From: sandeep <sandeep@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Thu, 15 Nov 2001 22:50:53 +0000 (+0000)
Subject: Added option --all-callee-saves will force all functions
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=ea2533ccb113d26311e88d2fbbf606ea26357a25;p=fw%2Fsdcc

Added option --all-callee-saves will force all functions
to act as callee saves


git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@1599 4a8a32a2-be11-0410-ad9d-d568d2c75423
---

diff --git a/src/SDCCglobl.h b/src/SDCCglobl.h
index f1316068..0c1f440f 100644
--- a/src/SDCCglobl.h
+++ b/src/SDCCglobl.h
@@ -229,7 +229,7 @@ struct options
     int useAccelerator;		/* use ds390 Arithmetic Accelerator */
     char *calleeSaves[128];	/* list of functions using callee save */
     char *excludeRegs[32];	/* registers excluded from saving */
-
+    int all_callee_saves; 	/* callee saves for all functions */
     /* starting address of the segments */
     int xstack_loc;		/* initial location of external stack */
     int stack_loc;		/* initial value of internal stack pointer */
diff --git a/src/SDCClrange.c b/src/SDCClrange.c
index 254202a8..df34ff86 100644
--- a/src/SDCClrange.c
+++ b/src/SDCClrange.c
@@ -582,6 +582,7 @@ rlivePoint (eBBlock ** ebbs, int count)
 		    ic->rlive = bitVectSetBit (ic->rlive, lrange->key);
 		}
 	    }
+#if 0
 	    /* overlapping live ranges should be eliminated */
 	    if (ASSIGN_ITEMP_TO_ITEMP (ic)) {
 		if (SPIL_LOC(IC_RIGHT(ic)) == SPIL_LOC(IC_RESULT(ic))   && /* left & right share the same spil location */
@@ -592,6 +593,7 @@ rlivePoint (eBBlock ** ebbs, int count)
 		    SPIL_LOC(IC_RIGHT(ic)) = NULL; /* then cannot share */
 		}
 	    }
+#endif
 	}
     }
 }
diff --git a/src/SDCCmain.c b/src/SDCCmain.c
index baed73f4..371d33b7 100644
--- a/src/SDCCmain.c
+++ b/src/SDCCmain.c
@@ -206,6 +206,7 @@ optionsTable[] = {
     { 0,    OPTION_SHORT_IS_8BITS,   NULL, "Make short 8bits (for old times sake)" },
     { 0,    "--profile",            &options.profile, "On supported ports, generate extra profiling information" },
     { 0,    "--fommit-frame-pointer", &options.ommitFramePtr, "Leave out the frame pointer." },
+    { 0,    "--all-callee-saves",   &options.all_callee_saves, "callee will always save registers used" },
     { 0,    "--use-accelerator",    &options.useAccelerator,"generate code for  DS390 Arithmetic Accelerator"}
 };
 
diff --git a/src/SDCCsymt.c b/src/SDCCsymt.c
index 8074d222..c3f14c47 100644
--- a/src/SDCCsymt.c
+++ b/src/SDCCsymt.c
@@ -1541,6 +1541,7 @@ inCalleeSaveList (char *s)
 {
   int i;
 
+  if (options.all_callee_saves) return 1;
   for (i = 0; options.calleeSaves[i]; i++)
     if (strcmp (options.calleeSaves[i], s) == 0)
       return 1;