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test/Transforms/LoopVectorize/tbaa-nodep.ll
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| 1 | ; RUN: opt < %s -tbaa -basicaa -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -simplifycfg -S | FileCheck %s | ||||
|---|---|---|---|---|---|
| 2 | ; RUN: opt < %s -basicaa -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -simplifycfg -S | FileCheck %s --check-prefix=CHECK-NOTBAA | ||||
| 3 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" | ||||
| 4 | target triple = "x86_64-unknown-linux-gnu" | ||||
| 5 | | ||||
| 6 | ; Function Attrs: nounwind uwtable | ||||
| 7 | define i32 @test1(i32* nocapture %a, float* nocapture readonly %b) #0 { | ||||
| 8 | entry: | ||||
| 9 | br label %for.body | ||||
| 10 | | ||||
| 11 | for.body: ; preds = %for.body, %entry | ||||
| 12 | %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] | ||||
| 13 | %arrayidx = getelementptr inbounds float* %b, i64 %indvars.iv | ||||
| 14 | %0 = load float* %arrayidx, align 4, !tbaa !0 | ||||
| 15 | %conv = fptosi float %0 to i32 | ||||
| 16 | %arrayidx2 = getelementptr inbounds i32* %a, i64 %indvars.iv | ||||
| 17 | store i32 %conv, i32* %arrayidx2, align 4, !tbaa !4 | ||||
| 18 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 | ||||
| 19 | %exitcond = icmp eq i64 %indvars.iv.next, 1600 | ||||
| 20 | br i1 %exitcond, label %for.end, label %for.body | ||||
| 21 | | ||||
| 22 | for.end: ; preds = %for.body | ||||
| 23 | ret i32 0 | ||||
| 24 | | ||||
| 25 | ; TBAA partitions the accesses in this loop, so it can be vectorized without | ||||
| 26 | ; runtime checks. | ||||
| 27 | | ||||
| 28 | ; CHECK-LABEL: @test1 | ||||
| 29 | ; CHECK: entry: | ||||
| 30 | ; CHECK-NEXT: br label %vector.body | ||||
| 31 | ; CHECK: vector.body: | ||||
| 32 | | ||||
| 33 | ; CHECK: load <4 x float>* %{{.*}}, align 4, !tbaa | ||||
| 34 | ; CHECK: store <4 x i32> %{{.*}}, <4 x i32>* %{{.*}}, align 4, !tbaa | ||||
| 35 | | ||||
| 36 | ; CHECK: ret i32 0 | ||||
| 37 | | ||||
| 38 | ; CHECK-NOTBAA-LABEL: @test1 | ||||
| 39 | ; CHECK-NOTBAA: icmp uge i32* | ||||
| 40 | | ||||
| 41 | ; CHECK-NOTBAA: load <4 x float>* %{{.*}}, align 4, !tbaa | ||||
| 42 | ; CHECK-NOTBAA: store <4 x i32> %{{.*}}, <4 x i32>* %{{.*}}, align 4, !tbaa | ||||
| 43 | | ||||
| 44 | ; CHECK-NOTBAA: ret i32 0 | ||||
| 45 | } | ||||
| 46 | | ||||
| 47 | ; Function Attrs: nounwind uwtable | ||||
| 48 | define i32 @test2(i32* nocapture readonly %a, float* nocapture readonly %b, float* nocapture %c) #0 { | ||||
| 49 | entry: | ||||
| 50 | br label %for.body | ||||
| 51 | | ||||
| 52 | for.body: ; preds = %for.body, %entry | ||||
| 53 | %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] | ||||
| 54 | %arrayidx = getelementptr inbounds float* %b, i64 %indvars.iv | ||||
| 55 | %0 = load float* %arrayidx, align 4, !tbaa !0 | ||||
| 56 | %arrayidx2 = getelementptr inbounds i32* %a, i64 %indvars.iv | ||||
| 57 | %1 = load i32* %arrayidx2, align 4, !tbaa !4 | ||||
| 58 | %conv = sitofp i32 %1 to float | ||||
| 59 | %mul = fmul float %0, %conv | ||||
| 60 | %arrayidx4 = getelementptr inbounds float* %c, i64 %indvars.iv | ||||
| 61 | store float %mul, float* %arrayidx4, align 4, !tbaa !0 | ||||
| 62 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 | ||||
| 63 | %exitcond = icmp eq i64 %indvars.iv.next, 1600 | ||||
| 64 | br i1 %exitcond, label %for.end, label %for.body | ||||
| 65 | | ||||
| 66 | for.end: ; preds = %for.body | ||||
| 67 | ret i32 0 | ||||
| 68 | | ||||
| 69 | ; This test is like the first, except here there is still one runtime check | ||||
| 70 | ; required. Without TBAA, however, two checks are required. | ||||
| 71 | | ||||
| 72 | ; CHECK-LABEL: @test2 | ||||
| 73 | ; CHECK: icmp uge float* | ||||
| 74 | ; CHECK: icmp uge float* | ||||
| 75 | ; CHECK-NOT: icmp uge i32* | ||||
| 76 | | ||||
| 77 | ; CHECK: load <4 x float>* %{{.*}}, align 4, !tbaa | ||||
| 78 | ; CHECK: store <4 x float> %{{.*}}, <4 x float>* %{{.*}}, align 4, !tbaa | ||||
| 79 | | ||||
| 80 | ; CHECK: ret i32 0 | ||||
| 81 | | ||||
| 82 | ; CHECK-NOTBAA-LABEL: @test2 | ||||
| 83 | ; CHECK-NOTBAA: icmp uge float* | ||||
| 84 | ; CHECK-NOTBAA: icmp uge float* | ||||
| 85 | ; CHECK-NOTBAA-DAG: icmp uge float* | ||||
| 86 | ; CHECK-NOTBAA-DAG: icmp uge i32* | ||||
| 87 | | ||||
| 88 | ; CHECK-NOTBAA: load <4 x float>* %{{.*}}, align 4, !tbaa | ||||
| 89 | ; CHECK-NOTBAA: store <4 x float> %{{.*}}, <4 x float>* %{{.*}}, align 4, !tbaa | ||||
| 90 | | ||||
| 91 | ; CHECK-NOTBAA: ret i32 0 | ||||
| 92 | } | ||||
| 93 | | ||||
| 94 | attributes #0 = { nounwind uwtable } | ||||
| 95 | | ||||
| 96 | !0 = metadata !{metadata !1, metadata !1, i64 0} | ||||
| 97 | !1 = metadata !{metadata !"float", metadata !2, i64 0} | ||||
| 98 | !2 = metadata !{metadata !"omnipotent char", metadata !3, i64 0} | ||||
| 99 | !3 = metadata !{metadata !"Simple C/C++ TBAA"} | ||||
| 100 | !4 = metadata !{metadata !5, metadata !5, i64 0} | ||||
| 101 | !5 = metadata !{metadata !"int", metadata !2, i64 0} | ||||
| 102 | | ||||