[PATCH, nds32] Add OPT_fsched_pressure and OPT_fomit_frame_pointer in optimization table.

[Chung-Ju Wu]

Hi, all,

In the nds32 port, most of time we prefer reducing code size.
So we modify the nds32_option_optimization_table[] to apply
-fsched-pressure and -fomit-frame-pointer for specific
optimization level.

Committed as Rev.252876: https://gcc.gnu.org/r252876

gcc/
	* common/config/nds32/nds32-common.c
	(nds32_option_optimization_table): Refine formatting.
	(nds32_option_optimization_table): Use -fsched-pressure and
	-fomit-frame-pointer for specific optimization level.


Best regards,
jasonwucj
-------------- next part --------------
--- sandbox/src/gcc.svn/gcc/common/config/nds32/nds32-common.c	2017-09-06 00:37:02.684366502 +0800
+++ gcc.710release.orig/gcc/common/config/nds32/nds32-common.c	2017-09-15 22:11:41.441875438 +0800
@@ -74,12 +74,14 @@
 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE.  */
 static const struct default_options nds32_option_optimization_table[] =
 {
-  /* Enable -fomit-frame-pointer by default at -O1 or higher.  */
-  { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
+  /* Enable -fsched-pressure by default at -O1 and above.  */
+  { OPT_LEVELS_1_PLUS,            OPT_fsched_pressure,     NULL, 1 },
+  /* Enable -fomit-frame-pointer by default at all optimization levels.  */
+  { OPT_LEVELS_ALL,               OPT_fomit_frame_pointer, NULL, 1 },
   /* Enable -mv3push by default at -Os, but it is useless under V2 ISA.  */
-  { OPT_LEVELS_SIZE,   OPT_mv3push,             NULL, 1 },
+  { OPT_LEVELS_SIZE,              OPT_mv3push,             NULL, 1 },
 
-  { OPT_LEVELS_NONE,   0,                       NULL, 0 }
+  { OPT_LEVELS_NONE,              0,                       NULL, 0 }
 };
 
 /* ------------------------------------------------------------------------ */