1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+avx | FileCheck %s --check-prefix=AVX --check-prefix=AVX1 3 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+avx2 | FileCheck %s --check-prefix=AVX --check-prefix=AVX2 4 5 ; Prefer a blend instruction to a vinsert128 instruction because blends 6 ; are simpler (no lane changes) and therefore will have equal or better 7 ; performance. 8 9 define <8 x float> @castA(<4 x float> %m) nounwind uwtable readnone ssp { 10 ; AVX-LABEL: castA: 11 ; AVX: ## BB#0: 12 ; AVX-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<def> 13 ; AVX-NEXT: vxorps %ymm1, %ymm1, %ymm1 14 ; AVX-NEXT: vblendps {{.*#+}} ymm0 = ymm0[0,1,2,3],ymm1[4,5,6,7] 15 ; AVX-NEXT: retq 16 %shuffle.i = shufflevector <4 x float> %m, <4 x float> zeroinitializer, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 4, i32 4, i32 4> 17 ret <8 x float> %shuffle.i 18 } 19 20 define <4 x double> @castB(<2 x double> %m) nounwind uwtable readnone ssp { 21 ; AVX-LABEL: castB: 22 ; AVX: ## BB#0: 23 ; AVX-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<def> 24 ; AVX-NEXT: vxorpd %ymm1, %ymm1, %ymm1 25 ; AVX-NEXT: vblendpd {{.*#+}} ymm0 = ymm0[0,1],ymm1[2,3] 26 ; AVX-NEXT: retq 27 %shuffle.i = shufflevector <2 x double> %m, <2 x double> zeroinitializer, <4 x i32> <i32 0, i32 1, i32 2, i32 2> 28 ret <4 x double> %shuffle.i 29 } 30 31 ; AVX2 is needed for integer types. 32 33 define <4 x i64> @castC(<2 x i64> %m) nounwind uwtable readnone ssp { 34 ; AVX1-LABEL: castC: 35 ; AVX1: ## BB#0: 36 ; AVX1-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<def> 37 ; AVX1-NEXT: vxorpd %ymm1, %ymm1, %ymm1 38 ; AVX1-NEXT: vblendpd {{.*#+}} ymm0 = ymm0[0,1],ymm1[2,3] 39 ; AVX1-NEXT: retq 40 ; 41 ; AVX2-LABEL: castC: 42 ; AVX2: ## BB#0: 43 ; AVX2-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<def> 44 ; AVX2-NEXT: vpxor %ymm1, %ymm1, %ymm1 45 ; AVX2-NEXT: vpblendd {{.*#+}} ymm0 = ymm0[0,1,2,3],ymm1[4,5,6,7] 46 ; AVX2-NEXT: retq 47 %shuffle.i = shufflevector <2 x i64> %m, <2 x i64> zeroinitializer, <4 x i32> <i32 0, i32 1, i32 2, i32 2> 48 ret <4 x i64> %shuffle.i 49 } 50 51 ; The next three tests don't need any shuffling. There may or may not be a 52 ; vzeroupper before the return, so just check for the absence of shuffles. 53 54 define <4 x float> @castD(<8 x float> %m) nounwind uwtable readnone ssp { 55 ; AVX-LABEL: castD: 56 ; AVX: ## BB#0: 57 ; AVX-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<kill> 58 ; AVX-NEXT: vzeroupper 59 ; AVX-NEXT: retq 60 %shuffle.i = shufflevector <8 x float> %m, <8 x float> %m, <4 x i32> <i32 0, i32 1, i32 2, i32 3> 61 ret <4 x float> %shuffle.i 62 } 63 64 define <2 x i64> @castE(<4 x i64> %m) nounwind uwtable readnone ssp { 65 ; AVX-LABEL: castE: 66 ; AVX: ## BB#0: 67 ; AVX-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<kill> 68 ; AVX-NEXT: vzeroupper 69 ; AVX-NEXT: retq 70 %shuffle.i = shufflevector <4 x i64> %m, <4 x i64> %m, <2 x i32> <i32 0, i32 1> 71 ret <2 x i64> %shuffle.i 72 } 73 74 define <2 x double> @castF(<4 x double> %m) nounwind uwtable readnone ssp { 75 ; AVX-LABEL: castF: 76 ; AVX: ## BB#0: 77 ; AVX-NEXT: ## kill: %XMM0<def> %XMM0<kill> %YMM0<kill> 78 ; AVX-NEXT: vzeroupper 79 ; AVX-NEXT: retq 80 %shuffle.i = shufflevector <4 x double> %m, <4 x double> %m, <2 x i32> <i32 0, i32 1> 81 ret <2 x double> %shuffle.i 82 } 83 84
