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llvm-project/llvm/test/Assembler/thinlto-vtable-summary.ll

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[ThinLTO] Add summary entries for index-based WPD Summary: If LTOUnit splitting is disabled, the module summary analysis computes the summary information necessary to perform single implementation devirtualization during the thin link with the index and no IR. The information collected from the regular LTO IR in the current hybrid WPD algorithm is summarized, including: 1) For vtable definitions, record the function pointers and their offset within the vtable initializer (subsumes the information collected from IR by tryFindVirtualCallTargets). 2) A record for each type metadata summarizing the vtable definitions decorated with that metadata (subsumes the TypeIdentiferMap collected from IR). Also added are the necessary bitcode records, and the corresponding assembly support. The follow-on index-based WPD patch is D55153. Depends on D53890. Reviewers: pcc Subscribers: mehdi_amini, Prazek, inglorion, eraman, steven_wu, dexonsmith, arphaman, llvm-commits Differential Revision: https://reviews.llvm.org/D54815 llvm-svn: 364960
2019-07-03 03:38:02 +08:00
; Test summary parsing of index-based WPD related summary fields
; RUN: llvm-as %s -o - | llvm-dis -o %t.ll
; RUN: grep "^\^" %s >%t2
; RUN: grep "^\^" %t.ll >%t3
; Expect that the summary information is the same after round-trip through
; llvm-as and llvm-dis.
Fix non-portable GNU diff option Summary: This is a fix to revision D68839 and rL375023. This patch substitutes POSIX option "-b" for the non-portable GNU option "--strip-trailing-cr". Reviewers: daltenty, hubert.reinterpretcast Reviewed By: daltenty Subscribers: mehdi_amini, hiraditya, steven_wu, dexonsmith, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69342
2019-10-23 23:11:37 +08:00
; RUN: diff -b %t2 %t3
[ThinLTO] Add summary entries for index-based WPD Summary: If LTOUnit splitting is disabled, the module summary analysis computes the summary information necessary to perform single implementation devirtualization during the thin link with the index and no IR. The information collected from the regular LTO IR in the current hybrid WPD algorithm is summarized, including: 1) For vtable definitions, record the function pointers and their offset within the vtable initializer (subsumes the information collected from IR by tryFindVirtualCallTargets). 2) A record for each type metadata summarizing the vtable definitions decorated with that metadata (subsumes the TypeIdentiferMap collected from IR). Also added are the necessary bitcode records, and the corresponding assembly support. The follow-on index-based WPD patch is D55153. Depends on D53890. Reviewers: pcc Subscribers: mehdi_amini, Prazek, inglorion, eraman, steven_wu, dexonsmith, arphaman, llvm-commits Differential Revision: https://reviews.llvm.org/D54815 llvm-svn: 364960
2019-07-03 03:38:02 +08:00
source_filename = "thinlto-vtable-summary.ll"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-grtev4-linux-gnu"
%struct.A = type { i32 (...)** }
%struct.B = type { %struct.A }
%struct.C = type { %struct.A }
@_ZTV1B = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !1
@_ZTV1C = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.C*, i32)* @_ZN1C1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !2
declare i32 @_ZN1B1fEi(%struct.B*, i32)
declare i32 @_ZN1A1nEi(%struct.A*, i32)
declare i32 @_ZN1C1fEi(%struct.C*, i32)
!0 = !{i64 16, !"_ZTS1A"}
!1 = !{i64 16, !"_ZTS1B"}
!2 = !{i64 16, !"_ZTS1C"}
^0 = module: (path: "<stdin>", hash: (0, 0, 0, 0, 0))
^1 = gv: (name: "_ZN1A1nEi") ; guid = 1621563287929432257
[ThinLTO] Summarize vcall_visibility metadata Summary: Second patch in series to support Safe Whole Program Devirtualization Enablement, see RFC here: http://lists.llvm.org/pipermail/llvm-dev/2019-December/137543.html Summarize vcall_visibility metadata in ThinLTO global variable summary. Depends on D71907. Reviewers: pcc, evgeny777, steven_wu Subscribers: mehdi_amini, Prazek, inglorion, hiraditya, dexonsmith, arphaman, ostannard, llvm-commits, cfe-commits, davidxl Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D71911
2019-12-27 01:31:43 +08:00
^2 = gv: (name: "_ZTV1B", summaries: (variable: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 0, dsoLocal: 0, canAutoHide: 0), varFlags: (readonly: 0, writeonly: 0, constant: 0, vcall_visibility: 0), vTableFuncs: ((virtFunc: ^3, offset: 16), (virtFunc: ^1, offset: 24)), refs: (^3, ^1)))) ; guid = 5283576821522790367
[ThinLTO] Add summary entries for index-based WPD Summary: If LTOUnit splitting is disabled, the module summary analysis computes the summary information necessary to perform single implementation devirtualization during the thin link with the index and no IR. The information collected from the regular LTO IR in the current hybrid WPD algorithm is summarized, including: 1) For vtable definitions, record the function pointers and their offset within the vtable initializer (subsumes the information collected from IR by tryFindVirtualCallTargets). 2) A record for each type metadata summarizing the vtable definitions decorated with that metadata (subsumes the TypeIdentiferMap collected from IR). Also added are the necessary bitcode records, and the corresponding assembly support. The follow-on index-based WPD patch is D55153. Depends on D53890. Reviewers: pcc Subscribers: mehdi_amini, Prazek, inglorion, eraman, steven_wu, dexonsmith, arphaman, llvm-commits Differential Revision: https://reviews.llvm.org/D54815 llvm-svn: 364960
2019-07-03 03:38:02 +08:00
^3 = gv: (name: "_ZN1B1fEi") ; guid = 7162046368816414394
[ThinLTO] Summarize vcall_visibility metadata Summary: Second patch in series to support Safe Whole Program Devirtualization Enablement, see RFC here: http://lists.llvm.org/pipermail/llvm-dev/2019-December/137543.html Summarize vcall_visibility metadata in ThinLTO global variable summary. Depends on D71907. Reviewers: pcc, evgeny777, steven_wu Subscribers: mehdi_amini, Prazek, inglorion, hiraditya, dexonsmith, arphaman, ostannard, llvm-commits, cfe-commits, davidxl Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D71911
2019-12-27 01:31:43 +08:00
^4 = gv: (name: "_ZTV1C", summaries: (variable: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 0, dsoLocal: 0, canAutoHide: 0), varFlags: (readonly: 0, writeonly: 0, constant: 0, vcall_visibility: 0), vTableFuncs: ((virtFunc: ^5, offset: 16), (virtFunc: ^1, offset: 24)), refs: (^1, ^5)))) ; guid = 13624023785555846296
[ThinLTO] Add summary entries for index-based WPD Summary: If LTOUnit splitting is disabled, the module summary analysis computes the summary information necessary to perform single implementation devirtualization during the thin link with the index and no IR. The information collected from the regular LTO IR in the current hybrid WPD algorithm is summarized, including: 1) For vtable definitions, record the function pointers and their offset within the vtable initializer (subsumes the information collected from IR by tryFindVirtualCallTargets). 2) A record for each type metadata summarizing the vtable definitions decorated with that metadata (subsumes the TypeIdentiferMap collected from IR). Also added are the necessary bitcode records, and the corresponding assembly support. The follow-on index-based WPD patch is D55153. Depends on D53890. Reviewers: pcc Subscribers: mehdi_amini, Prazek, inglorion, eraman, steven_wu, dexonsmith, arphaman, llvm-commits Differential Revision: https://reviews.llvm.org/D54815 llvm-svn: 364960
2019-07-03 03:38:02 +08:00
^5 = gv: (name: "_ZN1C1fEi") ; guid = 14876272565662207556
^6 = typeidCompatibleVTable: (name: "_ZTS1A", summary: ((offset: 16, ^2), (offset: 16, ^4))) ; guid = 7004155349499253778
^7 = typeidCompatibleVTable: (name: "_ZTS1B", summary: ((offset: 16, ^2))) ; guid = 6203814149063363976
^8 = typeidCompatibleVTable: (name: "_ZTS1C", summary: ((offset: 16, ^4))) ; guid = 1884921850105019584
[ThinLTO] Compute the basic block count across modules. Summary: Count the per-module number of basic blocks when the module summary is computed and sum them up during Thin LTO indexing. This is used to estimate the working set size under the partial sample PGO. This is split off of D79831. Reviewers: davidxl, espindola Subscribers: emaste, inglorion, hiraditya, MaskRay, steven_wu, dexonsmith, arphaman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D80403
2020-05-22 04:28:24 +08:00
^9 = blockcount: 0