diff options
| author | Michael Hayes <m.hayes@elec.canterbury.ac.nz> | 1998-09-30 18:09:47 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-09-30 12:09:47 -0600 |
| commit | 1e326708e83b2e03807c689f14ed3772cd346efc (patch) | |
| tree | 4cad448709fc0bd1befbe6fec3245d112509581d /gcc/global.c | |
| parent | b8c08e043a09a5e0ccb342bc89ffe5d39d206635 (diff) | |
| download | gcc-1e326708e83b2e03807c689f14ed3772cd346efc.tar.gz | |
regs.h (HARD_REGNO_CALL_PART_CLOBBERED): New macro.
* regs.h (HARD_REGNO_CALL_PART_CLOBBERED): New macro.
* local-alloc.c (find_free_reg): Use it.
* global.c (find_reg): Likewise.
* tm.texi: Document HARD_REGNO_CALL_PART_CLOBBERED.
From-SVN: r22688
Diffstat (limited to 'gcc/global.c')
| -rw-r--r-- | gcc/global.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/global.c b/gcc/global.c index a3d7e023283..3b0c0ec7a4c 100644 --- a/gcc/global.c +++ b/gcc/global.c @@ -976,7 +976,10 @@ find_reg (allocno, losers, alt_regs_p, accept_call_clobbered, retrying) int regno = i; #endif if (! TEST_HARD_REG_BIT (used, regno) - && HARD_REGNO_MODE_OK (regno, mode)) + && HARD_REGNO_MODE_OK (regno, mode) + && (allocno_calls_crossed[allocno] == 0 + || accept_call_clobbered + || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))) { register int j; register int lim = regno + HARD_REGNO_NREGS (regno, mode); |