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| author | Anatoly Sokolov <aesok@post.ru> | 2008-07-09 17:43:11 +0400 |
|---|---|---|
| committer | Anatoly Sokolov <aesok@gcc.gnu.org> | 2008-07-09 17:43:11 +0400 |
| commit | dbc42c44d87ef1031c3f649436df02fbcdbcc3c6 (patch) | |
| tree | 1e2b360a3708a9b833a49b11cda5009cb7f10ed9 /gcc/recog.c | |
| parent | 28f16d05a00d360b76f3c48ac739bcab22fb1418 (diff) | |
| download | gcc-dbc42c44d87ef1031c3f649436df02fbcdbcc3c6.zip gcc-dbc42c44d87ef1031c3f649436df02fbcdbcc3c6.tar.gz gcc-dbc42c44d87ef1031c3f649436df02fbcdbcc3c6.tar.bz2 | |
target.h (struct gcc_target): Add hard_regno_scratch_ok field.
* target.h (struct gcc_target): Add hard_regno_scratch_ok field.
* target-def.h (TARGET_HARD_REGNO_SCRATCH_OK): New.
(TARGET_INITIALIZER): Use TARGET_HARD_REGNO_SCRATCH_OK.
* targhooks.c (default_hard_regno_scratch_ok): New function.
* targhooks.h (default_hard_regno_scratch_ok): Declare function.
* doc/tm.texi: Document TARGET_HARD_REGNO_SCRATCH_OK hook.
* recog.c: Include "target.h".
(peep2_find_free_register): Add check for global regs. Add target
specific check.
* Makefile.in (recog.o): Depend on target.h.
From-SVN: r137657
Diffstat (limited to 'gcc/recog.c')
| -rw-r--r-- | gcc/recog.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/recog.c b/gcc/recog.c index 3ddfd86..73d5764 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -40,6 +40,7 @@ along with GCC; see the file COPYING3. If not see #include "basic-block.h" #include "output.h" #include "reload.h" +#include "target.h" #include "timevar.h" #include "tree-pass.h" #include "df.h" @@ -2898,6 +2899,9 @@ peep2_find_free_register (int from, int to, const char *class_str, /* Don't allocate fixed registers. */ if (fixed_regs[regno]) continue; + /* Don't allocate global registers. */ + if (global_regs[regno]) + continue; /* Make sure the register is of the right class. */ if (! TEST_HARD_REG_BIT (reg_class_contents[cl], regno)) continue; @@ -2907,6 +2911,9 @@ peep2_find_free_register (int from, int to, const char *class_str, /* And that we don't create an extra save/restore. */ if (! call_used_regs[regno] && ! df_regs_ever_live_p (regno)) continue; + if (! targetm.hard_regno_scratch_ok (regno)) + continue; + /* And we don't clobber traceback for noreturn functions. */ if ((regno == FRAME_POINTER_REGNUM || regno == HARD_FRAME_POINTER_REGNUM) && (! reload_completed || frame_pointer_needed)) |