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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-07-16 00:22:41 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-07-16 00:22:41 +0000 |
| commit | 68e29b3d6e6749127efb6c120cb531132aa18de6 (patch) | |
| tree | 7eae3c99f56b81f2c11a070c986c22daf8052e0c | |
| parent | c1027a47035055091a0ce7691249d51cc30b8491 (diff) | |
| download | gcc-68e29b3d6e6749127efb6c120cb531132aa18de6.tar.gz | |
8
* loop.c (emit_iv_add_mult): Scan the entire insn list generated
for the sequence, recording base values.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@21208 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/loop.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index 1932bdeb5bc..0171741e22b 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -6005,7 +6005,23 @@ emit_iv_add_mult (b, m, a, reg, insert_before) emit_insn_before (seq, insert_before); - record_base_value (REGNO (reg), b, 0); + /* It is entirely possible that the expansion created lots of new + registers. Iterate over the sequence we just created and + record them all. */ + + if (GET_CODE (seq) == SEQUENCE) + { + int i; + for (i = 0; i < XVECLEN (seq, 0); ++i) + { + rtx set = single_set (XVECEXP (seq, 0, i)); + if (set && GET_CODE (SET_DEST (set)) == REG) + record_base_value (REGNO (SET_DEST (set)), SET_SRC (set), 0); + } + } + else if (GET_CODE (seq) == SET + && GET_CODE (SET_DEST (seq)) == REG) + record_base_value (REGNO (SET_DEST (seq)), SET_SRC (seq), 0); } /* Test whether A * B can be computed without |