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c4x.h (CALLER_SAVE_PROFITABLE): Disable.

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* config/c4x/c4x.h (CALLER_SAVE_PROFITABLE): Disable.

This has been disabled since caller-save has marginal benefit on the c3x/c4x
and it avoids a long standing caller-save bug.

From-SVN: r29112
This commit is contained in:
Michael Hayes 1999-09-04 22:31:09 +00:00 committed by Michael Hayes
parent 03705c9588
commit ad3781e1a9
2 changed files with 8 additions and 4 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Sun Sep 5 10:13:19 1999 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* config/c4x/c4x.h (CALLER_SAVE_PROFITABLE): Disable.
Sat Sep 4 13:44:01 1999 Mark Mitchell <mark@codesourcery.com>
* Makefile.in (C_AND_C_OBJS): Add gcc-callbacks.o.

8
gcc/config/c4x/c4x.h
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@ -1086,11 +1086,11 @@ extern struct rtx_def *c4x_function_arg();
(c4x_function_arg(&CUM, MODE, TYPE, NAMED))
/* Define the profitability of saving registers around calls.
NOTE: For now we turn this off because caller-save assumes
that a register with a QFmode quantity can be saved/restored
using QImode. */
We disable caller save to avoid a bug in flow.c (this also affects
other targets such as m68k). Since we must use stf/sti,
the profitability is marginal anyway. */
/* #define CALLER_SAVE_PROFITABLE(REFS,CALLS) 0 */
#define CALLER_SAVE_PROFITABLE(REFS,CALLS) 0
/* Never pass data by reference. */