diff options
author | Mingming Liu <mingmingl@google.com> | 2024-04-01 11:47:11 -0700 |
---|---|---|
committer | GitHub <noreply@github.com> | 2024-04-01 11:47:11 -0700 |
commit | f3ec73fca492124b15c3eb9a3ae12b7d86470d27 (patch) | |
tree | 1918b023b339d083ba23e4588608b9824d6b40a9 | |
parent | e45f6e569dafd4033f86d276065d77799b5f6226 (diff) | |
download | llvm-f3ec73fca492124b15c3eb9a3ae12b7d86470d27.zip llvm-f3ec73fca492124b15c3eb9a3ae12b7d86470d27.tar.gz llvm-f3ec73fca492124b15c3eb9a3ae12b7d86470d27.tar.bz2 |
[NFC]Precommit test for vtable import (#79363)
A precommit test case to show function summary and global values when a function has instructions annotated with vtable profiles and indirect call profiles.
- This is a precommit test for https://github.com/llvm/llvm-project/pull/79381
-rw-r--r-- | llvm/test/Bitcode/thinlto-func-summary-vtableref-pgo.ll | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/llvm/test/Bitcode/thinlto-func-summary-vtableref-pgo.ll b/llvm/test/Bitcode/thinlto-func-summary-vtableref-pgo.ll new file mode 100644 index 0000000..78b175c --- /dev/null +++ b/llvm/test/Bitcode/thinlto-func-summary-vtableref-pgo.ll @@ -0,0 +1,61 @@ +; RUN: opt -module-summary %s -o %t.o + +; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s + +; RUN: llvm-dis -o - %t.o | FileCheck %s --check-prefix=DIS + + +; CHECK: <GLOBALVAL_SUMMARY_BLOCK +; CHECK-NEXT: <VERSION op0=9/> +; CHECK-NEXT: <FLAGS op0=0/> +; The `VALUE_GUID` below represents the "_ZN4Base4funcEv" referenced by the +; indirect call instruction. +; CHECK-NEXT: <VALUE_GUID op0=17 op1=5459407273543877811/> +; <PERMODULE_PROFILE> has the format [valueid, flags, instcount, funcflags, +; numrefs, rorefcnt, worefcnt, +; n x (valueid, hotness+tailcall)] +; CHECK-NEXT: <PERMODULE_PROFILE abbrevid=4 op0=0 op1=0 op2=4 op3=256 op4=0 op5=0 op6=0 op7=17 op8=3/> +; CHECK-NEXT: </GLOBALVAL_SUMMARY_BLOCK> + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +; Function has one BB and an entry count of 150, so the BB is hot according to +; ProfileSummary and reflected so in the bitcode (see llvm-dis output). +define i32 @_Z4testP4Base(ptr %0) !prof !15 { + %2 = load ptr, ptr %0, !prof !16 + %3 = load ptr, ptr %2 + %4 = tail call i32 %3(ptr %0), !prof !17 + ret i32 %4 +} + +!llvm.module.flags = !{!1} + + +!1 = !{i32 1, !"ProfileSummary", !2} +!2 = !{!3, !4, !5, !6, !7, !8, !9, !10} +!3 = !{!"ProfileFormat", !"InstrProf"} +!4 = !{!"TotalCount", i64 10000} +!5 = !{!"MaxCount", i64 200} +!6 = !{!"MaxInternalCount", i64 200} +!7 = !{!"MaxFunctionCount", i64 200} +!8 = !{!"NumCounts", i64 3} +!9 = !{!"NumFunctions", i64 3} +!10 = !{!"DetailedSummary", !11} +!11 = !{!12, !13, !14} +!12 = !{i32 10000, i64 100, i32 1} +!13 = !{i32 990000, i64 100, i32 1} +!14 = !{i32 999999, i64 1, i32 2} + +!15 = !{!"function_entry_count", i32 150} +; 1960855528937986108 is the MD5 hash of _ZTV4Base +!16 = !{!"VP", i32 2, i64 1600, i64 1960855528937986108, i64 1600} +; 5459407273543877811 is the MD5 hash of _ZN4Base4funcEv +!17 = !{!"VP", i32 0, i64 1600, i64 5459407273543877811, i64 1600} + +; ModuleSummaryIndex stores <guid, global-value summary> map in std::map; so +; global value summares are printed out in the order that gv's guid increases. +; DIS: ^0 = module: (path: "{{.*}}", hash: (0, 0, 0, 0, 0)) +; DIS: ^1 = gv: (guid: 5459407273543877811) +; DIS: ^2 = gv: (name: "_Z4testP4Base", summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 0, live: 0, dsoLocal: 0, canAutoHide: 0), 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: ^1, hotness: hot))))) ; guid = 15857150948103218965 +; DIS: ^3 = blockcount: 0 |