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