diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/LoopVectorize/X86/small-size.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/X86/small-size.ll b/test/Transforms/LoopVectorize/X86/small-size.ll index 14ac417bb5..1d46366369 100644 --- a/test/Transforms/LoopVectorize/X86/small-size.ll +++ b/test/Transforms/LoopVectorize/X86/small-size.ll @@ -115,6 +115,31 @@ define void @example3(i32 %n, i32* noalias nocapture %p, i32* noalias nocapture ret void } +; N is unknown, we need a tail. Can't vectorize because the loop is cold. +;CHECK-LABEL: @example4( +;CHECK-NOT: <4 x i32> +;CHECK: ret void +define void @example4(i32 %n, i32* noalias nocapture %p, i32* noalias nocapture %q) { + %1 = icmp eq i32 %n, 0 + br i1 %1, label %._crit_edge, label %.lr.ph, !prof !0 + +.lr.ph: ; preds = %0, %.lr.ph + %.05 = phi i32 [ %2, %.lr.ph ], [ %n, %0 ] + %.014 = phi i32* [ %5, %.lr.ph ], [ %p, %0 ] + %.023 = phi i32* [ %3, %.lr.ph ], [ %q, %0 ] + %2 = add nsw i32 %.05, -1 + %3 = getelementptr inbounds i32* %.023, i64 1 + %4 = load i32* %.023, align 16 + %5 = getelementptr inbounds i32* %.014, i64 1 + store i32 %4, i32* %.014, align 16 + %6 = icmp eq i32 %2, 0 + br i1 %6, label %._crit_edge, label %.lr.ph + +._crit_edge: ; preds = %.lr.ph, %0 + ret void +} + +!0 = metadata !{metadata !"branch_weights", i32 64, i32 4} ; We can't vectorize this one because we need a runtime ptr check. ;CHECK-LABEL: @example23( |