diff options
| author | J"orn Rennecke <amylaar@redhat.co.uk> | 2000-09-18 19:31:28 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2000-09-18 20:31:28 +0100 |
| commit | 50ceefc2f53381e444e60014b624da28d2583765 (patch) | |
| tree | 854585c0d006970d8e757dc662975bf84ed8d6fc /gcc | |
| parent | 659e47fb241303d55e264111360d41aa132947e1 (diff) | |
| download | gcc-50ceefc2f53381e444e60014b624da28d2583765.zip gcc-50ceefc2f53381e444e60014b624da28d2583765.tar.gz gcc-50ceefc2f53381e444e60014b624da28d2583765.tar.bz2 | |
sh.c (addsubcosts): CONST is not cheap.
* sh.c (addsubcosts): CONST is not cheap.
(find_barrier): For Sh1, take alignment after jumps into account.
From-SVN: r36512
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/sh/sh.c | 12 |
2 files changed, 14 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4e99ee9..00b1f24 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Sep 18 20:26:50 2000 J"orn Rennecke <amylaar@redhat.co.uk> + + * sh.c (addsubcosts): CONST is not cheap. + (find_barrier): For Sh1, take alignment after jumps into account. + 2000-09-15 Andrew Haley <aph@redhat.com> * toplev.c (rest_of_compilation): Call purge_hard_subreg_sets to diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index afc0dca..a945666 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -1020,7 +1020,8 @@ addsubcosts (x) rtx x; { /* Adding a register is a single cycle insn. */ - if (GET_CODE (XEXP (x, 1)) != CONST_INT) + if (GET_CODE (XEXP (x, 1)) == REG + || GET_CODE (XEXP (x, 1)) == SUBREG) return 1; /* Likewise for small constants. */ @@ -2247,26 +2248,31 @@ find_barrier (num_mova, mova, from) inc = XVECLEN (body, 1) * GET_MODE_SIZE (GET_MODE (body)); } } + /* For the SH1, we generate alignments even after jumps-around-jumps. */ + else if (GET_CODE (from) == JUMP_INSN + && ! TARGET_SH2 + && ! TARGET_SMALLCODE) + new_align = 4; if (found_si) { + count_si += inc; if (new_align > si_align) { si_limit -= (count_si - 1) & (new_align - si_align); si_align = new_align; } count_si = (count_si + new_align - 1) & -new_align; - count_si += inc; } if (found_hi) { + count_hi += inc; if (new_align > hi_align) { hi_limit -= (count_hi - 1) & (new_align - hi_align); hi_align = new_align; } count_hi = (count_hi + new_align - 1) & -new_align; - count_hi += inc; } from = NEXT_INSN (from); } |