From: Alan Modra <amodra@gmail.com>
Date: Sat, 30 Apr 2016 00:33:26 +0000 (+0930)
Subject: [RS6000] Simplify setting of fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
X-Git-Tag: basepoints/gcc-8~7270
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fd1c95f7fb199ee3ab5dfe1c54a70df1b6fb6290;p=thirdparty%2Fgcc.git

[RS6000] Simplify setting of fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]

This makes the conditions look the same as other places that deal with
RS6000_PIC_OFFSET_TABLE_REGNUM, eg. first_reg_to_save.  No functional
changes.

	* config/rs6000/rs6000.c (rs6000_conditional_register_usage):
	Remove redundant PIC_OFFSET_TABLE_REGNUM test.  Replace with
	flag_pic test for Darwin.

From-SVN: r235669
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 98bd8481bd0d..ea7fe2907288 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-04-30  Alan Modra  <amodra@gmail.com>
+
+	* config/rs6000/rs6000.c (rs6000_conditional_register_usage):
+	Remove redundant PIC_OFFSET_TABLE_REGNUM test.  Replace with
+	flag_pic test for Darwin.
+
 2016-04-30  Alan Modra  <amodra@gmail.com>
 
 	* regs.h (struct reg_info_t): Delete freq_calls_crossed and
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 1cbb206ff754..1d24aa7999f0 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -8650,21 +8650,16 @@ rs6000_conditional_register_usage (void)
   if (DEFAULT_ABI == ABI_AIX || DEFAULT_ABI == ABI_ELFv2)
     call_really_used_regs[2] = 0;
 
-  if (DEFAULT_ABI == ABI_V4
-      && PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
-      && flag_pic == 2)
+  if (DEFAULT_ABI == ABI_V4 && 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)
+  if (DEFAULT_ABI == ABI_V4 && flag_pic == 1)
     fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
       = call_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
       = call_really_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] = 1;
 
-  if (DEFAULT_ABI == ABI_DARWIN
-      && PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
-      fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
+  if (DEFAULT_ABI == ABI_DARWIN && flag_pic)
+    fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
       = call_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
       = call_really_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] = 1;