1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -instcombine -S | FileCheck %s 3 4declare <4 x float> @llvm.x86.vcvtph2ps.128(<8 x i16>) 5declare <8 x float> @llvm.x86.vcvtph2ps.256(<8 x i16>) 6 7; 8; Vector Demanded Elts 9; 10 11; Only bottom 4 elements required. 12define <4 x float> @demand_vcvtph2ps_128(<8 x i16> %A) { 13; CHECK-LABEL: @demand_vcvtph2ps_128( 14; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <8 x i16> [[A:%.*]], <8 x i16> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> 15; CHECK-NEXT: [[TMP2:%.*]] = bitcast <4 x i16> [[TMP1]] to <4 x half> 16; CHECK-NEXT: [[CVTPH2PS:%.*]] = fpext <4 x half> [[TMP2]] to <4 x float> 17; CHECK-NEXT: ret <4 x float> [[CVTPH2PS]] 18; 19 %1 = shufflevector <8 x i16> %A, <8 x i16> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3> 20 %2 = tail call <4 x float> @llvm.x86.vcvtph2ps.128(<8 x i16> %1) 21 ret <4 x float> %2 22} 23 24; All 8 elements required. 25define <8 x float> @demand_vcvtph2ps_256(<8 x i16> %A) { 26; CHECK-LABEL: @demand_vcvtph2ps_256( 27; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <8 x i16> [[A:%.*]], <8 x i16> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3> 28; CHECK-NEXT: [[TMP2:%.*]] = bitcast <8 x i16> [[TMP1]] to <8 x half> 29; CHECK-NEXT: [[CVTPH2PS:%.*]] = fpext <8 x half> [[TMP2]] to <8 x float> 30; CHECK-NEXT: ret <8 x float> [[CVTPH2PS]] 31; 32 %1 = shufflevector <8 x i16> %A, <8 x i16> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3> 33 %2 = tail call <8 x float> @llvm.x86.vcvtph2ps.256(<8 x i16> %1) 34 ret <8 x float> %2 35} 36 37; 38; Constant Folding 39; 40 41define <4 x float> @fold_vcvtph2ps_128() { 42; CHECK-LABEL: @fold_vcvtph2ps_128( 43; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float 5.000000e-01, float 1.000000e+00, float -0.000000e+00> 44; 45 %1 = tail call <4 x float> @llvm.x86.vcvtph2ps.128(<8 x i16> <i16 0, i16 14336, i16 15360, i16 32768, i16 16384, i16 31743, i16 48128, i16 49152>) 46 ret <4 x float> %1 47} 48 49define <8 x float> @fold_vcvtph2ps_256() { 50; CHECK-LABEL: @fold_vcvtph2ps_256( 51; CHECK-NEXT: ret <8 x float> <float 0.000000e+00, float 5.000000e-01, float 1.000000e+00, float -0.000000e+00, float 2.000000e+00, float 6.550400e+04, float -1.000000e+00, float -2.000000e+00> 52; 53 %1 = tail call <8 x float> @llvm.x86.vcvtph2ps.256(<8 x i16> <i16 0, i16 14336, i16 15360, i16 32768, i16 16384, i16 31743, i16 48128, i16 49152>) 54 ret <8 x float> %1 55} 56 57define <4 x float> @fold_vcvtph2ps_128_zero() { 58; CHECK-LABEL: @fold_vcvtph2ps_128_zero( 59; CHECK-NEXT: ret <4 x float> zeroinitializer 60; 61 %1 = tail call <4 x float> @llvm.x86.vcvtph2ps.128(<8 x i16> <i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>) 62 ret <4 x float> %1 63} 64 65define <8 x float> @fold_vcvtph2ps_256_zero() { 66; CHECK-LABEL: @fold_vcvtph2ps_256_zero( 67; CHECK-NEXT: ret <8 x float> zeroinitializer 68; 69 %1 = tail call <8 x float> @llvm.x86.vcvtph2ps.256(<8 x i16> <i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>) 70 ret <8 x float> %1 71} 72