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| author | Stephen Hines <srhines@google.com> | 2014-12-01 14:51:49 -0800 |
|---|---|---|
| committer | Stephen Hines <srhines@google.com> | 2014-12-02 16:08:10 -0800 |
| commit | 37ed9c199ca639565f6ce88105f9e39e898d82d0 (patch) | |
| tree | 8fb36d3910e3ee4c4e1b7422f4f017108efc52f5 /test/Transforms/TailCallElim/EraseBB.ll | |
| parent | d2327b22152ced7bc46dc629fc908959e8a52d03 (diff) | |
| download | external_llvm-37ed9c199ca639565f6ce88105f9e39e898d82d0.zip external_llvm-37ed9c199ca639565f6ce88105f9e39e898d82d0.tar.gz external_llvm-37ed9c199ca639565f6ce88105f9e39e898d82d0.tar.bz2 | |
Update aosp/master LLVM for rebase to r222494.
Change-Id: Ic787f5e0124df789bd26f3f24680f45e678eef2d
Diffstat (limited to 'test/Transforms/TailCallElim/EraseBB.ll')
| -rw-r--r-- | test/Transforms/TailCallElim/EraseBB.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Transforms/TailCallElim/EraseBB.ll b/test/Transforms/TailCallElim/EraseBB.ll new file mode 100644 index 0000000..c8290d7 --- /dev/null +++ b/test/Transforms/TailCallElim/EraseBB.ll @@ -0,0 +1,26 @@ +; RUN: opt -tailcallelim -S < %s 2>&1 | FileCheck %s + +; CHECK: add nsw i32 +; CHECK-NEXT: br label +; CHECK: add nsw i32 +; CHECK-NEXT: br label +; CHECK-NOT: Uses remain when a value is destroyed +define i32 @test(i32 %n) { +entry: + %cmp = icmp slt i32 %n, 2 + br i1 %cmp, label %if.then, label %if.else + +if.then: ; preds = %entry + %v1 = add nsw i32 %n, -2 + %call1 = tail call i32 @test(i32 %v1) + br label %return + +if.else: ; preds = %entry + %v2 = add nsw i32 %n, 4 + %call2 = tail call i32 @test(i32 %v2) + br label %return + +return: ; preds = %if.end, %if.else + %retval = phi i32 [ %call1, %if.then ], [ %call2, %if.else ] + ret i32 %retval +} |