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| author | Jeffrey A Law <law@cygnus.com> | 1999-04-07 23:07:06 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-04-07 17:07:06 -0600 |
| commit | 47cf37f924571be13c4d4a911acafc9363daf9c0 (patch) | |
| tree | 10383f39e505fddd7e5828eb29ff34a3d902f032 | |
| parent | a45f333130536a0dcfb468a6b49e6e81c5fab882 (diff) | |
| download | gcc-47cf37f924571be13c4d4a911acafc9363daf9c0.zip gcc-47cf37f924571be13c4d4a911acafc9363daf9c0.tar.gz gcc-47cf37f924571be13c4d4a911acafc9363daf9c0.tar.bz2 | |
h8300.c (h8300_adjust_insn_length): Avoid trying to recognize USE, CLOBBER or SEQUENCE insns.
* h8300.c (h8300_adjust_insn_length): Avoid trying to recognize
USE, CLOBBER or SEQUENCE insns.
* unroll.c (unroll_loop): For HAVE_cc0 machines, adjust copy_end_luid
to account for the uncopied insn that sets cc0 at the end of the loop.
From-SVN: r26283
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/h8300/h8300.c | 6 | ||||
| -rw-r--r-- | gcc/unroll.c | 8 |
3 files changed, 20 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d7c4dba..9497b2b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -13,6 +13,12 @@ Tue Apr 6 17:49:49 1999 Philip Blundell <pb@nexus.co.uk> Wed Apr 7 14:07:34 1999 Jeffrey A Law (law@cygnus.com) + * h8300.c (h8300_adjust_insn_length): Avoid trying to recognize + USE, CLOBBER or SEQUENCE insns. + + * unroll.c (unroll_loop): For HAVE_cc0 machines, adjust copy_end_luid + to account for the uncopied insn that sets cc0 at the end of the loop. + * unroll.c (copy_loop_body): Always ensure at least two insns are in the copied loop. diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index eb5d418..b181ae0 100644 --- a/gcc/config/h8300/h8300.c +++ b/gcc/config/h8300/h8300.c @@ -3033,6 +3033,12 @@ h8300_adjust_insn_length (insn, length) { rtx pat; + /* We must filter these ou before calling get_attr_adjust_length. */ + if (GET_CODE (PATTERN (insn)) == USE + || GET_CODE (PATTERN (insn)) == CLOBBER + || GET_CODE (PATTERN (insn)) == SEQUENCE) + return 0; + if (get_attr_adjust_length (insn) == ADJUST_LENGTH_NO) return 0; diff --git a/gcc/unroll.c b/gcc/unroll.c index 9c0109d..f1080aa 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -790,6 +790,14 @@ unroll_loop (loop_end, insn_count, loop_start, end_insert_before, since it will also be used outside the loop. */ if (GET_CODE (copy_end) == JUMP_INSN) copy_end_luid--; + + /* If we have a target that uses cc0, then we also must not duplicate + the insn that sets cc0 before the jump insn. */ +#ifdef HAVE_cc0 + if (GET_CODE (copy_end) == JUMP_INSN) + copy_end_luid--; +#endif + /* If copy_start points to the NOTE that starts the loop, then we must use the next luid, because invariant pseudo-regs moved out of the loop have their lifetimes modified to start here, but they are not safe |