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| author | m.hayes <m.hayes@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-09-04 22:31:09 +0000 |
|---|---|---|
| committer | m.hayes <m.hayes@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-09-04 22:31:09 +0000 |
| commit | 1dca94b4f7b58c18e24b3c720fabff8ba52f8db7 (patch) | |
| tree | fd6fe258cd885a419ef954743057cfa302b83e9c | |
| parent | fa8477c933fad289de6d05db8be3c1e875ee9c94 (diff) | |
| download | ppe42-gcc-1dca94b4f7b58c18e24b3c720fabff8ba52f8db7.tar.gz ppe42-gcc-1dca94b4f7b58c18e24b3c720fabff8ba52f8db7.zip | |
* 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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@29112 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/c4x/c4x.h | 8 |
2 files changed, 8 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 326147a5f9c..e765fac1f3f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/config/c4x/c4x.h b/gcc/config/c4x/c4x.h index 14b01338420..3f106f0270a 100644 --- a/gcc/config/c4x/c4x.h +++ b/gcc/config/c4x/c4x.h @@ -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. */ |
