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      1 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s
      2 
      3 ; CHECK: _A
      4 ; CHECK: vperm2f128 $1
      5 define <8 x float> @A(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
      6 entry:
      7   %shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 0, i32 1, i32 2, i32 3>
      8   ret <8 x float> %shuffle
      9 }
     10 
     11 ; CHECK: _B
     12 ; CHECK: vblendps $240
     13 define <8 x float> @B(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
     14 entry:
     15   %shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
     16   ret <8 x float> %shuffle
     17 }
     18 
     19 ; CHECK: _C
     20 ; CHECK: vperm2f128 $0
     21 define <8 x float> @C(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
     22 entry:
     23   %shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
     24   ret <8 x float> %shuffle
     25 }
     26 
     27 ; CHECK: _D
     28 ; CHECK: vperm2f128 $17
     29 define <8 x float> @D(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
     30 entry:
     31   %shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 4, i32 5, i32 6, i32 7>
     32   ret <8 x float> %shuffle
     33 }
     34 
     35 ; CHECK: _E
     36 ; CHECK: vperm2f128 $17
     37 define <32 x i8> @E(<32 x i8> %a, <32 x i8> %b) nounwind uwtable readnone ssp {
     38 entry:
     39   %shuffle = shufflevector <32 x i8> %a, <32 x i8> %b, <32 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
     40   ret <32 x i8> %shuffle
     41 }
     42 
     43 ; CHECK: _E2
     44 ; CHECK: vperm2f128 $3
     45 define <4 x i64> @E2(<4 x i64> %a, <4 x i64> %b) nounwind uwtable readnone ssp {
     46 entry:
     47   %shuffle = shufflevector <4 x i64> %a, <4 x i64> %b, <4 x i32> <i32 6, i32 7, i32 0, i32 1>
     48   ret <4 x i64> %shuffle
     49 }
     50 
     51 ;;;; Cases with undef indicies mixed in the mask
     52 
     53 ; CHECK: _F
     54 ; CHECK: vperm2f128 $33
     55 define <8 x float> @F(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
     56 entry:
     57   %shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 undef, i32 undef, i32 6, i32 7, i32 undef, i32 9, i32 undef, i32 11>
     58   ret <8 x float> %shuffle
     59 }
     60 
     61 ;;;; Cases we must not select vperm2f128
     62 
     63 ; CHECK: _G
     64 ; CHECK-NOT: vperm2f128
     65 define <8 x float> @G(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
     66 entry:
     67   %shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 undef, i32 undef, i32 6, i32 7, i32 undef, i32 12, i32 undef, i32 15>
     68   ret <8 x float> %shuffle
     69 }
     70