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| author | Dan Gohman <gohman@apple.com> | 2009-02-18 17:22:41 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-02-18 17:22:41 +0000 |
| commit | f5a309e989b8d2199cb542793e9edf48395d9fed (patch) | |
| tree | c52543300d485f04baebd2bc1ee8f1fb7721a411 /tools/gold/gold-plugin.cpp | |
| parent | cad24c9abc834db5cf8f92019f99370507d8d07a (diff) | |
| download | llvm-f5a309e989b8d2199cb542793e9edf48395d9fed.tar.gz llvm-f5a309e989b8d2199cb542793e9edf48395d9fed.tar.bz2 llvm-f5a309e989b8d2199cb542793e9edf48395d9fed.tar.xz | |
Use a sign-extend instead of a zero-extend when promoting a
trip count value when the original loop iteration condition is
signed and the canonical induction variable won't undergo signed
overflow. This isn't required for correctness; it just preserves
more information about original loop iteration values.
Add a getTruncateOrSignExtend method to ScalarEvolution,
following getTruncateOrZeroExtend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64918 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/gold/gold-plugin.cpp')
0 files changed, 0 insertions, 0 deletions