[amdgcn] Unfix registers for frame pointer

Allow the registers used for the frame pointer to be used for other purposes
if the frame pointer is not being used.

2019-11-15  Kwok Cheung Yeung  <kcy@codesourcery.com>

	gcc/
	* config/gcn/gcn.h (FIXED_REGISTERS): Unfix frame pointer.
	(CALL_USED_REGISTERS): Make frame pointer callee-saved.

From-SVN: r278306

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8c06b824d62ffe20ed4045b9a175936992138017..fcc4f7bd285518a27d89f37cf90d8ff1ecc17705 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2019-11-15  Kwok Cheung Yeung  <kcy@codesourcery.com>
+
+       * config/gcn/gcn.h (FIXED_REGISTERS): Unfix frame pointer.
+       (CALL_USED_REGISTERS): Make frame pointer callee-saved.
+
 2019-11-15  Kwok Cheung Yeung  <kcy@codesourcery.com>
 
        * config/gcn/gcn.c (MAX_NORMAL_SGPR_COUNT, MAX_NORMAL_VGPR_COUNT): New.

diff --git a/gcc/config/gcn/gcn.h b/gcc/config/gcn/gcn.h
index dd3789b9f7d78194c91861c27b76bd39fb2854ff..e60b43122d5ba37c865fba99ad05d34e3895bce4 100644 (file)
--- a/gcc/config/gcn/gcn.h
+++ b/gcc/config/gcn/gcn.h
@@ -162,7 +162,7 @@
     /* Scalars.  */                                \
     1, 1, 0, 0, 1, 1, 0, 0, 1, 1,                  \
 /*             fp    sp    lr.  */                 \
-    1, 1, 0, 0, 1, 1, 1, 1, 0, 0,                  \
+    1, 1, 0, 0, 0, 0, 1, 1, 0, 0,                  \
 /*  exec_save, cc_save */                          \
     1, 1, 1, 1, 0, 0, 0, 0, 0, 0,                  \
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                  \
@@ -203,7 +203,7 @@
 #define CALL_USED_REGISTERS {                      \
     /* Scalars.  */                                \
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1,                  \
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1,                  \
+    1, 1, 1, 1, 0, 0, 1, 1, 1, 1,                  \
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1,                  \
     1, 1, 0, 0, 0, 0, 0, 0, 0, 0,                  \
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                  \