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author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2016-09-20 15:28:02 +0000 |
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committer | Bernd Edlinger <edlinger@gcc.gnu.org> | 2016-09-20 15:28:02 +0000 |
commit | 978fc7d446e520481934ea675f006b88043c8d24 (patch) | |
tree | b02621fc31e7a46c281f918f1705e06476d4e282 /gcc/config/vax | |
parent | f5bd4ad831ce28b148a216c49be675127c1b947c (diff) | |
download | gcc-978fc7d446e520481934ea675f006b88043c8d24.zip gcc-978fc7d446e520481934ea675f006b88043c8d24.tar.gz gcc-978fc7d446e520481934ea675f006b88043c8d24.tar.bz2 |
vax.h (ELIMINABLE_REGS): Define.
2016-09-20 Bernd Edlinger <bernd.edlinger@hotmail.de>
* config/var/vax.h (ELIMINABLE_REGS): Define.
(INITIAL_ELIMINATION_OFFSET): Define.
From-SVN: r240269
Diffstat (limited to 'gcc/config/vax')
-rw-r--r-- | gcc/config/vax/vax.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/config/vax/vax.h b/gcc/config/vax/vax.h index 77d9e7f..427c352 100644 --- a/gcc/config/vax/vax.h +++ b/gcc/config/vax/vax.h @@ -333,6 +333,16 @@ enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES }; } \ while (0) +/* This macro specifies a table of register pairs used to eliminate + unneeded registers that point into the stack frame. */ +#define ELIMINABLE_REGS {{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} + +/* On the VAX, FRAME_POINTER_REQUIRED is always 1, so the definition of this + macro doesn't matter for register eliminations, but it should still + give realistic data for rtx_addr_can_trap_p. */ +#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ + ((OFFSET) = get_frame_size ()) + /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, the stack pointer does not matter. The value is tested only in functions that have frame pointers. |