| ; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -S | FileCheck %s |
| |
| ; Test case for PR45525. Checks that phi's with a single predecessor and a mask are supported. |
| |
| define void @main(i1 %cond, ptr %arr) { |
| ; CHECK-LABEL: @main( |
| ; CHECK-NEXT: bb.0: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK: [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK: [[TMP5:%.*]] = mul <4 x i32> [[VEC_IND]], splat (i32 3) |
| ; |
| bb.0: |
| br label %bb.1 |
| |
| bb.1: ; preds = %bb.3, %bb.0 |
| %iv = phi i32 [ 0, %bb.0 ], [ %iv.next, %bb.3 ] |
| br i1 %cond, label %bb.3, label %bb.2 |
| |
| bb.2: ; preds = %bb.1 |
| %single.pred = phi i32 [ %iv, %bb.1 ] |
| %mult = mul i32 %single.pred, 3 |
| br label %bb.3 |
| |
| bb.3: ; preds = %bb.2, %bb.1 |
| %stored.value = phi i32 [ 7, %bb.1 ], [ %mult, %bb.2 ] |
| %arrayidx = getelementptr inbounds i32, ptr %arr, i32 %iv |
| store i32 %stored.value, ptr %arrayidx |
| %iv.next = add i32 %iv, 1 |
| %continue = icmp ult i32 %iv.next, 32 |
| br i1 %continue, label %bb.1, label %bb.4 |
| |
| bb.4: ; preds = %bb.3 |
| ret void |
| } |
