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 Bits 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:%.*]] = tail call <4 x float> @llvm.x86.vcvtph2ps.128(<8 x i16> %A) 15; CHECK-NEXT: ret <4 x float> [[TMP1]] 16; 17 %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> 18 %2 = tail call <4 x float> @llvm.x86.vcvtph2ps.128(<8 x i16> %1) 19 ret <4 x float> %2 20} 21 22; All 8 elements required. 23define <8 x float> @demand_vcvtph2ps_256(<8 x i16> %A) { 24; CHECK-LABEL: @demand_vcvtph2ps_256( 25; 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> 26; CHECK-NEXT: [[TMP2:%.*]] = tail call <8 x float> @llvm.x86.vcvtph2ps.256(<8 x i16> [[TMP1]]) 27; CHECK-NEXT: ret <8 x float> [[TMP2]] 28; 29 %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> 30 %2 = tail call <8 x float> @llvm.x86.vcvtph2ps.256(<8 x i16> %1) 31 ret <8 x float> %2 32} 33 34; 35; Constant Folding 36; 37 38define <4 x float> @fold_vcvtph2ps_128() { 39; CHECK-LABEL: @fold_vcvtph2ps_128( 40; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float 5.000000e-01, float 1.000000e+00, float -0.000000e+00> 41; 42 %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>) 43 ret <4 x float> %1 44} 45 46define <8 x float> @fold_vcvtph2ps_256() { 47; CHECK-LABEL: @fold_vcvtph2ps_256( 48; 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> 49; 50 %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>) 51 ret <8 x float> %1 52} 53 54define <4 x float> @fold_vcvtph2ps_128_zero() { 55; CHECK-LABEL: @fold_vcvtph2ps_128_zero( 56; CHECK-NEXT: ret <4 x float> zeroinitializer 57; 58 %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>) 59 ret <4 x float> %1 60} 61 62define <8 x float> @fold_vcvtph2ps_256_zero() { 63; CHECK-LABEL: @fold_vcvtph2ps_256_zero( 64; CHECK-NEXT: ret <8 x float> zeroinitializer 65; 66 %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>) 67 ret <8 x float> %1 68} 69