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| 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/local-alloc.c | |
| parent | b8c08e043a09a5e0ccb342bc89ffe5d39d206635 (diff) | |
| download | gcc-1e326708e83b2e03807c689f14ed3772cd346efc.zip gcc-1e326708e83b2e03807c689f14ed3772cd346efc.tar.gz gcc-1e326708e83b2e03807c689f14ed3772cd346efc.tar.bz2 | |
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/local-alloc.c')
| -rw-r--r-- | gcc/local-alloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index 5dbde52..3049a98 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -2043,7 +2043,10 @@ find_free_reg (class, mode, qty, accept_call_clobbered, just_try_suggested, int regno = i; #endif if (! TEST_HARD_REG_BIT (first_used, regno) - && HARD_REGNO_MODE_OK (regno, mode)) + && HARD_REGNO_MODE_OK (regno, mode) + && (qty_n_calls_crossed[qty] == 0 + || accept_call_clobbered + || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))) { register int j; register int size1 = HARD_REGNO_NREGS (regno, mode); |