re PR target/9732 ([ppc32] Wrong code with -O2 -fPIC)

	2003-02-25  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	PR target/9732
	* config/rs6000/rs6000.c (first_reg_to_save): Handle
	PIC_OFFSET_TABLE_REGNUM for -fPIC too.
	(rs6000_emit_prologue): Likewise.
	(rs6000_emit_epilogue): Likewise.
	* config/rs6000/rs6000.h (CONDITIONAL_REGISTER_USAGE): Make
	PIC_OFFSET_TABLE_REGNUM a fixed register for -fPIC.

From-SVN: r63423

gcc/ChangeLog

+2003-02-25  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
+
+	PR target/9732
+	* config/rs6000/rs6000.c (first_reg_to_save): Handle
+	PIC_OFFSET_TABLE_REGNUM for -fPIC too.
+	(rs6000_emit_prologue): Likewise.
+	(rs6000_emit_epilogue): Likewise.
+	* config/rs6000/rs6000.h (CONDITIONAL_REGISTER_USAGE): Make
+	PIC_OFFSET_TABLE_REGNUM a fixed register for -fPIC.
+
 2003-02-25  Richard Henderson  <rth@redhat.com>
 
 	* real.c (real_to_integer2): Force overflow result only for

gcc/config/rs6000/rs6000.c

@@ -8918,7 +8918,7 @@ first_reg_to_save ()
     if (regs_ever_live[first_reg] 
 	&& (! call_used_regs[first_reg]
 	    || (first_reg == RS6000_PIC_OFFSET_TABLE_REGNUM
-		&& ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
+		&& ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
 		    || (DEFAULT_ABI == ABI_DARWIN && flag_pic)))))
       break;
 
@@ -10503,7 +10503,7 @@ rs6000_emit_prologue ()
 	if ((regs_ever_live[info->first_gp_reg_save+i] 
 	     && ! call_used_regs[info->first_gp_reg_save+i])
 	    || (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
-		&& ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
+		&& ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
 		    || (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
 	  {
 	    rtx addr, reg, mem;
@@ -10919,7 +10919,7 @@ rs6000_emit_epilogue (sibcall)
       if ((regs_ever_live[info->first_gp_reg_save+i] 
 	   && ! call_used_regs[info->first_gp_reg_save+i])
 	  || (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
-	      && ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
+	      && ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
 		  || (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
 	{
 	  rtx addr = gen_rtx_PLUS (Pmode, frame_reg_rtx, 

gcc/config/rs6000/rs6000.h

@@ -990,6 +990,10 @@ extern int rs6000_default_long_calls;
         = call_really_used_regs[i] = 1;					\
   if (DEFAULT_ABI == ABI_V4						\
       && PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM			\
+      && flag_pic == 2)							\
+    fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] = 1;			\
+  if (DEFAULT_ABI == ABI_V4						\
+      && PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM			\
       && flag_pic == 1)							\
     fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]				\
       = call_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]			\