| Haicheng Wu | a783bac | 2016-06-21 22:47:56 +0000 | [diff] [blame^] | 1 | ; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -loop-data-prefetch -max-prefetch-iters-ahead=1000 -S < %s | FileCheck %s --check-prefix=LARGE_PREFETCH --check-prefix=ALL |
| 2 | ; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL |
| 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-n32:64-S128" |
| 5 | |
| 6 | ; ALL-LABEL: @small_stride( |
| 7 | define void @small_stride(double* nocapture %a, double* nocapture readonly %b) { |
| 8 | entry: |
| 9 | br label %for.body |
| 10 | |
| 11 | ; ALL: for.body: |
| 12 | for.body: ; preds = %for.body, %entry |
| 13 | %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| 14 | %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv |
| 15 | ; ALL-NOT: call void @llvm.prefetch |
| 16 | %0 = load double, double* %arrayidx, align 8 |
| 17 | %add = fadd double %0, 1.000000e+00 |
| 18 | %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv |
| 19 | store double %add, double* %arrayidx2, align 8 |
| 20 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| 21 | %exitcond = icmp eq i64 %indvars.iv.next, 1600 |
| 22 | br i1 %exitcond, label %for.end, label %for.body |
| 23 | |
| 24 | ; ALL: for.end: |
| 25 | for.end: ; preds = %for.body |
| 26 | ret void |
| 27 | } |
| 28 | |
| 29 | ; ALL-LABEL: @large_stride( |
| 30 | define void @large_stride(double* nocapture %a, double* nocapture readonly %b) { |
| 31 | entry: |
| 32 | br label %for.body |
| 33 | |
| 34 | ; ALL: for.body: |
| 35 | for.body: ; preds = %for.body, %entry |
| 36 | %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| 37 | %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv |
| 38 | ; LARGE_PREFETCH: call void @llvm.prefetch |
| 39 | ; NO_LARGE_PREFETCH-NOT: call void @llvm.prefetch |
| 40 | %0 = load double, double* %arrayidx, align 8 |
| 41 | %add = fadd double %0, 1.000000e+00 |
| 42 | %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv |
| 43 | store double %add, double* %arrayidx2, align 8 |
| 44 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 150 |
| 45 | %exitcond = icmp eq i64 %indvars.iv.next, 160000 |
| 46 | br i1 %exitcond, label %for.end, label %for.body |
| 47 | |
| 48 | ; ALL: for.end: |
| 49 | for.end: ; preds = %for.body |
| 50 | ret void |
| 51 | } |