1 ; RUN: opt -tbaa -basicaa -gvn -S < %s | FileCheck %s 2 ; PR9971 3 4 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 5 6 %struct.X = type { i32, float } 7 %union.vector_t = type { [2 x i64] } 8 9 ; Don't delete the load after the loop, because it loads values stored 10 ; inside the loop. 11 12 ; CHECK: define void @vrlh( 13 14 ; CHECK: for.end: 15 ; CHECK: %arrayidx31 = getelementptr inbounds %union.vector_t, %union.vector_t* %t, i64 0, i32 0, i64 1 16 ; CHECK: %tmp32 = load i64, i64* %arrayidx31, align 8, !tbaa [[TAG:!.*]] 17 18 define void @vrlh(%union.vector_t* %va, %union.vector_t* %vb, %union.vector_t* %vd) nounwind { 19 entry: 20 %t = alloca %union.vector_t, align 8 21 br label %for.body 22 23 for.body: ; preds = %entry, %for.body 24 %i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 25 %sub = sub nsw i32 7, %i.01 26 %idxprom = sext i32 %sub to i64 27 %half = bitcast %union.vector_t* %vb to [8 x i16]* 28 %arrayidx = getelementptr inbounds [8 x i16], [8 x i16]* %half, i64 0, i64 %idxprom 29 %tmp4 = load i16, i16* %arrayidx, align 2, !tbaa !0 30 %conv = zext i16 %tmp4 to i32 31 %and = and i32 %conv, 15 32 %sub6 = sub nsw i32 7, %i.01 33 %idxprom7 = sext i32 %sub6 to i64 34 %half9 = bitcast %union.vector_t* %va to [8 x i16]* 35 %arrayidx10 = getelementptr inbounds [8 x i16], [8 x i16]* %half9, i64 0, i64 %idxprom7 36 %tmp11 = load i16, i16* %arrayidx10, align 2, !tbaa !0 37 %conv12 = zext i16 %tmp11 to i32 38 %shl = shl i32 %conv12, %and 39 %sub15 = sub nsw i32 7, %i.01 40 %idxprom16 = sext i32 %sub15 to i64 41 %half18 = bitcast %union.vector_t* %va to [8 x i16]* 42 %arrayidx19 = getelementptr inbounds [8 x i16], [8 x i16]* %half18, i64 0, i64 %idxprom16 43 %tmp20 = load i16, i16* %arrayidx19, align 2, !tbaa !0 44 %conv21 = zext i16 %tmp20 to i32 45 %sub23 = sub nsw i32 16, %and 46 %shr = lshr i32 %conv21, %sub23 47 %or = or i32 %shl, %shr 48 %conv24 = trunc i32 %or to i16 49 %sub26 = sub nsw i32 7, %i.01 50 %idxprom27 = sext i32 %sub26 to i64 51 %half28 = bitcast %union.vector_t* %t to [8 x i16]* 52 %arrayidx29 = getelementptr inbounds [8 x i16], [8 x i16]* %half28, i64 0, i64 %idxprom27 53 store i16 %conv24, i16* %arrayidx29, align 2, !tbaa !0 54 %inc = add nsw i32 %i.01, 1 55 %cmp = icmp slt i32 %inc, 8 56 br i1 %cmp, label %for.body, label %for.end 57 58 for.end: ; preds = %for.body 59 %arrayidx31 = getelementptr inbounds %union.vector_t, %union.vector_t* %t, i64 0, i32 0, i64 1 60 %tmp32 = load i64, i64* %arrayidx31, align 8, !tbaa !3 61 %arrayidx35 = getelementptr inbounds %union.vector_t, %union.vector_t* %vd, i64 0, i32 0, i64 1 62 store i64 %tmp32, i64* %arrayidx35, align 8, !tbaa !3 63 %arrayidx37 = getelementptr inbounds %union.vector_t, %union.vector_t* %t, i64 0, i32 0, i64 0 64 %tmp38 = load i64, i64* %arrayidx37, align 8, !tbaa !3 65 %arrayidx41 = getelementptr inbounds %union.vector_t, %union.vector_t* %vd, i64 0, i32 0, i64 0 66 store i64 %tmp38, i64* %arrayidx41, align 8, !tbaa !3 67 ret void 68 } 69 70 ; Do delete the load after the loop. 71 72 ; CHECK: define i32 @test0( 73 74 ; CHECK: ret i32 0 75 76 define i32 @test0(%struct.X* %a) nounwind { 77 entry: 78 %i = getelementptr inbounds %struct.X, %struct.X* %a, i64 0, i32 0 79 store i32 0, i32* %i, align 4, !tbaa !4 80 br label %for.body 81 82 for.body: ; preds = %entry, %for.body 83 %i2.01 = phi i64 [ 0, %entry ], [ %inc, %for.body ] 84 %f = getelementptr inbounds %struct.X, %struct.X* %a, i64 %i2.01, i32 1 85 %tmp6 = load float, float* %f, align 4, !tbaa !5 86 %mul = fmul float %tmp6, 0x40019999A0000000 87 store float %mul, float* %f, align 4, !tbaa !5 88 %inc = add nsw i64 %i2.01, 1 89 %cmp = icmp slt i64 %inc, 10000 90 br i1 %cmp, label %for.body, label %for.end 91 92 for.end: ; preds = %for.body 93 %i9 = getelementptr inbounds %struct.X, %struct.X* %a, i64 0, i32 0 94 %tmp10 = load i32, i32* %i9, align 4, !tbaa !4 95 ret i32 %tmp10 96 } 97 98 ; Do delete the load after the loop. 99 100 ; CHECK: define float @test1( 101 102 ; CHECK: ret float 0x3FD3333340000000 103 104 define float @test1(%struct.X* %a) nounwind { 105 entry: 106 %f = getelementptr inbounds %struct.X, %struct.X* %a, i64 0, i32 1 107 store float 0x3FD3333340000000, float* %f, align 4, !tbaa !5 108 br label %for.body 109 110 for.body: ; preds = %entry, %for.body 111 %i.01 = phi i64 [ 0, %entry ], [ %inc, %for.body ] 112 %i5 = getelementptr inbounds %struct.X, %struct.X* %a, i64 %i.01, i32 0 113 %tmp6 = load i32, i32* %i5, align 4, !tbaa !4 114 %mul = mul nsw i32 %tmp6, 3 115 store i32 %mul, i32* %i5, align 4, !tbaa !4 116 %inc = add nsw i64 %i.01, 1 117 %cmp = icmp slt i64 %inc, 10000 118 br i1 %cmp, label %for.body, label %for.end 119 120 for.end: ; preds = %for.body 121 %f9 = getelementptr inbounds %struct.X, %struct.X* %a, i64 0, i32 1 122 %tmp10 = load float, float* %f9, align 4, !tbaa !5 123 ret float %tmp10 124 } 125 126 ; CHECK: [[TAG]] = !{[[TYPE_LL:!.*]], [[TYPE_LL]], i64 0} 127 ; CHECK: [[TYPE_LL]] = !{!"long long", {{!.*}}} 128 !0 = !{!6, !6, i64 0} 129 !1 = !{!"omnipotent char", !2} 130 !2 = !{!"Simple C/C++ TBAA", null} 131 !3 = !{!7, !7, i64 0} 132 !4 = !{!8, !8, i64 0} 133 !5 = !{!9, !9, i64 0} 134 !6 = !{!"short", !1} 135 !7 = !{!"long long", !1} 136 !8 = !{!"int", !1} 137 !9 = !{!"float", !1} 138