%%

#
# inssel-long32.brg: burg file for integer instructions on 32bit architectures
#
# Author:
#   Dietmar Maurer (dietmar@ximian.com)
#
# (C) 2002 Ximian, Inc.
#

#
# 32 bit rules
#

#
# basic alu operations
#

reg: CEE_AND (reg, reg),
reg: CEE_OR (reg, reg),
reg: CEE_XOR (reg, reg),
reg: CEE_ADD (reg, reg),
reg: CEE_SUB (reg, reg),
reg: CEE_MUL (reg, reg),
reg: CEE_MUL_OVF (reg, reg),
reg: CEE_MUL_OVF_UN (reg, reg),
reg: CEE_DIV (reg, reg),
reg: CEE_DIV_UN (reg, reg),
reg: CEE_REM (reg, reg),
reg: CEE_REM_UN (reg, reg),
reg: CEE_SHL (reg, reg),
reg: CEE_SHR (reg, reg),
reg: CEE_SHR_UN (reg, reg) {
	MONO_EMIT_BIALU (s, tree, tree->opcode, state->reg1, state->left->reg1, state->right->reg1);
}

reg: CEE_NEG (reg),
reg: CEE_NOT (reg) {
	MONO_EMIT_UNALU (s, tree, tree->opcode, state->reg1, state->left->reg1);
}


reg: CEE_AND (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_AND_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_OR (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_OR_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_XOR (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_XOR_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_ADD (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_ADD_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_SUB (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_SUB_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_MUL (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_MUL_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_SHL (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_SHL_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_SHR (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_SHR_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_SHR_UN (reg, OP_ICONST) {
	MONO_EMIT_BIALU_IMM (s, tree, OP_SHR_UN_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
}

reg: CEE_ADD_OVF (reg, reg) {
	MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_COND_EXC (s, OV, "OverflowException");
}

reg: CEE_ADD_OVF_UN (reg, reg) {
	MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_COND_EXC (s, C, "OverflowException");
}

reg: CEE_SUB (reg, CEE_LDIND_I4 (OP_REGVAR)) {
	MONO_EMIT_BIALU (s, tree, tree->opcode, state->reg1, state->left->reg1, state->right->left->tree->dreg);
}

reg: CEE_SUB_OVF (reg, reg) {
	MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_COND_EXC (s, OV, "OverflowException");
}

reg: CEE_SUB_OVF_UN (reg, reg) {
	MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_COND_EXC (s, C, "OverflowException");
}

reg: CEE_DIV (reg, OP_ICONST) {
	int p2 = mono_is_power_of_two (state->right->tree->inst_c0);
	int r = mono_regstate_next_int (s->rs);
	if (p2 <= 0) {
		MONO_EMIT_NEW_ICONST (s, r, state->right->tree->inst_c0);
		MONO_EMIT_BIALU (s, tree, CEE_DIV, state->reg1, state->left->reg1, r);
	} else if (p2 == 1) {
		int r2 = mono_regstate_next_int (s->rs);
		MONO_EMIT_NEW_BIALU_IMM (s, OP_SHR_UN_IMM, r, state->left->reg1, 31);
		MONO_EMIT_NEW_BIALU (s, CEE_ADD, r2, r, state->left->reg1);
		MONO_EMIT_NEW_BIALU_IMM (s, OP_SHR_IMM, state->reg1, r2, 1);
	} else {
		int r2 = mono_regstate_next_int (s->rs);
		int r3 = mono_regstate_next_int (s->rs);
		int r4 = mono_regstate_next_int (s->rs);
		MONO_EMIT_NEW_BIALU_IMM (s, OP_SHR_IMM, r2, state->left->reg1, 31);
		MONO_EMIT_NEW_BIALU_IMM (s, OP_SHR_UN_IMM, r3, r2, (32 - p2));
		MONO_EMIT_NEW_BIALU (s, CEE_ADD, r4, r3, state->left->reg1);
		MONO_EMIT_NEW_BIALU_IMM (s, OP_SHR_IMM, state->reg1, r4, p2);
	}
}

cflags: OP_COMPARE (reg, reg) {
	tree->sreg1 = state->left->reg1;
	tree->sreg2 = state->right->reg1;
	mono_bblock_add_inst (s->cbb, tree);
}

cflags: OP_COMPARE (CEE_LDIND_REF (OP_REGVAR), reg),
cflags: OP_COMPARE (CEE_LDIND_I (OP_REGVAR), reg),
cflags: OP_COMPARE (CEE_LDIND_I4 (OP_REGVAR), reg),
cflags: OP_COMPARE (CEE_LDIND_U4 (OP_REGVAR), reg) {
	tree->sreg1 = state->left->left->tree->dreg;
	tree->sreg2 = state->right->reg1;
	mono_bblock_add_inst (s->cbb, tree);
}

cflags: OP_COMPARE (CEE_LDIND_REF (OP_REGVAR), CEE_LDIND_REF (OP_REGVAR)),
cflags: OP_COMPARE (CEE_LDIND_I (OP_REGVAR), CEE_LDIND_I (OP_REGVAR)),
cflags: OP_COMPARE (CEE_LDIND_I4 (OP_REGVAR), CEE_LDIND_I4 (OP_REGVAR)),
cflags: OP_COMPARE (CEE_LDIND_U4 (OP_REGVAR), CEE_LDIND_U4 (OP_REGVAR)) {
	tree->sreg1 = state->left->left->tree->dreg;
	tree->sreg2 = state->right->left->tree->dreg;
	mono_bblock_add_inst (s->cbb, tree);
}

cflags: OP_COMPARE (CEE_LDIND_REF (OP_REGVAR), OP_ICONST),
cflags: OP_COMPARE (CEE_LDIND_I (OP_REGVAR), OP_ICONST),
cflags: OP_COMPARE (CEE_LDIND_I4 (OP_REGVAR), OP_ICONST),
cflags: OP_COMPARE (CEE_LDIND_U4 (OP_REGVAR), OP_ICONST) {
	tree->opcode = OP_COMPARE_IMM;
	tree->sreg1 = state->left->left->tree->dreg;
	tree->inst_imm = state->right->tree->inst_c0;
	mono_bblock_add_inst (s->cbb, tree);
}

cflags: OP_COMPARE (reg, OP_ICONST) {
	tree->opcode = OP_COMPARE_IMM;
	tree->sreg1 = state->left->reg1;
	tree->inst_imm = state->right->tree->inst_c0;
	mono_bblock_add_inst (s->cbb, tree);
}

stmt: CEE_BNE_UN (cflags),
stmt: CEE_BEQ (cflags),
stmt: CEE_BLT (cflags),
stmt: CEE_BLT_UN (cflags),
stmt: CEE_BGT (cflags),
stmt: CEE_BGT_UN (cflags),
stmt: CEE_BGE  (cflags),
stmt: CEE_BGE_UN (cflags),
stmt: CEE_BLE  (cflags),
stmt: CEE_BLE_UN (cflags) {
	mono_bblock_add_inst (s->cbb, tree);
}

reg: OP_CEQ (cflags),
reg: OP_CLT (cflags),
reg: OP_CLT_UN (cflags),
reg: OP_CGT (cflags),
reg: OP_CGT_UN (cflags) {	
	tree->dreg = state->reg1;
	mono_bblock_add_inst (s->cbb, tree);
}

#
# 64 bit rules
#

#
# We use a new non-terminal called "lreg" for 64bit registers, and
# emulate lreg with 2 32bit registers.
#

stmt: CEE_POP (lreg) {
	/* do nothing */
}

i8con: CEE_CONV_I8 (OP_ICONST) "0" {
       int data = state->left->tree->inst_c0;
	tree->opcode = OP_I8CONST;
	tree->inst_ls_word = data;
	if (data < 0)
		tree->inst_ms_word = -1;
	else
		tree->inst_ms_word = 0;
}

i8con: CEE_CONV_U8 (OP_ICONST) "0" {
	int data = state->left->tree->inst_c0;
	tree->opcode = OP_I8CONST;
	tree->inst_ls_word = data;
	tree->inst_ms_word = 0;
}

i8con: OP_I8CONST "0"

lreg: OP_ICONST {
       int data = state->tree->inst_c0;

       MONO_EMIT_NEW_ICONST (s, state->reg1, data);

       if (data >= 0)
               MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
       else 
               MONO_EMIT_NEW_ICONST (s, state->reg2, -1);
}

lreg: OP_I8CONST {
	MONO_EMIT_NEW_ICONST (s, state->reg1, tree->inst_ls_word);
	MONO_EMIT_NEW_ICONST (s, state->reg2, tree->inst_ms_word);
}

lreg: CEE_LDIND_I8 (base) {
	MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADI4_MEMBASE, state->reg1, 
				       state->left->tree->inst_basereg, state->left->tree->inst_offset + MINI_LS_WORD_OFFSET);
	MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADI4_MEMBASE, state->reg2, 
				       state->left->tree->inst_basereg, state->left->tree->inst_offset + MINI_MS_WORD_OFFSET);
}

stmt: CEE_STIND_I8 (base, lreg) {
	MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STOREI4_MEMBASE_REG, state->left->tree->inst_basereg,
				     state->left->tree->inst_offset + MINI_MS_WORD_OFFSET, state->right->reg2);
	MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STOREI4_MEMBASE_REG, state->left->tree->inst_basereg,
				     state->left->tree->inst_offset + MINI_LS_WORD_OFFSET, state->right->reg1);
}

stmt: CEE_STIND_I8 (base, i8con) {
	MONO_EMIT_NEW_STORE_MEMBASE_IMM (s, OP_STOREI4_MEMBASE_IMM, state->left->tree->inst_basereg,
					 state->left->tree->inst_offset + MINI_MS_WORD_OFFSET, state->right->tree->inst_ms_word);
	MONO_EMIT_NEW_STORE_MEMBASE_IMM (s, OP_STOREI4_MEMBASE_IMM, state->left->tree->inst_basereg,
					 state->left->tree->inst_offset + MINI_LS_WORD_OFFSET, state->right->tree->inst_ls_word);
}

lreg: OP_BIGMUL (reg, reg),
lreg: OP_BIGMUL_UN (reg, reg) {
	MONO_EMIT_NEW_BIALU (s, tree->opcode, state->reg1, state->left->reg1, state->right->reg1); 
}

lreg: OP_LONG_SHRUN_32 (lreg) {
	/* just move the upper half to the lower and zero the high word */
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg2);
     	MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
}

reg: OP_LCONV_TO_I4 (OP_LONG_SHRUN_32 (lreg)),
reg: OP_LCONV_TO_U4 (OP_LONG_SHRUN_32 (lreg)) {
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->left->reg2);
}


lreg: OP_LONG_SHRUN_32 (CEE_LDIND_I8 (base)) {
	/* just move the upper half to the lower and zero the high word */
	MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADI4_MEMBASE, state->reg1, 
	                               state->left->left->tree->inst_basereg, state->left->left->tree->inst_offset + MINI_MS_WORD_OFFSET);
     	MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
}

reg: OP_LCONV_TO_I4 (OP_LONG_SHRUN_32 (CEE_LDIND_I8 (base))),
reg: OP_LCONV_TO_U4 (OP_LONG_SHRUN_32 (CEE_LDIND_I8 (base))) {
	/* just move the upper half to the lower and zero the high word */
	MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADI4_MEMBASE, state->reg1, 
	                               state->left->left->left->tree->inst_basereg,
				       state->left->left->left->tree->inst_offset + MINI_MS_WORD_OFFSET);
}

lreg: OP_LADD (lreg, lreg) {
	MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_BIALU (s, tree, OP_ADC, state->reg2, state->left->reg2, state->right->reg2);
}

lreg: OP_LADD_OVF (lreg, lreg) {
	/* ADC sets the condition code */
	MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_BIALU (s, OP_ADC, state->reg2, state->left->reg2, state->right->reg2);
	MONO_EMIT_NEW_COND_EXC (s, OV, "OverflowException");
}

lreg: OP_LADD_OVF_UN (lreg, lreg) {
	/* ADC sets the condition code */
	MONO_EMIT_NEW_BIALU (s, OP_ADDCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_BIALU (s, OP_ADC, state->reg2, state->left->reg2, state->right->reg2);
	MONO_EMIT_NEW_COND_EXC (s, C, "OverflowException");
}

lreg: OP_LADD (lreg, i8con) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_ADDCC_IMM, state->reg1, state->left->reg1, state->right->tree->inst_ls_word);
	MONO_EMIT_BIALU_IMM (s, tree, OP_ADC_IMM, state->reg2, state->left->reg2, state->right->tree->inst_ms_word);
}

lreg: OP_LSUB (lreg, lreg) {
	MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_BIALU (s, tree, OP_SBB, state->reg2, state->left->reg2, state->right->reg2);
}

lreg: OP_LSUB (lreg, i8con) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_SUBCC_IMM, state->reg1, state->left->reg1, state->right->tree->inst_ls_word);
	MONO_EMIT_BIALU_IMM (s, tree, OP_SBB_IMM, state->reg2, state->left->reg2, state->right->tree->inst_ms_word);
}

lreg: OP_LSUB_OVF (lreg, lreg) {
	/* SBB sets the condition code */
	MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_BIALU (s, OP_SBB, state->reg2, state->left->reg2, state->right->reg2);
	MONO_EMIT_NEW_COND_EXC (s, OV, "OverflowException");
}

lreg: OP_LSUB_OVF_UN (lreg, lreg) {
	/* SBB sets the condition code */
	MONO_EMIT_NEW_BIALU (s, OP_SUBCC, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_NEW_BIALU (s, OP_SBB, state->reg2, state->left->reg2, state->right->reg2);
	MONO_EMIT_NEW_COND_EXC (s, C, "OverflowException");
}

lreg: OP_LAND (lreg, lreg) {	
	MONO_EMIT_NEW_BIALU (s, CEE_AND, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_BIALU (s, tree, CEE_AND, state->reg2, state->left->reg2, state->right->reg2);
}

lreg: OP_LAND (lreg, i8con) {	
	MONO_EMIT_NEW_BIALU_IMM (s, OP_AND_IMM, state->reg1, state->left->reg1, state->right->tree->inst_ls_word);
	MONO_EMIT_BIALU_IMM (s, tree, OP_AND_IMM, state->reg2, state->left->reg2, state->right->tree->inst_ms_word);
}

lreg: OP_LOR (lreg, lreg) {
	MONO_EMIT_NEW_BIALU (s, CEE_OR, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_BIALU (s, tree, CEE_OR, state->reg2, state->left->reg2, state->right->reg2);
}

lreg: OP_LOR (lreg, i8con) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_OR_IMM, state->reg1, state->left->reg1, state->right->tree->inst_ls_word);
	MONO_EMIT_BIALU_IMM (s, tree, OP_OR_IMM, state->reg2, state->left->reg2, state->right->tree->inst_ms_word);
}

lreg: OP_LXOR (lreg, lreg) {
	MONO_EMIT_NEW_BIALU (s, CEE_XOR, state->reg1, state->left->reg1, state->right->reg1);
	MONO_EMIT_BIALU (s, tree, CEE_XOR, state->reg2, state->left->reg2, state->right->reg2);
}

lreg: OP_LXOR (lreg, i8con) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_XOR_IMM, state->reg1, state->left->reg1, state->right->tree->inst_ls_word);
	MONO_EMIT_BIALU_IMM (s, tree, OP_XOR_IMM, state->reg2, state->left->reg2, state->right->tree->inst_ms_word);
}

lreg: OP_LNOT (lreg) {
	MONO_EMIT_NEW_UNALU (s, CEE_NOT, state->reg1, state->left->reg1);
	MONO_EMIT_UNALU (s, tree, CEE_NOT, state->reg2, state->left->reg2);
}

lreg: OP_LNEG (lreg) "4" {
	MONO_EMIT_NEW_UNALU (s, CEE_NOT, state->reg1, state->left->reg1);
	MONO_EMIT_NEW_UNALU (s, CEE_NOT, state->reg2, state->left->reg2);
	/* ADC sets the condition codes */
	MONO_EMIT_NEW_BIALU_IMM (s, OP_ADC_IMM, state->reg1, state->reg1, 1);
	MONO_EMIT_BIALU_IMM (s, tree, OP_ADC_IMM, state->reg2, state->reg2, 0);
}

reg: OP_CEQ (OP_LCOMPARE (lreg, lreg)) {	
	MonoInst *word_differs;
	
	MONO_NEW_LABEL (s, word_differs);

     	MONO_EMIT_NEW_ICONST (s, state->reg1, 0);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BNE_UN, word_differs);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BNE_UN, word_differs);
     	MONO_EMIT_NEW_ICONST (s, state->reg1, 1);
	
	mono_bblock_add_inst (s->cbb, word_differs);
}

reg: OP_CLT (OP_LCOMPARE (lreg, lreg)) {	
	MonoInst *set_to_0, *set_to_1;
	
	MONO_NEW_LABEL (s, set_to_0);
	MONO_NEW_LABEL (s, set_to_1);

     	MONO_EMIT_NEW_ICONST (s, state->reg1, 0);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGT, set_to_0);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BNE_UN, set_to_1);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGE_UN, set_to_0);
	mono_bblock_add_inst (s->cbb, set_to_1);
     	MONO_EMIT_NEW_ICONST (s, state->reg1, 1);
	mono_bblock_add_inst (s->cbb, set_to_0);
}	

reg: OP_CLT_UN (OP_LCOMPARE (lreg, lreg)) {	
	MonoInst *set_to_0, *set_to_1;
	
	MONO_NEW_LABEL (s, set_to_0);
	MONO_NEW_LABEL (s, set_to_1);

     	MONO_EMIT_NEW_ICONST (s, state->reg1, 0);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGT_UN, set_to_0);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BNE_UN, set_to_1);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGE_UN, set_to_0);
	mono_bblock_add_inst (s->cbb, set_to_1);
     	MONO_EMIT_NEW_ICONST (s, state->reg1, 1);
	mono_bblock_add_inst (s->cbb, set_to_0);
}	

reg: OP_CGT (OP_LCOMPARE (lreg, lreg)) {	
	MonoInst *set_to_0, *set_to_1;
	
	MONO_NEW_LABEL (s, set_to_0);
	MONO_NEW_LABEL (s, set_to_1);

     	MONO_EMIT_NEW_ICONST (s, state->reg1, 0);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->right->reg2, state->left->left->reg2);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGT, set_to_0);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BNE_UN, set_to_1);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->right->reg1, state->left->left->reg1);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGE_UN, set_to_0);
	mono_bblock_add_inst (s->cbb, set_to_1);
     	MONO_EMIT_NEW_ICONST (s, state->reg1, 1);
	mono_bblock_add_inst (s->cbb, set_to_0);
}	

reg: OP_CGT_UN (OP_LCOMPARE (lreg, lreg)) {	
	MonoInst *set_to_0, *set_to_1;
	
	MONO_NEW_LABEL (s, set_to_0);
	MONO_NEW_LABEL (s, set_to_1);

     	MONO_EMIT_NEW_ICONST (s, state->reg1, 0);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->right->reg2, state->left->left->reg2);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGT_UN, set_to_0);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BNE_UN, set_to_1);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->right->reg1, state->left->left->reg1);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BGE_UN, set_to_0);
	mono_bblock_add_inst (s->cbb, set_to_1);
     	MONO_EMIT_NEW_ICONST (s, state->reg1, 1);
	mono_bblock_add_inst (s->cbb, set_to_0);
}	

stmt: CEE_BNE_UN (OP_LCOMPARE (lreg, lreg)) {
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	mono_bblock_add_inst (s->cbb, tree);
}

stmt: CEE_BNE_UN (OP_LCOMPARE (lreg, i8con)) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	mono_bblock_add_inst (s->cbb, tree);
}

stmt: CEE_BEQ (OP_LCOMPARE (lreg, lreg)) {
	
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	mono_bblock_add_inst (s->cbb, tree);
}

stmt: CEE_BEQ (OP_LCOMPARE (lreg, i8con)) {
	
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	mono_bblock_add_inst (s->cbb, tree);
}

stmt: CEE_BLE (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLE_UN, tree->inst_true_bb);
}

stmt: CEE_BLE (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLE_UN, tree->inst_true_bb);
}

stmt: CEE_BLE_UN (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLE_UN, tree->inst_true_bb);
}

stmt: CEE_BLE_UN (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLE_UN, tree->inst_true_bb);
}

stmt: CEE_BGE (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGE_UN, tree->inst_true_bb);
}

stmt: CEE_BGE (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGE_UN, tree->inst_true_bb);
}

stmt: CEE_BGE_UN (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGE_UN, tree->inst_true_bb);
}

stmt: CEE_BGE_UN (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGE_UN, tree->inst_true_bb);
}

stmt: CEE_BLT (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
}

stmt: CEE_BLT (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
}

stmt: CEE_BLT_UN (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
}

stmt: CEE_BLT_UN (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BLT_UN, tree->inst_true_bb);
}

stmt: CEE_BGT (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
}

stmt: CEE_BGT (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
}

stmt: CEE_BGT_UN (OP_LCOMPARE (lreg, lreg)) {

	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg2, state->left->right->reg2);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, state->left->left->reg1, state->left->right->reg1);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
}

stmt: CEE_BGT_UN (OP_LCOMPARE (lreg, i8con)) {

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg2, state->left->right->tree->inst_ms_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BNE_UN, tree->inst_false_bb);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->left->reg1, state->left->right->tree->inst_ls_word);
	MONO_EMIT_NEW_BRANCH_BLOCK (s, CEE_BGT_UN, tree->inst_true_bb);
}

lreg: CEE_CONV_I8 (OP_ICONST) {
	int data = state->left->tree->inst_c0;

       MONO_EMIT_NEW_ICONST (s, state->reg1, data);

       if (data >= 0)
               MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
       else 
               MONO_EMIT_NEW_ICONST (s, state->reg2, -1);
}

lreg: CEE_CONV_I8 (reg) {
	int tmpreg = mono_regstate_next_int (s->rs);
	
	/* branchless code:
	 * low = reg;
	 * tmp = low > -1 ? 1: 0;
	 * high = tmp - 1; if low is zero or pos high becomes 0, else -1
	 */
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->reg1, -1);
	tree->dreg = tmpreg;
	tree->opcode = OP_CGT;
	mono_bblock_add_inst (s->cbb, tree);
	MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, state->reg2, tmpreg, 1);
}

lreg: CEE_CONV_U8 (reg) {
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
}

lreg: CEE_CONV_OVF_U8 (reg) {
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 0);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");
	MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

lreg: CEE_CONV_OVF_I8 (reg) {
	/* a signed 32 bit num always fits in a signed 64 bit one */
	MONO_EMIT_NEW_BIALU_IMM (s, OP_SHR_IMM, state->reg2, state->left->reg1, 31);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

lreg: CEE_CONV_OVF_I8_UN (reg) {
	/* an unsigned 32 bit num always fits in a signed 64 bit one */
	MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

lreg: CEE_CONV_OVF_U8_UN (reg) {
	MONO_EMIT_NEW_ICONST (s, state->reg2, 0);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

freg: OP_LCONV_TO_R_UN (lreg) {
	MONO_EMIT_BIALU (s, tree, tree->opcode, state->reg1, state->left->reg1, state->left->reg2);
}

lreg: OP_FCONV_TO_I8 (freg) {
	MONO_EMIT_UNALU (s, tree, tree->opcode, state->reg1, state->left->reg1);
}

lreg: OP_FCONV_TO_U8 (freg) {
	MONO_EMIT_UNALU (s, tree, tree->opcode, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_I4 (i8con) {
     	MONO_EMIT_NEW_ICONST (s, state->reg1, state->left->tree->inst_ls_word);
}

reg: OP_LCONV_TO_I4 (lreg),
reg: OP_LCONV_TO_U4 (lreg) {
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_I4 (CEE_LDIND_I8 (base)),
reg: OP_LCONV_TO_U4 (CEE_LDIND_I8 (base)) {
	MONO_EMIT_LOAD_MEMBASE_OP (s, tree, OP_LOADI4_MEMBASE, state->reg1, 
				   state->left->left->tree->inst_basereg, 
				   state->left->left->tree->inst_offset + MINI_LS_WORD_OFFSET);
}

lreg: OP_LCONV_TO_U8 (lreg),
lreg: OP_LCONV_TO_I8 (lreg) {
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg2, state->left->reg2);
}

reg: OP_LCONV_TO_U (lreg),
reg: OP_LCONV_TO_I (lreg) {
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_I1 (lreg) {
	MONO_EMIT_UNALU (s, tree, CEE_CONV_I1, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_U1 (lreg) {
	MONO_EMIT_UNALU (s, tree, CEE_CONV_U1, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_I2 (lreg) {
	MONO_EMIT_UNALU (s, tree, CEE_CONV_I2, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_U2 (lreg) {
	MONO_EMIT_UNALU (s, tree, CEE_CONV_U2, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_I1_UN (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");

	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 127);
	MONO_EMIT_NEW_COND_EXC (s, GT, "OverflowException");
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, -128);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");
	MONO_EMIT_UNALU (s, tree, CEE_CONV_I1, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_I1 (lreg) {
	MonoInst *is_negative, *end_label;

	MONO_NEW_LABEL (s, is_negative);
	MONO_NEW_LABEL (s, end_label);

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, GT, "OverflowException");
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, -1);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BLT, is_negative);

	/* Positive */
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 127);
	MONO_EMIT_NEW_COND_EXC (s, GT_UN, "OverflowException");
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BR, end_label);

	/* Negative */
	mono_bblock_add_inst (s->cbb, is_negative);
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, -128);
	MONO_EMIT_NEW_COND_EXC (s, LT_UN, "OverflowException");
	mono_bblock_add_inst (s->cbb, end_label);

	MONO_EMIT_UNALU (s, tree, CEE_CONV_I1, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_U1_UN (lreg),
reg: OP_LCONV_TO_OVF_U1 (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");

	/* probe value to be within 0 to 255 */
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 255);
	MONO_EMIT_NEW_COND_EXC (s, GT_UN, "OverflowException");
	MONO_EMIT_BIALU_IMM (s, tree, OP_AND_IMM, state->reg1, state->left->reg1, 0xff);
}

reg: OP_LCONV_TO_OVF_I2 (lreg) {
	MonoInst *is_negative, *end_label;

	MONO_NEW_LABEL (s, is_negative);
	MONO_NEW_LABEL (s, end_label);

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, GT, "OverflowException");
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, -1);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");

	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BLT, is_negative);

	/* Positive */
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 32767);
	MONO_EMIT_NEW_COND_EXC (s, GT_UN, "OverflowException");
	MONO_EMIT_NEW_BRANCH_LABEL (s, CEE_BR, end_label);

	/* Negative */
	mono_bblock_add_inst (s->cbb, is_negative);
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, -32768);
	MONO_EMIT_NEW_COND_EXC (s, LT_UN, "OverflowException");
	mono_bblock_add_inst (s->cbb, end_label);

	MONO_EMIT_UNALU (s, tree, CEE_CONV_I2, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_I2_UN (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");

	/* Probe value to be within -32768 and 32767 */
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 32767);
	MONO_EMIT_NEW_COND_EXC (s, GT, "OverflowException");
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, -32768);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");
	MONO_EMIT_UNALU (s, tree, CEE_CONV_I2, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_U2_UN (lreg),
reg: OP_LCONV_TO_OVF_U2 (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");

	/* Probe value to be within 0 and 65535 */
	MONO_EMIT_NEW_COMPARE_IMM (s, state->left->reg1, 0xffff);
	MONO_EMIT_NEW_COND_EXC (s, GT_UN, "OverflowException");
	MONO_EMIT_BIALU_IMM (s, tree, OP_AND_IMM, state->reg1, state->left->reg1, 0xffff);
}


reg: OP_LCONV_TO_OVF_U4_UN (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_I_UN (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_U4 (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_I (lreg) {
	tree->dreg = state->reg1;
	tree->sreg1 = state->left->reg1;
	tree->sreg2 = state->left->reg2;
	mono_bblock_add_inst (s->cbb, tree);
}

reg: OP_LCONV_TO_OVF_I4_UN (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, NE_UN, "OverflowException");
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg1, 0);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
}

reg: OP_LCONV_TO_OVF_I4 (lreg) {
	tree->dreg = state->reg1;
	tree->sreg1 = state->left->reg1;
	tree->sreg2 = state->left->reg2;
	tree->opcode = OP_LCONV_TO_OVF_I;
	mono_bblock_add_inst (s->cbb, tree);
}

lreg: OP_LCONV_TO_OVF_I8_UN (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");

	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg2, state->left->reg2);
}

lreg: OP_LCONV_TO_OVF_U8 (lreg) {
	MONO_EMIT_NEW_BIALU_IMM (s, OP_COMPARE_IMM, -1, state->left->reg2, 0);
	MONO_EMIT_NEW_COND_EXC (s, LT, "OverflowException");

	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg2, state->left->reg2);
}

lreg: OP_LCONV_TO_OVF_I8 (lreg) {
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg2, state->left->reg2);
}

lreg: OP_LCONV_TO_OVF_U8_UN (lreg) {
	MONO_EMIT_NEW_UNALU (s, OP_MOVE, state->reg1, state->left->reg1);
	MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg2, state->left->reg2);
}

lreg: OP_LCALLVIRT (reg) {
	mini_emit_virtual_call (s, state, tree, OP_LCALL, OP_LCALL_MEMBASE);
}

lreg: OP_LCALL {
	tree->dreg = state->reg1;
	mono_bblock_add_inst (s->cbb, tree);
}

lreg: OP_LCALL_REG (reg) {
	tree->sreg1 = state->left->reg1;
	tree->dreg = state->reg1;
	mono_bblock_add_inst (s->cbb, tree);
}

lreg: OP_LCALL_REG (OP_ICONST) {
	tree->opcode = OP_LCALL;
	((MonoCallInst*)tree)->fptr = state->left->tree->inst_p0;
	tree->dreg = state->reg1;
	mono_bblock_add_inst (s->cbb, tree);
}

%%