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[amdgcn] Unfix registers for frame pointer

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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
This commit is contained in:
Kwok Cheung Yeung 2019-11-15 16:49:08 +00:00 committed by Kwok Cheung Yeung
parent 87fdbe697b
commit 969089ff80
2 changed files with 7 additions and 2 deletions
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5
gcc/ChangeLog
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@ -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.

4
gcc/config/gcn/gcn.h
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@ -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, \