500-loop.patch

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

--- gcc/gcc/loop.c	14 Feb 2004 14:46:03 -0000	1.488.2.3
+++ gcc/gcc/loop.c	28 Apr 2004 22:02:53 -0000
@@ -929,6 +929,7 @@
 			  || (! (GET_CODE (SET_SRC (set)) == REG
 				 && (REGNO (SET_SRC (set))
 				     < FIRST_PSEUDO_REGISTER))))
+		      && regno >= FIRST_PSEUDO_REGISTER 
 		      /* This test is not redundant; SET_SRC (set) might be
 			 a call-clobbered register and the life of REGNO
 			 might span a call.  */