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| author | Nick Lewycky <nicholas@mxc.ca> | 2007-11-25 22:41:31 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2007-11-25 22:41:31 +0000 |
| commit | c54c561c9f7270c055dd7ba75a3a003b771a42d9 (patch) | |
| tree | 89d177bb9a1e54eae89f8c6a73192dcc9971159d /test/Analysis/ScalarEvolution/do-loop.ll | |
| parent | cfa597569d79a8b53cc4faa9725a66e246a19866 (diff) | |
| download | external_llvm-c54c561c9f7270c055dd7ba75a3a003b771a42d9.zip external_llvm-c54c561c9f7270c055dd7ba75a3a003b771a42d9.tar.gz external_llvm-c54c561c9f7270c055dd7ba75a3a003b771a42d9.tar.bz2 | |
Add new SCEV, SCEVSMax. This allows LLVM to analyze do-while loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44319 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/ScalarEvolution/do-loop.ll')
| -rw-r--r-- | test/Analysis/ScalarEvolution/do-loop.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/do-loop.ll b/test/Analysis/ScalarEvolution/do-loop.ll new file mode 100644 index 0000000..c6b3298 --- /dev/null +++ b/test/Analysis/ScalarEvolution/do-loop.ll @@ -0,0 +1,18 @@ +; RUN: llvm-as < %s | opt -analyze -scalar-evolution | grep smax +; PR1614 + +define i32 @f(i32 %x, i32 %y) { +entry: + br label %bb + +bb: ; preds = %bb, %entry + %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2] + %x_addr.0 = add i32 %indvar, %x ; <i32> [#uses=1] + %tmp2 = add i32 %x_addr.0, 1 ; <i32> [#uses=2] + %tmp5 = icmp slt i32 %tmp2, %y ; <i1> [#uses=1] + %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] + br i1 %tmp5, label %bb, label %bb7 + +bb7: ; preds = %bb + ret i32 %tmp2 +} |