11674147e4
Keep `EnableLoopDataPrefetch` option off for now because we need a few more TTIs and ISels. This patch is inspired by http://reviews.llvm.org/D17943. Reviewed By: SixWeining Differential Revision: https://reviews.llvm.org/D146600
26 lines
981 B
LLVM
26 lines
981 B
LLVM
;; Tag this 'XFAIL' because we need a few more TTIs and ISels.
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; XFAIL: *
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; RUN: opt --mtriple=loongarch64 --passes=loop-data-prefetch -loongarch-enable-loop-data-prefetch -S < %s | FileCheck %s
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define void @foo(ptr %a, ptr %b) {
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entry:
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br label %for.body
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; CHECK: 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 double, ptr %b, i64 %indvars.iv
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; CHECK: call void @llvm.prefetch
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%0 = load double, ptr %arrayidx, align 8
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%add = fadd double %0, 1.000000e+00
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%arrayidx2 = getelementptr inbounds double, ptr %a, i64 %indvars.iv
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store double %add, ptr %arrayidx2, align 8
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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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; CHECK: for.end:
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for.end: ; preds = %for.body
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ret void
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}
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