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| author | Richard Kenner <kenner@gcc.gnu.org> | 1993-01-19 17:54:22 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1993-01-19 17:54:22 -0500 |
| commit | 28edebac58063d9c67e10121dd9d56d3a7776dd2 (patch) | |
| tree | 129ca373e6d060bcc93fd9a125d5b7a5bda3de22 /gcc | |
| parent | f898f03121cf231a8b458cd097cdd6df85110c1e (diff) | |
| download | gcc-28edebac58063d9c67e10121dd9d56d3a7776dd2.zip gcc-28edebac58063d9c67e10121dd9d56d3a7776dd2.tar.gz gcc-28edebac58063d9c67e10121dd9d56d3a7776dd2.tar.bz2 | |
(output_epilog): Only restore the cr's that we actually used;
previously, we saved and restored all of them.
From-SVN: r3282
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 2bfaa3dd..b9a2332 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -1385,9 +1385,13 @@ output_epilog (file, size) else if (first_fp_reg == 63) fprintf (file, "\tlfd 31,-8(1)\n"); - /* If we saved cr, restore it here. Just set cr2, cr3, and cr4. */ + /* If we saved cr, restore it here. Just those of cr2, cr3, and cr4 + that were used. */ if (must_save_cr ()) - fprintf (file, "\tmtcrf 0x38,12\n"); + fprintf (file, "\tmtcrf %d,12\n", + (regs_ever_live[70] != 0) * 0x20 + + (regs_ever_live[71] != 0) * 0x10 + + (regs_ever_live[72] != 0) * 0x8); /* If we have to restore more than two FP registers, branch to the restore function. It will return to our caller. */ |