1 ; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -loop-data-prefetch -max-prefetch-iters-ahead=100 -S < %s | FileCheck %s --check-prefix=LARGE_PREFETCH --check-prefix=ALL 2 ; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL 3 ; RUN: opt -mcpu=generic -mtriple=arm64-apple-ios -loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL 4 5 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-n32:64-S128" 6 7 ; ALL-LABEL: @small_stride( 8 define void @small_stride(double* nocapture %a, double* nocapture readonly %b) { 9 entry: 10 br label %for.body 11 12 ; ALL: for.body: 13 for.body: ; preds = %for.body, %entry 14 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 15 %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv 16 ; ALL-NOT: call void @llvm.prefetch 17 %0 = load double, double* %arrayidx, align 8 18 %add = fadd double %0, 1.000000e+00 19 %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv 20 store double %add, double* %arrayidx2, align 8 21 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 22 %exitcond = icmp eq i64 %indvars.iv.next, 1600 23 br i1 %exitcond, label %for.end, label %for.body 24 25 ; ALL: for.end: 26 for.end: ; preds = %for.body 27 ret void 28 } 29 30 ; ALL-LABEL: @large_stride( 31 define void @large_stride(double* nocapture %a, double* nocapture readonly %b) { 32 entry: 33 br label %for.body 34 35 ; ALL: for.body: 36 for.body: ; preds = %for.body, %entry 37 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 38 %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv 39 ; LARGE_PREFETCH: call void @llvm.prefetch 40 ; NO_LARGE_PREFETCH-NOT: call void @llvm.prefetch 41 %0 = load double, double* %arrayidx, align 8 42 %add = fadd double %0, 1.000000e+00 43 %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv 44 store double %add, double* %arrayidx2, align 8 45 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 300 46 %exitcond = icmp eq i64 %indvars.iv.next, 160000 47 br i1 %exitcond, label %for.end, label %for.body 48 49 ; ALL: for.end: 50 for.end: ; preds = %for.body 51 ret void 52 } 53
