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| author | David Majnemer <david.majnemer@gmail.com> | 2013-04-11 20:05:46 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2013-04-11 20:05:46 +0000 |
| commit | 59b11c415eb90861223477841913cf7d35b1a1a4 (patch) | |
| tree | 734dbc1186e46b57150b128c84cb64b8c3b58c99 /docs/CommandGuide | |
| parent | efc8740647eeabbb1bd4fe876859ece47a6af9c1 (diff) | |
Optimize icmp involving addition better
Allows LLVM to optimize sequences like the following:
%add = add nsw i32 %x, 1
%cmp = icmp sgt i32 %add, %y
into:
%cmp = icmp sge i32 %x, %y
as well as:
%add1 = add nsw i32 %x, 20
%add2 = add nsw i32 %y, 57
%cmp = icmp sge i32 %add1, %add2
into:
%add = add nsw i32 %y, 37
%cmp = icmp sle i32 %cmp, %x
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179316 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/CommandGuide')
0 files changed, 0 insertions, 0 deletions