1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=riscv64 -mattr=+v | FileCheck %s 3 4; This test checks a regression in the vsetvli insertion pass. We used to 5; prserve the VL on the second vsetvli with ratio e32/m1, when the the last 6; update of VL was the vsetvli with e64/m4. Changing VTYPE here changes VLMAX 7; which may make the original VL invalid. Instead of preserving it we use 0. 8 9define i32 @illegal_preserve_vl(<vscale x 2 x i32> %a, <vscale x 4 x i64> %x, ptr %y) { 10; CHECK-LABEL: illegal_preserve_vl: 11; CHECK: # %bb.0: 12; CHECK-NEXT: vsetvli a1, zero, e64, m4, ta, ma 13; CHECK-NEXT: vadd.vv v12, v12, v12 14; CHECK-NEXT: vsetvli zero, zero, e32, m2, ta, ma 15; CHECK-NEXT: vmv.x.s a1, v8 16; CHECK-NEXT: vs4r.v v12, (a0) 17; CHECK-NEXT: mv a0, a1 18; CHECK-NEXT: ret 19 %index = add <vscale x 4 x i64> %x, %x 20 store <vscale x 4 x i64> %index, ptr %y 21 %elt = extractelement <vscale x 2 x i32> %a, i64 0 22 ret i32 %elt 23} 24