forked from OSchip/llvm-project
103 lines
3.7 KiB
LLVM
103 lines
3.7 KiB
LLVM
; RUN: opt < %s -tbaa -basicaa -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -simplifycfg -S | FileCheck %s
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; RUN: opt < %s -basicaa -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -simplifycfg -S | FileCheck %s --check-prefix=CHECK-NOTBAA
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: nounwind uwtable
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define i32 @test1(i32* nocapture %a, float* nocapture readonly %b) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float* %b, i64 %indvars.iv
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%0 = load float* %arrayidx, align 4, !tbaa !0
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%conv = fptosi float %0 to i32
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%arrayidx2 = getelementptr inbounds i32* %a, i64 %indvars.iv
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store i32 %conv, i32* %arrayidx2, align 4, !tbaa !4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 1600
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret i32 0
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; TBAA partitions the accesses in this loop, so it can be vectorized without
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; runtime checks.
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; CHECK-LABEL: @test1
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; CHECK: entry:
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; CHECK-NEXT: br label %vector.body
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; CHECK: vector.body:
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; CHECK: load <4 x float>* %{{.*}}, align 4, !tbaa
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; CHECK: store <4 x i32> %{{.*}}, <4 x i32>* %{{.*}}, align 4, !tbaa
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; CHECK: ret i32 0
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; CHECK-NOTBAA-LABEL: @test1
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; CHECK-NOTBAA: icmp uge i32*
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; CHECK-NOTBAA: load <4 x float>* %{{.*}}, align 4, !tbaa
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; CHECK-NOTBAA: store <4 x i32> %{{.*}}, <4 x i32>* %{{.*}}, align 4, !tbaa
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; CHECK-NOTBAA: ret i32 0
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}
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; Function Attrs: nounwind uwtable
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define i32 @test2(i32* nocapture readonly %a, float* nocapture readonly %b, float* nocapture %c) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float* %b, i64 %indvars.iv
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%0 = load float* %arrayidx, align 4, !tbaa !0
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%arrayidx2 = getelementptr inbounds i32* %a, i64 %indvars.iv
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%1 = load i32* %arrayidx2, align 4, !tbaa !4
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%conv = sitofp i32 %1 to float
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%mul = fmul float %0, %conv
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%arrayidx4 = getelementptr inbounds float* %c, i64 %indvars.iv
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store float %mul, float* %arrayidx4, align 4, !tbaa !0
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 1600
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret i32 0
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; This test is like the first, except here there is still one runtime check
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; required. Without TBAA, however, two checks are required.
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; CHECK-LABEL: @test2
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; CHECK: icmp uge float*
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; CHECK: icmp uge float*
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; CHECK-NOT: icmp uge i32*
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; CHECK: load <4 x float>* %{{.*}}, align 4, !tbaa
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; CHECK: store <4 x float> %{{.*}}, <4 x float>* %{{.*}}, align 4, !tbaa
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; CHECK: ret i32 0
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; CHECK-NOTBAA-LABEL: @test2
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; CHECK-NOTBAA: icmp uge float*
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; CHECK-NOTBAA: icmp uge float*
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; CHECK-NOTBAA-DAG: icmp uge float*
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; CHECK-NOTBAA-DAG: icmp uge i32*
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; CHECK-NOTBAA: load <4 x float>* %{{.*}}, align 4, !tbaa
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; CHECK-NOTBAA: store <4 x float> %{{.*}}, <4 x float>* %{{.*}}, align 4, !tbaa
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; CHECK-NOTBAA: ret i32 0
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}
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attributes #0 = { nounwind uwtable }
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!0 = metadata !{metadata !1, metadata !1, i64 0}
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!1 = metadata !{metadata !"float", metadata !2, i64 0}
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!2 = metadata !{metadata !"omnipotent char", metadata !3, i64 0}
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!3 = metadata !{metadata !"Simple C/C++ TBAA"}
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!4 = metadata !{metadata !5, metadata !5, i64 0}
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!5 = metadata !{metadata !"int", metadata !2, i64 0}
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