Mercurial > hg > Members > tobaru > cbc > CbC_llvm
view test/CodeGen/AArch64/arm64-fixed-point-scalar-cvt-dagcombine.ll @ 83:60c9769439b8
LLVM 3.7
author | Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp> |
---|---|
date | Wed, 18 Feb 2015 14:55:36 +0900 |
parents | 54457678186b |
children | 1172e4bd9c6f |
line wrap: on
line source
; RUN: llc < %s -march=arm64 -aarch64-neon-syntax=apple | FileCheck %s ; DAGCombine to transform a conversion of an extract_vector_elt to an ; extract_vector_elt of a conversion, which saves a round trip of copies ; of the value to a GPR and back to and FPR. ; rdar://11855286 define double @foo0(<2 x i64> %a) nounwind { ; CHECK: scvtf.2d [[REG:v[0-9]+]], v0, #9 ; CHECK-NEXT: mov d0, [[REG]][1] %vecext = extractelement <2 x i64> %a, i32 1 %fcvt_n = tail call double @llvm.aarch64.neon.vcvtfxs2fp.f64.i64(i64 %vecext, i32 9) ret double %fcvt_n } declare double @llvm.aarch64.neon.vcvtfxs2fp.f64.i64(i64, i32) nounwind readnone