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| author | Jim Wilson <wilson@cygnus.com> | 1999-03-08 16:09:05 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1999-03-08 08:09:05 -0800 |
| commit | 66830675f2c2820222585b4a84b3f2ab7912dfbb (patch) | |
| tree | b8606b5e3306b357419fb22b180616ee884b4a17 | |
| parent | 86879c21acddbfa729e6172052ab7b79165d27b4 (diff) | |
| download | gcc-66830675f2c2820222585b4a84b3f2ab7912dfbb.zip gcc-66830675f2c2820222585b4a84b3f2ab7912dfbb.tar.gz gcc-66830675f2c2820222585b4a84b3f2ab7912dfbb.tar.bz2 | |
Fix cygwin toolchain build failure reported by Geoffrey Noer.
* unroll.c (loop_iterations): Only call loop_find_equiv_value if we
have a REG or SUBREG.
From-SVN: r25643
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/unroll.c | 6 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 77d23c1..fc6d1ef 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Mar 8 16:04:44 1999 Jim Wilson <wilson@cygnus.com> + + * unroll.c (loop_iterations): Only call loop_find_equiv_value if we + have a REG or SUBREG. + Mon Mar 8 15:27:42 1999 Jeffrey A Law (law@cygnus.com) * flow.c (merge_blocks_nomove): For HAVE_cc0 targets, make sure diff --git a/gcc/unroll.c b/gcc/unroll.c index 841f06a..32ed531 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -3830,7 +3830,11 @@ loop_iterations (loop_start, loop_end, loop_info) if (GET_CODE (increment) != CONST_INT) { - increment = loop_find_equiv_value (loop_start, increment); + /* If we have a REG, check to see if REG holds a constant value. */ + /* ??? Other RTL, such as (neg (reg)) is possible here, but it isn't + clear if it is worthwhile to try to handle such RTL. */ + if (GET_CODE (increment) == REG || GET_CODE (increment) == SUBREG) + increment = loop_find_equiv_value (loop_start, increment); if (GET_CODE (increment) != CONST_INT) { |