diff options
| author | Dan Gohman <gohman@apple.com> | 2008-05-23 02:28:01 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-05-23 02:28:01 +0000 |
| commit | a332f17c8c80bb457617052fb35a3f2cecd05493 (patch) | |
| tree | 78f7513fd2bc8bde2d204017f225ef551dea752b /test/Transforms/InstCombine/add-sitofp.ll | |
| parent | e4977cf750eaff28275429191821420c20b0c64f (diff) | |
| download | llvm-a332f17c8c80bb457617052fb35a3f2cecd05493.tar.gz llvm-a332f17c8c80bb457617052fb35a3f2cecd05493.tar.bz2 llvm-a332f17c8c80bb457617052fb35a3f2cecd05493.tar.xz | |
Generalize the new code in instcombine's ComputeNumSignBits for handling
and/or to handle more cases (such as this add-sitofp.ll testcase), and
port it to selectiondag's ComputeNumSignBits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51469 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/add-sitofp.ll')
| -rw-r--r-- | test/Transforms/InstCombine/add-sitofp.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/add-sitofp.ll b/test/Transforms/InstCombine/add-sitofp.ll new file mode 100644 index 0000000000..35c6567da6 --- /dev/null +++ b/test/Transforms/InstCombine/add-sitofp.ll @@ -0,0 +1,9 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {add i32} + +define double @x(i32 %a, i32 %b) nounwind { + %m = lshr i32 %a, 24 + %n = and i32 %m, %b + %o = sitofp i32 %n to double + %p = add double %o, 1.0 + ret double %p +} |