1 ; RUN: llc < %s -march=arm64 -aarch64-neon-syntax=apple | FileCheck %s 2 3 ; DAGCombine to transform a conversion of an extract_vector_elt to an 4 ; extract_vector_elt of a conversion, which saves a round trip of copies 5 ; of the value to a GPR and back to and FPR. 6 ; rdar://11855286 7 define double @foo0(<2 x i64> %a) nounwind { 8 ; CHECK: scvtf.2d [[REG:v[0-9]+]], v0, #9 9 ; CHECK-NEXT: mov d0, [[REG]][1] 10 %vecext = extractelement <2 x i64> %a, i32 1 11 %fcvt_n = tail call double @llvm.aarch64.neon.vcvtfxs2fp.f64.i64(i64 %vecext, i32 9) 12 ret double %fcvt_n 13 } 14 15 declare double @llvm.aarch64.neon.vcvtfxs2fp.f64.i64(i64, i32) nounwind readnone 16
