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| author | Nick Lewycky <nicholas@mxc.ca> | 2007-09-27 14:12:54 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2007-09-27 14:12:54 +0000 |
| commit | 9a2f93121b31bf6345d1552bdc43037f89714d86 (patch) | |
| tree | 03e09ec0b003b8c2de973c25e6db2d1aa1554202 /test/Analysis/ScalarEvolution | |
| parent | 0678f60bf2597b1be126a246ad61486449de220d (diff) | |
| download | external_llvm-9a2f93121b31bf6345d1552bdc43037f89714d86.zip external_llvm-9a2f93121b31bf6345d1552bdc43037f89714d86.tar.gz external_llvm-9a2f93121b31bf6345d1552bdc43037f89714d86.tar.bz2 | |
Build the correct range for loops with unusual bounds. Fix from Jay Foad.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42394 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/ScalarEvolution')
| -rw-r--r-- | test/Analysis/ScalarEvolution/2007-09-27-LargeStepping.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/2007-09-27-LargeStepping.ll b/test/Analysis/ScalarEvolution/2007-09-27-LargeStepping.ll new file mode 100644 index 0000000..d7a0baf --- /dev/null +++ b/test/Analysis/ScalarEvolution/2007-09-27-LargeStepping.ll @@ -0,0 +1,21 @@ +; RUN: llvm-as < %s | opt -analyze -scalar-evolution 2>&1 | grep "13 iterations" +; PR1706 + +define i32 @f() { +entry: + br label %bb5 + +bb: ; preds = %bb5 + %tmp2 = shl i32 %j.0, 1 ; <i32> [#uses=1] + %tmp4 = add i32 %i.0, 268435456 ; <i32> [#uses=1] + br label %bb5 + +bb5: ; preds = %bb, %entry + %j.0 = phi i32 [ 1, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=2] + %i.0 = phi i32 [ -1879048192, %entry ], [ %tmp4, %bb ] ; <i32> [#uses=2] + %tmp7 = icmp slt i32 %i.0, 1610612736 ; <i1> [#uses=1] + br i1 %tmp7, label %bb, label %return + +return: ; preds = %bb5 + ret i32 %j.0 +} |