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| author | Nadav Rotem <nrotem@apple.com> | 2012-12-04 18:17:33 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2012-12-04 18:17:33 +0000 |
| commit | f6088d126e9110180f7db231bb58da9230a09537 (patch) | |
| tree | f77f8ff0bdbbed39221f20ba1222fc15f14a0e38 /test/Transforms/LoopVectorize/if-conversion.ll | |
| parent | 4b3aafb4b2ce9c04eae86617d305f6358ebb662e (diff) | |
| download | external_llvm-f6088d126e9110180f7db231bb58da9230a09537.zip external_llvm-f6088d126e9110180f7db231bb58da9230a09537.tar.gz external_llvm-f6088d126e9110180f7db231bb58da9230a09537.tar.bz2 | |
Add support for reduction variables when IF-conversion is enabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169288 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopVectorize/if-conversion.ll')
| -rw-r--r-- | test/Transforms/LoopVectorize/if-conversion.ll | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/if-conversion.ll b/test/Transforms/LoopVectorize/if-conversion.ll index 35c549c..b4701b9 100644 --- a/test/Transforms/LoopVectorize/if-conversion.ll +++ b/test/Transforms/LoopVectorize/if-conversion.ll @@ -58,3 +58,51 @@ if.end: for.end: ret i32 undef } + + + +; int func(int *A, int n) { +; unsigned sum = 0; +; for (int i = 0; i < n; ++i) +; if (A[i] > 30) +; sum += A[i] + 2; +; +; return sum; +; } + +;CHECK: @reduction_func +;CHECK: load <4 x i32> +;CHECK: icmp sgt <4 x i32> +;CHECK: add <4 x i32> +;CHECK: select <4 x i1> +;CHECK: ret i32 +define i32 @reduction_func(i32* nocapture %A, i32 %n) nounwind uwtable readonly ssp { +entry: + %cmp10 = icmp sgt i32 %n, 0 + br i1 %cmp10, label %for.body, label %for.end + +for.body: ; preds = %entry, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] + %sum.011 = phi i32 [ %sum.1, %for.inc ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %cmp1 = icmp sgt i32 %0, 30 + br i1 %cmp1, label %if.then, label %for.inc + +if.then: ; preds = %for.body + %add = add i32 %sum.011, 2 + %add4 = add i32 %add, %0 + br label %for.inc + +for.inc: ; preds = %for.body, %if.then + %sum.1 = phi i32 [ %add4, %if.then ], [ %sum.011, %for.body ] + %indvars.iv.next = add i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.inc, %entry + %sum.0.lcssa = phi i32 [ 0, %entry ], [ %sum.1, %for.inc ] + ret i32 %sum.0.lcssa +} + |