9f8205d9d8
If requested, via the -memprof-report-hinted-sizes option, track the total profiled size of each MIB through the thin link, then report on the corresponding allocation coldness after all cloning is complete. To save size, a different bitcode record type is used for the allocation info when the option is specified, and the sizes are kept separate from the MIBs in the index.
75 lines
3.6 KiB
LLVM
75 lines
3.6 KiB
LLVM
; Promote at most one function and annotate at most one vtable.
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; As a result, only one value (of each relevant kind) shows up in the function
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; summary.
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; RUN: opt -module-summary -icp-max-num-vtables=1 -icp-max-prom=1 %s -o %t.o
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; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s
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; RUN: llvm-dis -o - %t.o | FileCheck %s --check-prefix=DIS
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; Round trip it through llvm-as
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; RUN: llvm-dis -o - %t.o | llvm-as -o - | llvm-dis -o - | FileCheck %s --check-prefix=DIS
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; CHECK: <GLOBALVAL_SUMMARY_BLOCK
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; CHECK-NEXT: <VERSION op0=
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; CHECK-NEXT: <FLAGS op0=0/>
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; The `VALUE_GUID` below represents the "_ZTV4Base" referenced by the instruction
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; that loads vtable pointers.
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; CHECK-NEXT: <VALUE_GUID op0=21 op1=1960855528937986108/>
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; The `VALUE_GUID` below represents the "_ZN4Base4funcEv" referenced by the
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; indirect call instruction.
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; CHECK-NEXT: <VALUE_GUID op0=20 op1=5459407273543877811/>
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; NOTE vtables and functions from Derived class is dropped because
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; `-icp-max-num-vtables` and `-icp-max-prom` are both set to one.
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; <PERMODULE_PROFILE> has the format [valueid, flags, instcount, funcflags,
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; numrefs, rorefcnt, worefcnt,
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; m x valueid,
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; n x (valueid, hotness+tailcall)]
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; CHECK-NEXT: <PERMODULE_PROFILE abbrevid=4 op0=0 op1=0 op2=4 op3=256 op4=1 op5=1 op6=0 op7=21 op8=20 op9=3/>
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; CHECK-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
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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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; Function has one BB and an entry count of 150, so the BB is hot according to
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; ProfileSummary and reflected so in the bitcode (see llvm-dis output).
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define i32 @_Z4testP4Base(ptr %0) !prof !15 {
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%2 = load ptr, ptr %0, !prof !16
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%3 = load ptr, ptr %2
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%4 = tail call i32 %3(ptr %0), !prof !17
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ret i32 %4
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}
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!llvm.module.flags = !{!1}
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!1 = !{i32 1, !"ProfileSummary", !2}
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!2 = !{!3, !4, !5, !6, !7, !8, !9, !10}
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!3 = !{!"ProfileFormat", !"InstrProf"}
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!4 = !{!"TotalCount", i64 10000}
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!5 = !{!"MaxCount", i64 200}
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!6 = !{!"MaxInternalCount", i64 200}
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!7 = !{!"MaxFunctionCount", i64 200}
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!8 = !{!"NumCounts", i64 3}
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!9 = !{!"NumFunctions", i64 3}
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!10 = !{!"DetailedSummary", !11}
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!11 = !{!12, !13, !14}
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!12 = !{i32 10000, i64 100, i32 1}
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!13 = !{i32 990000, i64 100, i32 1}
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!14 = !{i32 999999, i64 1, i32 2}
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!15 = !{!"function_entry_count", i32 150}
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; 1960855528937986108 is the MD5 hash of _ZTV4Base, and
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; 13870436605473471591 is the MD5 hash of _ZTV7Derived
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!16 = !{!"VP", i32 2, i64 150, i64 1960855528937986108, i64 100, i64 13870436605473471591, i64 50}
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; 5459407273543877811 is the MD5 hash of _ZN4Base4funcEv, and
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; 6174874150489409711 is the MD5 hash of _ZN7Derived4funcEv
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!17 = !{!"VP", i32 0, i64 150, i64 5459407273543877811, i64 100, i64 6174874150489409711, i64 50}
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; ModuleSummaryIndex stores <guid, global-value summary> map in std::map; so
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; global value summares are printed out in the order that gv's guid increases.
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; DIS: ^0 = module: (path: "{{.*}}", hash: (0, 0, 0, 0, 0))
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; DIS: ^1 = gv: (guid: 1960855528937986108)
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; DIS: ^2 = gv: (guid: 5459407273543877811)
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; DIS: ^3 = gv: (name: "_Z4testP4Base", summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 0, live: 0, dsoLocal: 0, canAutoHide: 0, importType: definition), insts: 4, funcFlags: (readNone: 0, readOnly: 0, noRecurse: 0, returnDoesNotAlias: 0, noInline: 0, alwaysInline: 0, noUnwind: 0, mayThrow: 0, hasUnknownCall: 1, mustBeUnreachable: 0), calls: ((callee: ^2, hotness: hot)), refs: (readonly ^1)))) ; guid = 15857150948103218965
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; DIS: ^4 = blockcount: 0
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