1; RUN: llc < %s -o /dev/null 2 3; This regression test is defending against a use of the wrong interface 4; (EVT::getVectorNumElements()) for a scalable vector. This issue 5; appeared in DAGCombiner::visitINSERT_SUBVECTOR because of the use of 6; getVectorNumElements() on scalable types. 7 8target triple = "aarch64-unknown-linux-gnu" 9attributes #0 = {"target-features"="+sve"} 10 11declare <16 x float> @llvm.vector.extract.v16f32.nxv4f32(<vscale x 4 x float>, i64) 12declare <vscale x 2 x double> @llvm.vector.insert.nxv2f64.v8f64(<vscale x 2 x double>, <8 x double>, i64) 13 14define <vscale x 2 x double> @reproducer_one(<vscale x 4 x float> %vec_a) #0 { 15 %a = call <16 x float> @llvm.vector.extract.v16f32.nxv4f32(<vscale x 4 x float> %vec_a, i64 0) 16 %b = bitcast <16 x float> %a to <8 x double> 17 %retval = call <vscale x 2 x double> @llvm.vector.insert.nxv2f64.v8f64(<vscale x 2 x double> undef, <8 x double> %b, i64 0) 18 ret <vscale x 2 x double> %retval 19} 20 21define <vscale x 2 x double> @reproducer_two(<4 x double> %a, <4 x double> %b) #0 { 22 %concat = shufflevector <4 x double> %a, <4 x double> %b, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 0, i32 1, i32 2, i32 3> 23 %retval = call <vscale x 2 x double> @llvm.vector.insert.nxv2f64.v8f64(<vscale x 2 x double> undef, <8 x double> %concat, i64 0) 24 ret <vscale x 2 x double> %retval 25} 26