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| author | Richard Kenner <kenner@gcc.gnu.org> | 1997-04-13 08:15:28 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1997-04-13 08:15:28 -0400 |
| commit | 8dddd002b0e059a7f8a6cd0147afea0d83188cac (patch) | |
| tree | 4082173ad82240f8586082eef6fbb98fde6f4dde /gcc | |
| parent | 1f027d54a1f8d5ca34a8924eeea12af92d1075c8 (diff) | |
| download | gcc-8dddd002b0e059a7f8a6cd0147afea0d83188cac.zip gcc-8dddd002b0e059a7f8a6cd0147afea0d83188cac.tar.gz gcc-8dddd002b0e059a7f8a6cd0147afea0d83188cac.tar.bz2 | |
(reload): If function has nonlocal label, mark all caller-saved regs
as used.
From-SVN: r13863
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/reload1.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index a7b4238..42fe5c7 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -589,10 +589,18 @@ reload (first, global, dumpfile) as homes for pseudo registers. This is done here rather than (eg) in global_alloc because this point is reached even if not optimizing. */ - for (i = FIRST_PSEUDO_REGISTER; i < max_regno; i++) mark_home_live (i); + /* A function that receives a nonlocal goto must save all call-saved + registers. */ + if (current_function_has_nonlocal_label) + for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) + { + if (! call_used_regs[i] && ! fixed_regs[i]) + regs_ever_live[i] = 1; + } + for (i = 0; i < scratch_list_length; i++) if (scratch_list[i]) mark_scratch_live (scratch_list[i]); |