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[PTX] Reorder hard regs
- From: Nathan Sidwell <nathan at acm dot org>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Thu, 17 Dec 2015 10:07:20 -0500
- Subject: [PTX] Reorder hard regs
- Authentication-results: sourceware.org; auth=none
This reorders the hardregs to be a contiguous block, and names them somewhat
more conventionally. (I had considered %sp, %fp etc, but went with the longer
names).
nathan
2015-12-17 Nathan Sidwell <nathan@acm.org>
* config/nvptx/nvptx.h (NVPTX_RETURN_REGNUM, FRAME_POINTER_REGNUM,
ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Renumber.
(REGISTER_NAMES): Update and rename.
(FIXED_REGISTERS, CALL_USED_REGISTERS): Update.
(enum_reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Reformat.
Index: config/nvptx/nvptx.h
===================================================================
--- config/nvptx/nvptx.h (revision 231769)
+++ config/nvptx/nvptx.h (working copy)
@@ -78,19 +78,15 @@
#define PTRDIFF_TYPE (TARGET_ABI64 ? "long int" : "int")
#define POINTER_SIZE (TARGET_ABI64 ? 64 : 32)
-
#define Pmode (TARGET_ABI64 ? DImode : SImode)
/* Registers. Since ptx is a virtual target, we just define a few
- hard registers for special purposes and leave pseudos unallocated. */
-
-#define FIRST_PSEUDO_REGISTER 16
-/* We have to have some available hard registers, to keep gcc setup
+ hard registers for special purposes and leave pseudos unallocated.
+ We have to have some available hard registers, to keep gcc setup
happy. */
-#define FIXED_REGISTERS \
- { 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1 }
-#define CALL_USED_REGISTERS \
- { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
+#define FIRST_PSEUDO_REGISTER 16
+#define FIXED_REGISTERS { 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+#define CALL_USED_REGISTERS { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
#define HARD_REGNO_NREGS(REG, MODE) \
((void)(REG), (void)(MODE), 1)
@@ -100,32 +96,13 @@
((void)(REG), (void)(MODE), true)
/* Register Classes. */
-
-enum reg_class
- {
- NO_REGS,
- ALL_REGS,
- LIM_REG_CLASSES
- };
-
+enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES };
+#define REG_CLASS_NAMES { "NO_REGS", "ALL_REGS" }
+#define REG_CLASS_CONTENTS { { 0x0000 }, { 0xFFFF } }
#define N_REG_CLASSES (int) LIM_REG_CLASSES
-#define REG_CLASS_NAMES { \
- "NO_REGS", \
- "ALL_REGS" }
-
-#define REG_CLASS_CONTENTS \
-{ \
- /* NO_REGS. */ \
- { 0x0000 }, \
- /* ALL_REGS. */ \
- { 0xFFFF }, \
-}
-
#define GENERAL_REGS ALL_REGS
-
#define REGNO_REG_CLASS(R) ((void)(R), ALL_REGS)
-
#define BASE_REG_CLASS ALL_REGS
#define INDEX_REG_CLASS NO_REGS
@@ -151,17 +128,16 @@ enum reg_class
#define FRAME_GROWS_DOWNWARD 0
#define STACK_GROWS_DOWNWARD 1
+#define NVPTX_RETURN_REGNUM 0
#define STACK_POINTER_REGNUM 1
-#define NVPTX_RETURN_REGNUM 4
-#define FRAME_POINTER_REGNUM 15
-#define ARG_POINTER_REGNUM 14
-
-#define STATIC_CHAIN_REGNUM 12
+#define FRAME_POINTER_REGNUM 2
+#define ARG_POINTER_REGNUM 3
+#define STATIC_CHAIN_REGNUM 4
#define REGISTER_NAMES \
{ \
- "%hr0", "%outargs", "%hfp", "%hr3", "%retval", "%hr5", "%hr6", "%hr7", \
- "%hr8", "%hr9", "%hr10", "%hr11", "%chain_in", "%hr13", "%argp", "%frame" \
+ "%value", "%stack", "%frame", "%args", "%chain", "%hr5", "%hr6", "%hr7", \
+ "%hr8", "%hr9", "%hr10", "%hr11", "%hr12", "%hr13", "%hr14", "%hr15" \
}
#define FIRST_PARM_OFFSET(FNDECL) ((void)(FNDECL), 0)