->from.reg = NREG;
+				p1->from.offset = SHIFT_LR | v<<7 | bh.val.u.reg;
 			}
-			break;
+			goto orsh_break;
 		}
-		fatal("cgen64 ORSH, !OLITERAL not implemented");
-
-//		// load value into DX:AX.
-//		gins(AMOVL, &lo1, &ax);
-//		gins(AMOVL, &hi1, &dx);
-
-//		// load shift value into register.
-//		// if high bits are set, zero value.
-//		p1 = P;
-//		if(is64(r->type)) {
-//			gins(ACMPL, &hi2, ncon(0));
-//			p1 = gbranch(AJNE, T);
-//			gins(AMOVL, &lo2, &cx);
-//		} else
-//			gins(AMOVL, r, &cx);
-
-//		// if shift count is >=64, zero or sign-extend value
-//		gins(ACMPL, &cx, ncon(64));
-//		p2 = gbranch(optoas(OLT, types[TUINT32]), T);
-//		if(p1 != P)
-//			patch(p1, pc);
-//		if(hi1.type->etype == TINT32) {
-//			gins(ASARL, ncon(31), &dx);
-//			gins(AMOVL, &dx, &ax);
-//		} else {
-//			gins(AXORL, &dx, &dx);
-//			gins(AXORL, &ax, &ax);
-//		}
-//		patch(p2, pc);
-
-//		// if shift count is >= 32, sign-extend hi.
-//		gins(ACMPL, &cx, ncon(32));
-//		p1 = gbranch(optoas(OLT, types[TUINT32]), T);
-//		gins(AMOVL, &dx, &ax);
-//		if(hi1.type->etype == TINT32) {
-//			gins(ASARL, &cx, &ax);	// SARL only uses bottom 5 bits of count
-//			gins(ASARL, ncon(31), &dx);
-//		} else {
-//			gins(ASHRL, &cx, &ax);
-//			gins(AXORL, &dx, &dx);
-//		}
-//		p2 = gbranch(AJMP, T);
-//		patch(p1, pc);
-
-//		// general shift
-//		p1 = gins(ASHRL, &cx, &ax);
-//		p1->from.index = D_DX;	// double-width shift
-//		p1->from.scale = 0;
-//		gins(optoas(ORSH, hi1.type), &cx, &dx);
-//		patch(p2, pc);
-//		break;
+
+		regalloc(&s, types[TUINT32], N);
+		regalloc(&creg, types[TUINT32], N);
+		gmove(r, &s);
+
+		// check if shift is < 32
+		nodconst(&n1, types[TUINT32], 32);
+		gmove(&n1, &creg);
+		gcmp(ACMP, &s, &creg);
+
+		//	MOVW.LT		bl>>s, al
+		p1 = gins(AMOVW, N, &al);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LR | s.val.u.reg << 8 | 1<<4 | bl.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		//	SUB.LT		creg, s
+		p1 = gins(ASUB, &creg, &s);
+		p1->scond = C_SCOND_LT;
+
+		//	OR.LT		bh<<(32-s), al, al
+		p1 = gins(AORR, N, &al);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LL | creg.val.u.reg << 8 | 1<<4 | bh.val.u.reg;
+		p1->reg = al.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		if(bh.type->etype == TINT32) {
+			//	MOVW	bh->s, ah
+			p1 = gins(AMOVW, N, &ah);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_AR | s.val.u.reg << 8 | 1<<4 | bh.val.u.reg;
+		} else {
+			//	MOVW	bh>>s, ah
+			p1 = gins(AMOVW, N, &ah);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_LR | s.val.u.reg << 8 | 1<<4 | bh.val.u.reg;
+		}
+		p1->scond = C_SCOND_LT;
+
+		//	BLT	end
+		p2 = gbranch(ABLT, T);
+
+		// check if shift is < 64
+		nodconst(&n1, types[TUINT32], 64);
+		gmove(&n1, &creg);
+		gcmp(ACMP, &s, &creg);
+
+		//	MOVW.LT		creg>>1, creg
+		p1 = gins(AMOVW, N, &creg);
+		p1->from.type = D_SHIFT;
+		p1->from.offset = SHIFT_LR | 1<<7 | creg.val.u.reg;
+		p1->scond = C_SCOND_LT;
+
+		//	SUB.LT		s, creg
+		p1 = gins(ASUB, &s, &creg);
+		p1->scond = C_SCOND_LT;
+
+		if(bh.type->etype == TINT32) {
+			//	MOVW	bh->(s-32), al
+			p1 = gins(AMOVW, N, &al);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_AR | s.val.u.reg <<8 | 1<<4 | bh.val.u.reg;
+			p1->scond = C_SCOND_LT;
+
+			//	MOVW	bh->31, ah
+			p1 = gins(AMOVW, N, &ah);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_AR | 31<<7 | bh.val.u.reg;
+			p1->scond = C_SCOND_LT;
+		} else {
+			//	MOVW	bh>>(v-32), al
+			p1 = gins(AMOVW, N, &al);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_LR | s.val.u.reg<<8 | 1<<4 | bh.val.u.reg;
+			p1->scond = C_SCOND_LT;
+
+			p1 = gins(AEOR, &ah, &ah);
+			p1->scond = C_SCOND_LT;
+		}
+
+		//	BLT	end
+		p3 = gbranch(ABLT, T);
+
+		// s >= 64
+		if(bh.type->etype == TINT32) {
+			//	MOVW	bh->31, al
+			p1 = gins(AMOVW, N, &al);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_AR | 31 << 7 | bh.val.u.reg;
+
+			//	MOVW	bh->31, ah
+			p1 = gins(AMOVW, N, &ah);
+			p1->from.type = D_SHIFT;
+			p1->from.offset = SHIFT_AR | 31 << 7 | bh.val.u.reg;
+		} else {
+			gins(AEOR, &al, &al);
+			gins(AEOR, &ah, &ah);
+		}
+
+		patch(p2, pc);
+		patch(p3, pc);
+		regfree(&s);
+		regfree(&creg);
+
+
+orsh_break:
+		regfree(&bl);
+		regfree(&bh);
+		break;
 
 	case OXOR:
 	case OAND:
@@ -444,10 +587,14 @@ cgen64(Node *n, Node *res)
 //			splitclean();
 //			goto out;
 //		}
+		regalloc(&n1, lo1.type, N);
 		gins(AMOVW, &lo1, &al);
 		gins(AMOVW, &hi1, &ah);
-		gins(optoas(n->op, lo1.type), &lo2, &al);
-		gins(optoas(n->op, lo1.type), &hi2, &ah);
+		gins(AMOVW, &lo2, &n1);
+		gins(optoas(n->op, lo1.type), &n1, &al);
+		gins(AMOVW, &hi2, &n1);
+		gins(optoas(n->op, lo1.type), &n1, &ah);
+		regfree(&n1);
 		break;
 	}
 	if(is64(r->type))

src/cmd/5g/gsubr.c

@@ -514,7 +514,7 @@ splitclean(void)
 void
 gmove(Node *f, Node *t)
 {
-	int a, ft, tt;
+	int a, ft, tt, fa, ta;
 	Type *cvt;
 	Node r1, r2, flo, fhi, tlo, thi, con;
 	Prog *p1;
@@ -526,9 +526,9 @@ gmove(Node *f, Node *t)
 	tt = simsimtype(t->type);
 	cvt = t->type;
 
-	// cannot have two integer memory operands;
+	// cannot have two memory operands;
 	// except 64-bit, which always copies via registers anyway.
-	if(isint[ft] && isint[tt] && !is64(f->type) && !is64(t->type) && ismem(f) && ismem(t))
+	if(!is64(f->type) && !is64(t->type) && ismem(f) && ismem(t))
 		goto hard;
 
 	// convert constant to desired type
@@ -538,10 +538,6 @@ gmove(Node *f, Node *t)
 			convconst(&con, t->type, &f->val);
 			break;
 
-		case TFLOAT32:
-			convconst(&con, types[TFLOAT64], &f->val);
-			break;
-
 		case TINT16:
 		case TINT8:
 			convconst(&con, types[TINT32], &f->val);
@@ -752,8 +748,10 @@ gmove(Node *f, Node *t)
 	case CASE(TFLOAT32, TUINT8):
 	case CASE(TFLOAT32, TUINT16):
 	case CASE(TFLOAT32, TUINT32):
+		fa = AMOVF;
 		a = AMOVFW;
-		break;
+		ta = AMOVW;
+		goto fltconv;
 
 	case CASE(TFLOAT64, TINT8):
 	case CASE(TFLOAT64, TINT16):
@@ -761,14 +759,14 @@ gmove(Node *f, Node *t)
 	case CASE(TFLOAT64, TUINT8):
 	case CASE(TFLOAT64, TUINT16):
 	case CASE(TFLOAT64, TUINT32):
+		fa = AMOVD;
 		a = AMOVDW;
-		break;
+		ta = AMOVW;
+		goto fltconv;
 
-	case CASE(TFLOAT32, TINT64):
 	case CASE(TFLOAT32, TUINT64):
-	case CASE(TFLOAT64, TINT64):
 	case CASE(TFLOAT64, TUINT64):
-		fatal("gmove TFLOAT, INT64 not implemented");
+		fatal("gmove TFLOAT, UINT64 not implemented");
 		return;
 
 	/*
@@ -780,8 +778,10 @@ gmove(Node *f, Node *t)
 	case CASE(TUINT8, TFLOAT32):
 	case CASE(TUINT16, TFLOAT32):
 	case CASE(TUINT32, TFLOAT32):
+		fa = AMOVW;
 		a = AMOVWF;
-		break;
+		ta = AMOVF;
+		goto fltconv;
 
 	case CASE(TINT8, TFLOAT64):
 	case CASE(TINT16, TFLOAT64):
@@ -789,14 +789,14 @@ gmove(Node *f, Node *t)
 	case CASE(TUINT8, TFLOAT64):
 	case CASE(TUINT16, TFLOAT64):
 	case CASE(TUINT32, TFLOAT64):
+		fa = AMOVW;
 		a = AMOVWD;
-		break;
+		ta = AMOVW;
+		goto fltconv;;
 
-	case CASE(TINT64, TFLOAT32):
-	case CASE(TINT64, TFLOAT64):
 	case CASE(TUINT64, TFLOAT32):
 	case CASE(TUINT64, TFLOAT64):
-		fatal("gmove INT64, TFLOAT not implemented");
+		fatal("gmove UINT64, TFLOAT not implemented");
 		return;
 
 
@@ -812,12 +812,20 @@ gmove(Node *f, Node *t)
 		break;
 
 	case CASE(TFLOAT32, TFLOAT64):
-		a = AMOVFD;
-		break;
+		regalloc(&r1, types[TFLOAT64], t);
+		gins(AMOVF, f, &r1);
+		gins(AMOVFD, &r1, &r1);
+		gins(AMOVD, &r1, t);
+		regfree(&r1);
+		return;
 
 	case CASE(TFLOAT64, TFLOAT32):
-		a = AMOVDF;
-		break;
+		regalloc(&r1, types[TFLOAT64], t);
+		gins(AMOVD, f, &r1);
+		gins(AMOVDF, &r1, &r1);
+		gins(AMOVF, &r1, t);
+		regfree(&r1);
+		return;
 	}
 
 	gins(a, f, t);
@@ -835,7 +843,7 @@ rdst:
 
 hard:
 	// requires register intermediate
-	regalloc(&r1, cvt, N);
+	regalloc(&r1, cvt, t);
 	gmove(f, &r1);
 	gmove(&r1, t);
 	regfree(&r1);
@@ -851,6 +859,16 @@ trunc64:
 	splitclean();
 	return;
 
+fltconv:
+	regalloc(&r1, types[ft], f);
+	regalloc(&r2, types[tt], t);
+	gins(fa, f, &r1);
+	gins(a, &r1, &r2);
+	gins(ta, &r2, t);
+	regfree(&r1);
+	regfree(&r2);
+	return;
+
 fatal:
 	// should not happen
 	fatal("gmove %N -> %N", f, t);

src/make-arm.bash

@@ -21,7 +21,7 @@ chmod +x $GOBIN/quietgcc
 
 # TODO(kaib): converge with normal build
 #for i in lib9 libbio libmach libregexp cmd pkg cmd/ebnflint cmd/godoc cmd/gofmt
-for i in lib9 libbio libmach libregexp cmd pkg/runtime pkg/sync pkg/once pkg/syscall pkg/os pkg/unicode pkg/utf8 pkg/bytes pkg/strings pkg/io pkg/malloc pkg/time
+for i in lib9 libbio libmach libregexp cmd pkg/runtime pkg/sync pkg/once pkg/syscall pkg/os pkg/unicode pkg/utf8 pkg/bytes pkg/strings pkg/io pkg/malloc pkg/time pkg/math pkg/strconv pkg/reflect pkg/fmt pkg/bufio
 #for i in lib9 libbio libmach libregexp cmd pkg/runtime pkg/sync pkg/once pkg/malloc pkg/sort pkg/unicode
 # pkg/hash
 # pkg/math

test/arm-pass.txt

@@ -9,7 +9,6 @@ bugs/bug169.go
 bugs/bug190.go
 bugs/bug193.go
 bugs/bug196.go
-bugs/bug198.go
 chan/perm.go
 char_lit.go
 cmp1.go
@@ -38,6 +37,8 @@ fixedbugs/bug006.go
 fixedbugs/bug007.go
 fixedbugs/bug008.go
 fixedbugs/bug009.go
+fixedbugs/bug010.go
+fixedbugs/bug011.go
 fixedbugs/bug012.go
 fixedbugs/bug013.go
 fixedbugs/bug014.go
@@ -62,6 +63,7 @@ fixedbugs/bug039.go
 fixedbugs/bug040.go
 fixedbugs/bug045.go
 fixedbugs/bug046.go
+fixedbugs/bug047.go
 fixedbugs/bug048.go
 fixedbugs/bug049.go
 fixedbugs/bug050.go
@@ -193,6 +195,7 @@ fixedbugs/bug192.go
 fixedbugs/bug194.go
 fixedbugs/bug195.go
 fixedbugs/bug197.go
+fixedbugs/bug198.go
 fixedbugs/bug199.go
 fixedbugs/bug200.go
 fixedbugs/bug201.go
@@ -201,7 +204,11 @@ fixedbugs/bug203.go
 fixedbugs/bug204.go
 fixedbugs/bug205.go
 fixedbugs/bug206.go
+fixedbugs/bug208.go
+fixedbugs/bug209.go
+float_lit.go
 for.go
+func.go
 func1.go
 func2.go
 func3.go
@@ -247,6 +254,7 @@ ken/ptrvar.go
 ken/rob1.go
 ken/rob2.go
 ken/robfor.go
+ken/robfunc.go
 ken/robif.go
 ken/shift.go
 ken/simpbool.go
@@ -259,10 +267,12 @@ method.go
 method1.go
 method2.go
 method3.go
+named.go
 named1.go
 nil.go
 parentype.go
 printbig.go
+rename.go
 rename1.go
 sieve.go
 sigchld.go
@@ -271,4 +281,5 @@ string_lit.go
 switch.go
 switch1.go
 test0.go
+typeswitch.go
 varinit.go