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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 | b81cd63c4b7d9a352eab7ccf8d95962999d320a9 (patch) | |
| tree | 00cc24f50e3cfb6375386083392b270795e2f2ef /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | a16fa808d35d2c24dd212ce88b810518074cf8bb (diff) | |
| download | bcm5719-llvm-b81cd63c4b7d9a352eab7ccf8d95962999d320a9.tar.gz bcm5719-llvm-b81cd63c4b7d9a352eab7ccf8d95962999d320a9.zip | |
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
llvm-svn: 179316
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
0 files changed, 0 insertions, 0 deletions
