| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 |
| ; RUN: llc < %s -mtriple=x86_64 -mattr=avx512bw | FileCheck %s |
| |
| ; Verify that the DAGCombiner doesn't change build_vector to concat_vectors if |
| ; the vector element type is different than splat type. The example here: |
| ; v8i1 = build_vector (i8 (bitcast (v8i1 X))), ..., (i8 (bitcast (v8i1 X)))) |
| |
| define <8 x i1> @foo(<8 x i1> %mask.i1) { |
| ; CHECK-LABEL: foo: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0 |
| ; CHECK-NEXT: retq |
| entry: |
| %0 = and <8 x i1> %mask.i1, <i1 true, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false, i1 false> |
| %1 = bitcast <8 x i1> %0 to i8 |
| %2 = icmp ne i8 %1, 0 |
| %insert54 = insertelement <8 x i1> zeroinitializer, i1 %2, i64 0 |
| %splat55 = shufflevector <8 x i1> %insert54, <8 x i1> zeroinitializer, <8 x i32> zeroinitializer |
| %3 = and <8 x i1> %0, %splat55 |
| br label %end |
| |
| end: ; preds = %entry |
| %4 = select <8 x i1> %3, <8 x i1> zeroinitializer, <8 x i1> zeroinitializer |
| ret <8 x i1> %4 |
| } |
