67 lines
2.1 KiB
LLVM
67 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=aarch64 -mattr=+v8.9a --global-isel=0 < %s | FileCheck %s
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; RUN: llc -mtriple=aarch64 -mattr=+v8.9a --global-isel=1 --global-isel-abort=1 < %s | FileCheck %s
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@a = internal global ptr null, align 8
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@b = external global ptr, align 8
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define void @test(ptr %i, i32 %j) nounwind ssp {
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entry:
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; CHECK-LABEL: @test
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%j.addr = alloca i32, align 4
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store i32 %j, ptr %j.addr, align 4, !tbaa !0
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%tmp = bitcast ptr %j.addr to ptr
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%i.next = getelementptr i8, ptr %i, i64 2
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; Verify prefetching works for all the different kinds of pointers we might
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; want to prefetch.
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; CHECK: prfm pldl1keep,
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call void @llvm.aarch64.prefetch(ptr null, i32 0, i32 0, i32 0, i32 1)
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; CHECK: prfum pldl1keep,
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call void @llvm.aarch64.prefetch(ptr %tmp, i32 0, i32 0, i32 0, i32 1)
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; CHECK: prfm pldl1keep,
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call void @llvm.aarch64.prefetch(ptr %i, i32 0, i32 0, i32 0, i32 1)
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; CHECK: prfum pldl1keep,
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call void @llvm.aarch64.prefetch(ptr %i.next, i32 0, i32 0, i32 0, i32 1)
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; CHECK: prfm pldl1keep,
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call void @llvm.aarch64.prefetch(ptr @a, i32 0, i32 0, i32 0, i32 1)
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; CHECK: prfm pldl1keep,
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call void @llvm.aarch64.prefetch(ptr @b, i32 0, i32 0, i32 0, i32 1)
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; Verify that we can generate every single valid prefetch value.
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; CHECK: prfm pstl1keep,
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call void @llvm.aarch64.prefetch(ptr null, i32 1, i32 0, i32 0, i32 1)
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; CHECK: prfm pldl2keep,
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call void @llvm.aarch64.prefetch(ptr null, i32 0, i32 1, i32 0, i32 1)
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; CHECK: prfm pldl3keep,
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call void @llvm.aarch64.prefetch(ptr null, i32 0, i32 2, i32 0, i32 1)
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; CHECK: prfm pldslckeep,
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call void @llvm.aarch64.prefetch(ptr null, i32 0, i32 3, i32 0, i32 1)
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; CHECK: prfm pldl1strm,
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call void @llvm.aarch64.prefetch(ptr null, i32 0, i32 0, i32 1, i32 1)
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; CHECK: prfm plil1keep,
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call void @llvm.aarch64.prefetch(ptr null, i32 0, i32 0, i32 0, i32 0)
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ret void
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}
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declare void @llvm.aarch64.prefetch(ptr readonly, i32 immarg, i32 immarg, i32 immarg, i32 immarg) #0
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attributes #0 = { inaccessiblemem_or_argmemonly nounwind willreturn }
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!0 = !{!"int", !1}
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!1 = !{!"omnipotent char", !2}
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!2 = !{!"Simple C/C++ TBAA"}
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!3 = !{!"any pointer", !1}
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