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| author | Wojciech Matyjewicz <wmatyjewicz@fastmail.fm> | 2008-02-12 15:09:36 +0000 |
|---|---|---|
| committer | Wojciech Matyjewicz <wmatyjewicz@fastmail.fm> | 2008-02-12 15:09:36 +0000 |
| commit | 7b5b76835a608155a94f6b08ea9c6091cb070815 (patch) | |
| tree | 80946930e84cc1b0228e8ab9081da9fe304e68e5 /lib/CodeGen | |
| parent | b6c36e405899a9bc3ac526b27c6db1f44fec69d4 (diff) | |
Fix PR2002. Suppose n is the initial value for the induction
variable (with step 1) and m is its final value. Then, the correct trip
count is SMAX(m,n)-n. Previously, we used SMAX(0,m-n), but m-n may
overflow and can't in general be interpreted as signed.
Patch by Nick Lewycky.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47007 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
0 files changed, 0 insertions, 0 deletions