[mono][interp] Expand compare + brfalse/brtrue with single conditional branch opcode (#80046)

* Add integer opcodes

* Add floating-point opcodes

* Check if local_ref_count is 1

Author: kotlarmilos

src/mono/mono/mini/interp/transform.c

@@ -9823,20 +9823,42 @@ interp_super_instructions (TransformData *td)
 					gboolean negate = opcode == MINT_BRFALSE_I4;
 					int cond_sreg = ins->sregs [0];
 					InterpInst *def = td->locals [cond_sreg].def;
-					if (def != NULL) {
+					if (def != NULL && local_ref_count [cond_sreg] == 1) {
 						int replace_opcode = -1;
 						switch (def->opcode) {
 							case MINT_CEQ_I4: replace_opcode = negate ? MINT_BNE_UN_I4 : MINT_BEQ_I4; break;
 							case MINT_CEQ_I8: replace_opcode = negate ? MINT_BNE_UN_I8 : MINT_BEQ_I8; break;
+							case MINT_CGT_I4: replace_opcode = negate ? MINT_BLE_I4 : MINT_BGT_I4; break;
+							case MINT_CGT_I8: replace_opcode = negate ? MINT_BLE_I8 : MINT_BGT_I8; break;
+							case MINT_CLT_I4: replace_opcode = negate ? MINT_BGE_I4 : MINT_BLT_I4; break;
+							case MINT_CLT_I8: replace_opcode = negate ? MINT_BGE_I8 : MINT_BLT_I8; break;
+							case MINT_CGT_UN_I4: replace_opcode = negate ? MINT_BLE_UN_I4 : MINT_BGT_UN_I4; break;
+							case MINT_CGT_UN_I8: replace_opcode = negate ? MINT_BLE_UN_I8 : MINT_BGT_UN_I8; break;
+							case MINT_CLT_UN_I4: replace_opcode = negate ? MINT_BGE_UN_I4 : MINT_BLT_UN_I4; break;
+							case MINT_CLT_UN_I8: replace_opcode = negate ? MINT_BGE_UN_I8 : MINT_BLT_UN_I8; break;
+							case MINT_CEQ_R4: replace_opcode = negate ? MINT_BNE_UN_R4 : MINT_BEQ_R4; break;
+							case MINT_CEQ_R8: replace_opcode = negate ? MINT_BNE_UN_R8 : MINT_BEQ_R8; break;
+							case MINT_CGT_R4: replace_opcode = negate ? MINT_BLE_UN_R4 : MINT_BGT_R4; break;
+							case MINT_CGT_R8: replace_opcode = negate ? MINT_BLE_UN_R8 : MINT_BGT_R8; break;
+							case MINT_CLT_R4: replace_opcode = negate ? MINT_BGE_UN_R4 : MINT_BLT_R4; break;
+							case MINT_CLT_R8: replace_opcode = negate ? MINT_BGE_UN_R8 : MINT_BLT_R8; break;
+							case MINT_CGT_UN_R4: replace_opcode = negate ? MINT_BLE_R4 : MINT_BGT_UN_R4; break;
+							case MINT_CGT_UN_R8: replace_opcode = negate ? MINT_BLE_R8 : MINT_BGT_UN_R8; break;
+							case MINT_CLT_UN_R4: replace_opcode = negate ? MINT_BGE_R4 : MINT_BLT_UN_R4; break;
+							case MINT_CLT_UN_R8: replace_opcode = negate ? MINT_BGE_R8 : MINT_BLT_UN_R8; break;
+							case MINT_CEQ0_I4: replace_opcode = negate ? MINT_BRTRUE_I4 : MINT_BRFALSE_I4; break; // If def->opcode is MINT_CEQ0_I4 ins->opcode is inverted
 							// Add more opcodes
 							default:
 								break;
 						}
 						if (replace_opcode != -1) {
 							ins->opcode = replace_opcode;
 							ins->sregs [0] = def->sregs [0];
-							ins->sregs [1] = def->sregs [1];
+							if (def->opcode != MINT_CEQ0_I4)
+								ins->sregs [1] = def->sregs [1];
 							interp_clear_ins (def);
+							local_ref_count [cond_sreg]--;
+							mono_interp_stats.super_instructions++;
 							if (td->verbose_level) {
 								g_print ("superins: ");
 								dump_interp_inst (ins);