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| author | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-02 19:16:04 +0000 |
|---|---|---|
| committer | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-02 19:16:04 +0000 |
| commit | 3d77819c1e9c627bb0c283cafbd88acfd77e87e4 (patch) | |
| tree | ea75359bbaa2e28306d3a1e0dc9ed97e7d652471 | |
| parent | b907b1fbafe1e32d26b9abe967405ef2f91ccf5c (diff) | |
| download | ppe42-gcc-3d77819c1e9c627bb0c283cafbd88acfd77e87e4.tar.gz ppe42-gcc-3d77819c1e9c627bb0c283cafbd88acfd77e87e4.zip | |
* expmed.c (expand_divmod): Add comment.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@121519 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/expmed.c | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 95987efeb56..38dd30edfe1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2007-02-02 Ian Lance Taylor <iant@google.com> + + * expmed.c (expand_divmod): Add comment. + 2007-02-02 Kazu Hirata <kazu@codesourcery.com> * emit-rtl.c (renumber_insns): Remove. diff --git a/gcc/expmed.c b/gcc/expmed.c index fea859a18c1..8e8a63917a1 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -4176,6 +4176,9 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode, HOST_WIDE_INT d = INTVAL (op1); unsigned HOST_WIDE_INT abs_d; + /* Since d might be INT_MIN, we have to cast to + unsigned HOST_WIDE_INT before negating to avoid + undefined signed overflow. */ abs_d = (d >= 0 ? (unsigned HOST_WIDE_INT) d : - (unsigned HOST_WIDE_INT) d); |
