xref: /aosp_15_r20/external/llvm/test/CodeGen/ARM/2009-09-20-LiveIntervalsBug.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)

; RUN: llc < %s -mtriple=arm-eabi -mattr=+neon -mcpu=cortex-a9

; PR4986

define arm_aapcs_vfpcc void @foo(i8* nocapture %pBuffer, i32 %numItems) nounwind {
entry:
  br i1 undef, label %return, label %bb.preheader

bb.preheader:                                     ; preds = %entry
  br label %bb

bb:                                               ; preds = %bb, %bb.preheader
  %0 = shufflevector <4 x float> zeroinitializer, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]
  %1 = insertelement <4 x float> %0, float undef, i32 1 ; <<4 x float>> [#uses=1]
  %2 = insertelement <4 x float> %1, float undef, i32 2 ; <<4 x float>> [#uses=1]
  %3 = insertelement <4 x float> %2, float undef, i32 3 ; <<4 x float>> [#uses=1]
  %4 = fmul <4 x float> undef, %3                 ; <<4 x float>> [#uses=1]
  %5 = extractelement <4 x float> %4, i32 3       ; <float> [#uses=1]
  store float %5, float* undef, align 4
  br i1 undef, label %return, label %bb

return:                                           ; preds = %bb, %entry
  ret void
}

define arm_aapcs_vfpcc <4 x float> @bar(i8* nocapture %pBuffer, i32 %numItems) nounwind {
  %1 = shufflevector <4 x float> zeroinitializer, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]
  %2 = insertelement <4 x float> %1, float undef, i32 1 ; <<4 x float>> [#uses=1]
  %3 = insertelement <4 x float> %2, float undef, i32 2 ; <<4 x float>> [#uses=1]
  %4 = insertelement <4 x float> %3, float undef, i32 3 ; <<4 x float>> [#uses=1]
  %5 = shufflevector <4 x float> %4, <4 x float> undef, <2 x i32> <i32 0, i32 1> ; <<2 x float>> [#uses=1]
  %6 = shufflevector <2 x float> %5, <2 x float> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1> ; <<4 x float>> [#uses=1]
  ret <4 x float> %6
}