; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 ; RUN: llc < %s -mtriple=riscv64 -mattr=+v | FileCheck %s declare i64 @llvm.vscale.i64() declare float @llvm.vector.reduce.fadd.nxv4f32(float, ) define float @reduce_fadd(ptr %f) { ; CHECK-LABEL: reduce_fadd: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: csrr a2, vlenb ; CHECK-NEXT: srli a1, a2, 1 ; CHECK-NEXT: vsetvli a3, zero, e32, m1, ta, ma ; CHECK-NEXT: vmv.s.x v8, zero ; CHECK-NEXT: slli a2, a2, 1 ; CHECK-NEXT: li a3, 1024 ; CHECK-NEXT: .LBB0_1: # %vector.body ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 ; CHECK-NEXT: vl2re32.v v10, (a0) ; CHECK-NEXT: vsetvli a4, zero, e32, m2, ta, ma ; CHECK-NEXT: vfredosum.vs v8, v10, v8 ; CHECK-NEXT: sub a3, a3, a1 ; CHECK-NEXT: add a0, a0, a2 ; CHECK-NEXT: bnez a3, .LBB0_1 ; CHECK-NEXT: # %bb.2: # %exit ; CHECK-NEXT: vfmv.f.s fa0, v8 ; CHECK-NEXT: ret entry: %vscale = tail call i64 @llvm.vscale.i64() %vecsize = shl nuw nsw i64 %vscale, 2 br label %vector.body vector.body: %index = phi i64 [ 0, %entry ], [ %index.next, %vector.body ] %vec.phi = phi float [ 0.000000e+00, %entry ], [ %acc, %vector.body ] %gep = getelementptr inbounds float, ptr %f, i64 %index %wide.load = load , ptr %gep, align 4 %acc = tail call float @llvm.vector.reduce.fadd.nxv4f32(float %vec.phi, %wide.load) %index.next = add nuw i64 %index, %vecsize %done = icmp eq i64 %index.next, 1024 br i1 %done, label %exit, label %vector.body exit: ret float %acc }