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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-12-08 03:22:33 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-12-08 03:22:33 +0000 |
| commit | 631c65b32a2d855458f31948bcb9165b285785f8 (patch) | |
| tree | 9c8c66c576241096238da778fd7a4457cc1fb503 /gcc/loop.h | |
| parent | a1fccfde31efb53ea995cb6cc1692e156112c37d (diff) | |
| download | gcc-631c65b32a2d855458f31948bcb9165b285785f8.tar.gz | |
* loop.h (struct induction): Add multi_insn_incr.
* loop.c (basic_induction_var): New multi_insn_incr argument.
Set it if we search back through previous insns for the biv.
(record_biv): New multi_insn_incr argument; fill in struct induction.
(strength_reduce): Discard an iv with multiple bivs, any of
which require multiple insns to increment.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30820 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/loop.h')
| -rw-r--r-- | gcc/loop.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/loop.h b/gcc/loop.h index 2578956bd95..14735810fd5 100644 --- a/gcc/loop.h +++ b/gcc/loop.h @@ -101,6 +101,7 @@ struct induction initialized in unrolled loop. */ unsigned shared : 1; unsigned no_const_addval : 1; /* 1 if add_val does not contain a const. */ + unsigned multi_insn_incr : 1; /* 1 if multiple insns updated the biv. */ int lifetime; /* Length of life of this giv */ rtx derive_adjustment; /* If nonzero, is an adjustment to be subtracted from add_val when this giv |