1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 2; RUN: llc < %s -mtriple=riscv64 -mattr=+v | FileCheck %s 3 4declare i64 @llvm.vscale.i64() 5declare float @llvm.vector.reduce.fadd.nxv4f32(float, <vscale x 4 x float>) 6 7define float @reduce_fadd(ptr %f) { 8; CHECK-LABEL: reduce_fadd: 9; CHECK: # %bb.0: # %entry 10; CHECK-NEXT: csrr a2, vlenb 11; CHECK-NEXT: vsetvli a1, zero, e32, m1, ta, ma 12; CHECK-NEXT: vmv.s.x v8, zero 13; CHECK-NEXT: srli a1, a2, 1 14; CHECK-NEXT: slli a2, a2, 1 15; CHECK-NEXT: li a3, 1024 16; CHECK-NEXT: .LBB0_1: # %vector.body 17; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 18; CHECK-NEXT: vl2re32.v v10, (a0) 19; CHECK-NEXT: sub a3, a3, a1 20; CHECK-NEXT: vsetvli a4, zero, e32, m2, ta, ma 21; CHECK-NEXT: vfredosum.vs v8, v10, v8 22; CHECK-NEXT: add a0, a0, a2 23; CHECK-NEXT: bnez a3, .LBB0_1 24; CHECK-NEXT: # %bb.2: # %exit 25; CHECK-NEXT: vfmv.f.s fa0, v8 26; CHECK-NEXT: ret 27entry: 28 %vscale = tail call i64 @llvm.vscale.i64() 29 %vecsize = shl nuw nsw i64 %vscale, 2 30 br label %vector.body 31 32vector.body: 33 %index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ] 34 %vec.phi = phi float [ 0.000000e+00, %entry ], [ %acc, %vector.body ] 35 %gep = getelementptr inbounds float, ptr %f, i64 %index 36 %wide.load = load <vscale x 4 x float>, ptr %gep, align 4 37 %acc = tail call float @llvm.vector.reduce.fadd.nxv4f32(float %vec.phi, <vscale x 4 x float> %wide.load) 38 %index.next = add nuw i64 %index, %vecsize 39 %done = icmp eq i64 %index.next, 1024 40 br i1 %done, label %exit, label %vector.body 41 42exit: 43 ret float %acc 44} 45