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| author | Nadav Rotem <nrotem@apple.com> | 2013-01-03 01:47:31 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2013-01-03 01:47:31 +0000 |
| commit | 12b01e7b311375e017d7cbea9d797dc8261973de (patch) | |
| tree | b52c8183970d4e3237a297c827ea9f93b2dc8344 /test | |
| parent | f574b88adbb81c7262e236f8fb5aa662eb544a27 (diff) | |
| download | llvm-12b01e7b311375e017d7cbea9d797dc8261973de.tar.gz llvm-12b01e7b311375e017d7cbea9d797dc8261973de.tar.bz2 llvm-12b01e7b311375e017d7cbea9d797dc8261973de.tar.xz | |
LoopVectorizer: Test the unrolling flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171446 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LoopVectorize/simple-unroll.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/simple-unroll.ll b/test/Transforms/LoopVectorize/simple-unroll.ll new file mode 100644 index 0000000000..9825764bf1 --- /dev/null +++ b/test/Transforms/LoopVectorize/simple-unroll.ll @@ -0,0 +1,39 @@ +; RUN: opt < %s -loop-vectorize -force-vector-width=4 -force-vector-unroll=2 -dce -instcombine -licm -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.8.0" + +@a = common global [2048 x i32] zeroinitializer, align 16 + +; This is the loop. +; for (i=0; i<n; i++){ +; a[i] += i; +; } +;CHECK: @inc +;CHECK: load <4 x i32> +;CHECK: load <4 x i32> +;CHECK: add nsw <4 x i32> +;CHECK: add nsw <4 x i32> +;CHECK: store <4 x i32> +;CHECK: store <4 x i32> +;CHECK: ret void +define void @inc(i32 %n) nounwind uwtable noinline ssp { + %1 = icmp sgt i32 %n, 0 + br i1 %1, label %.lr.ph, label %._crit_edge + +.lr.ph: ; preds = %0, %.lr.ph + %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ] + %2 = getelementptr inbounds [2048 x i32]* @a, i64 0, i64 %indvars.iv + %3 = load i32* %2, align 4 + %4 = trunc i64 %indvars.iv to i32 + %5 = add nsw i32 %3, %4 + store i32 %5, i32* %2, align 4 + %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 %._crit_edge, label %.lr.ph + +._crit_edge: ; preds = %.lr.ph, %0 + ret void +} + |