1 files changed, 101 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/insert-prefetch.ll b/llvm/test/CodeGen/X86/insert-prefetch.ll
new file mode 100644
index 00000000000..9e77772df77
--- /dev/null
+++ b/llvm/test/CodeGen/X86/insert-prefetch.ll
@@ -0,0 +1,101 @@
+; RUN: llc < %s -prefetch-hints-file=%S/insert-prefetch.afdo | FileCheck %s
+; RUN: llc < %s -prefetch-hints-file=%S/insert-prefetch-other.afdo | FileCheck %s -check-prefix=OTHERS
+;
+; original source, compiled with -O3 -gmlt -fdebug-info-for-profiling:
+; int sum(int* arr, int pos1, int pos2) {
+;   return arr[pos1] + arr[pos2];
+; }
+;
+; NOTE: debug line numbers were adjusted such that the function would start
+; at line 15 (an arbitrary number). The sample profile file format uses
+; offsets from the start of the symbol instead of file-relative line numbers.
+; The .afdo file reflects that - the instructions are offset '1'.
+;
+; ModuleID = 'test.cc'
+source_filename = "test.cc"
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define i32 @sum(i32* %arr, i32 %pos1, i32 %pos2) !dbg !35 !prof !37 {
+entry:
+  %idxprom = sext i32 %pos1 to i64, !dbg !38
+  %arrayidx = getelementptr inbounds i32, i32* %arr, i64 %idxprom, !dbg !38
+  %0 = load i32, i32* %arrayidx, align 4, !dbg !38, !tbaa !39
+  %idxprom1 = sext i32 %pos2 to i64, !dbg !43
+  %arrayidx2 = getelementptr inbounds i32, i32* %arr, i64 %idxprom1, !dbg !43
+  %1 = load i32, i32* %arrayidx2, align 4, !dbg !43, !tbaa !39
+  %add = add nsw i32 %1, %0, !dbg !44
+  ret i32 %add, !dbg !45
+}
+
+attributes #0 = { "target-cpu"="x86-64" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5, !6}
+!llvm.ident = !{!33}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, debugInfoForProfiling: true)
+!1 = !DIFile(filename: "test.cc", directory: "/tmp")
+!2 = !{}
+!3 = !{i32 2, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{i32 1, !"ProfileSummary", !7}
+!7 = !{!8, !9, !10, !11, !12, !13, !14, !15}
+!8 = !{!"ProfileFormat", !"SampleProfile"}
+!9 = !{!"TotalCount", i64 0}
+!10 = !{!"MaxCount", i64 0}
+!11 = !{!"MaxInternalCount", i64 0}
+!12 = !{!"MaxFunctionCount", i64 0}
+!13 = !{!"NumCounts", i64 2}
+!14 = !{!"NumFunctions", i64 1}
+!15 = !{!"DetailedSummary", !16}
+!16 = !{!17, !18, !19, !20, !21, !22, !22, !23, !23, !24, !25, !26, !27, !28, !29, !30, !31, !32}
+!17 = !{i32 10000, i64 0, i32 0}
+!18 = !{i32 100000, i64 0, i32 0}
+!19 = !{i32 200000, i64 0, i32 0}
+!20 = !{i32 300000, i64 0, i32 0}
+!21 = !{i32 400000, i64 0, i32 0}
+!22 = !{i32 500000, i64 0, i32 0}
+!23 = !{i32 600000, i64 0, i32 0}
+!24 = !{i32 700000, i64 0, i32 0}
+!25 = !{i32 800000, i64 0, i32 0}
+!26 = !{i32 900000, i64 0, i32 0}
+!27 = !{i32 950000, i64 0, i32 0}
+!28 = !{i32 990000, i64 0, i32 0}
+!29 = !{i32 999000, i64 0, i32 0}
+!30 = !{i32 999900, i64 0, i32 0}
+!31 = !{i32 999990, i64 0, i32 0}
+!32 = !{i32 999999, i64 0, i32 0}
+!33 = !{!"clang version 7.0.0 (trunk 322593) (llvm/trunk 322526)"}
+!35 = distinct !DISubprogram(name: "sum", linkageName: "sum", scope: !1, file: !1, line: 15, type: !36, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
+!36 = !DISubroutineType(types: !2)
+!37 = !{!"function_entry_count", i64 -1}
+!38 = !DILocation(line: 16, column: 10, scope: !35)
+!39 = !{!40, !40, i64 0}
+!40 = !{!"int", !41, i64 0}
+!41 = !{!"omnipotent char", !42, i64 0}
+!42 = !{!"Simple C++ TBAA"}
+!43 = !DILocation(line: 16, column: 22, scope: !35)
+!44 = !DILocation(line: 16, column: 20, scope: !35)
+!45 = !DILocation(line: 16, column: 3, scope: !35)
+
+;CHECK-LABEL: sum:
+;CHECK:       # %bb.0:
+;CHECK:       prefetchnta 42(%rdi,%rax,4)
+;CHECK-NEXT:  prefetchnta (%rdi,%rax,4)
+;CHECK-NEXT:  movl (%rdi,%rax,4), %eax
+;CHECK-NEXT:  .loc 1 16 20 discriminator 2  # test.cc:16:20
+;CHECK-NEXT:  prefetchnta -1(%rdi,%rcx,4)
+;CHECK-NEXT:  addl (%rdi,%rcx,4), %eax
+;CHECK-NEXT:  .loc 1 16 3                   # test.cc:16:3
+
+;OTHERS-LABEL: sum:
+;OTHERS:       # %bb.0:
+;OTHERS:       prefetcht2 42(%rdi,%rax,4)
+;OTHERS-NEXT:  prefetcht0 (%rdi,%rax,4)
+;OTHERS-NEXT:  movl (%rdi,%rax,4), %eax
+;OTHERS-NEXT:  .loc 1 16 20 discriminator 2  # test.cc:16:20
+;OTHERS-NEXT:  prefetcht1 -1(%rdi,%rcx,4)
+;OTHERS-NEXT:  addl (%rdi,%rcx,4), %eax
+;OTHERS-NEXT:  .loc 1 16 3                   # test.cc:16:3