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llvm-mirror/test/ThinLTO/X86/devirt2.ll
Hans Wennborg 55eac64914 Don't use $ as suffix for symbol names in ThinLTOBitcodeWriter and other places 
Using $ breaks demangling of the symbols. For example,

$ c++filt _Z3foov\$123
_Z3foov$123

This causes problems for developers who would like to see nice stack traces
etc., but also for automatic crash tracking systems which try to organize
crashes based on the stack traces.

Instead, use the period as suffix separator, since Itanium demanglers normally
ignore such suffixes:

$ c++filt _Z3foov.123
foo() [clone .123]

This is already done in some places; try to do it everywhere.

Differential revision: https://reviews.llvm.org/D97484
2021-03-29 13:03:52 +02:00

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; REQUIRES: x86-registered-target
; Test devirtualization requiring promotion of local targets.
; Generate split module with summary for hybrid Thin/Regular LTO WPD.
; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t1.o %s
; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t2.o %p/Inputs/devirt2.ll
; Check that we have module flag showing splitting enabled, and that we don't
; generate summary information needed for index-based WPD.
; RUN: llvm-modextract -b -n=0 %t2.o -o %t2.o.0
; RUN: llvm-dis -o - %t2.o.0 | FileCheck %s --check-prefix=ENABLESPLITFLAG --implicit-check-not=vTableFuncs --implicit-check-not=typeidCompatibleVTable
; RUN: llvm-modextract -b -n=1 %t2.o -o %t2.o.1
; RUN: llvm-dis -o - %t2.o.1 | FileCheck %s --check-prefix=ENABLESPLITFLAG --implicit-check-not=vTableFuncs --implicit-check-not=typeidCompatibleVTable
; ENABLESPLITFLAG: !{i32 1, !"EnableSplitLTOUnit", i32 1}
; Generate unsplit module with summary for ThinLTO index-based WPD.
; Force generation of the bitcode index so that we also test lazy metadata
; loader handling of the type metadata.
; RUN: opt -bitcode-mdindex-threshold=0 -thinlto-bc -o %t3.o %s
; RUN: opt -bitcode-mdindex-threshold=0 -thinlto-bc -o %t4.o %p/Inputs/devirt2.ll
; Check that we don't have module flag when splitting not enabled for ThinLTO,
; and that we generate summary information needed for index-based WPD.
; RUN: llvm-dis -o - %t4.o | FileCheck %s --check-prefix=NOENABLESPLITFLAG
; NOENABLESPLITFLAG-DAG: !{i32 1, !"EnableSplitLTOUnit", i32 0}
; NOENABLESPLITFLAG-DAG: [[An:\^[0-9]+]] = gv: (name: "_ZN1A1nEi"
; NOENABLESPLITFLAG-DAG: [[Bf:\^[0-9]+]] = gv: (name: "_ZN1B1fEi"
; NOENABLESPLITFLAG-DAG: [[Cf:\^[0-9]+]] = gv: (name: "_ZN1C1fEi"
; NOENABLESPLITFLAG-DAG: [[Dm:\^[0-9]+]] = gv: (name: "_ZN1D1mEi"
; NOENABLESPLITFLAG-DAG: [[B:\^[0-9]+]] = gv: (name: "_ZTV1B", {{.*}} vTableFuncs: ((virtFunc: [[Bf]], offset: 16), (virtFunc: [[An]], offset: 24)), refs: ([[Bf]], [[An]])
; NOENABLESPLITFLAG-DAG: [[C:\^[0-9]+]] = gv: (name: "_ZTV1C", {{.*}} vTableFuncs: ((virtFunc: [[Cf]], offset: 16), (virtFunc: [[An]], offset: 24)), refs: ([[An]], [[Cf]])
; NOENABLESPLITFLAG-DAG: [[D:\^[0-9]+]] = gv: (name: "_ZTV1D", {{.*}} vTableFuncs: ((virtFunc: [[Dm]], offset: 16)), refs: ([[Dm]])
; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1A", summary: ((offset: 16, [[B]]), (offset: 16, [[C]])))
; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1B", summary: ((offset: 16, [[B]])))
; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1C", summary: ((offset: 16, [[C]])))
; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1D", summary: ((offset: 16, [[D]])))
; Legacy PM, Index based WPD
; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -pass-remarks=. \
; RUN: -whole-program-visibility \
; RUN: -wholeprogramdevirt-print-index-based \
; RUN: -o %t5 \
; RUN: -r=%t3.o,test,px \
; RUN: -r=%t3.o,_ZTV1B, \
; RUN: -r=%t3.o,_ZTV1C, \
; RUN: -r=%t3.o,_ZTV1D, \
; RUN: -r=%t3.o,_ZN1D1mEi, \
; RUN: -r=%t3.o,test2, \
; RUN: -r=%t4.o,_ZN1B1fEi,p \
; RUN: -r=%t4.o,_ZN1C1fEi,p \
; RUN: -r=%t4.o,_ZN1D1mEi,p \
; RUN: -r=%t4.o,test2,px \
; RUN: -r=%t4.o,_ZTV1B,px \
; RUN: -r=%t4.o,_ZTV1C,px \
; RUN: -r=%t4.o,_ZTV1D,px \
; RUN: -r=%t4.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=REMARK --check-prefix=PRINT
; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-INDEX1
; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-INDEX2
; New PM, Index based WPD
; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -use-new-pm -pass-remarks=. \
; RUN: -whole-program-visibility \
; RUN: -wholeprogramdevirt-print-index-based \
; RUN: -o %t5 \
; RUN: -r=%t3.o,test,px \
; RUN: -r=%t3.o,_ZTV1B, \
; RUN: -r=%t3.o,_ZTV1C, \
; RUN: -r=%t3.o,_ZTV1D, \
; RUN: -r=%t3.o,_ZN1D1mEi, \
; RUN: -r=%t3.o,test2, \
; RUN: -r=%t4.o,_ZN1B1fEi,p \
; RUN: -r=%t4.o,_ZN1C1fEi,p \
; RUN: -r=%t4.o,_ZN1D1mEi,p \
; RUN: -r=%t4.o,test2,px \
; RUN: -r=%t4.o,_ZTV1B,px \
; RUN: -r=%t4.o,_ZTV1C,px \
; RUN: -r=%t4.o,_ZTV1D,px \
; RUN: -r=%t4.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=REMARK --check-prefix=PRINT
; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-INDEX1
; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-INDEX2
; NM-INDEX1-DAG: U _ZN1A1nEi.llvm.
; NM-INDEX1-DAG: U _ZN1E1mEi.llvm.
; NM-INDEX1-DAG: U _ZN1D1mEi
; NM-INDEX2-DAG: T _ZN1A1nEi.llvm.
; NM-INDEX2-DAG: T _ZN1E1mEi.llvm.
; NM-INDEX2-DAG: W _ZN1D1mEi
; NM-INDEX2-DAG: t _ZN1B1fEi
; NM-INDEX2-DAG: t _ZN1C1fEi
; Index based WPD, distributed backends
; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -use-new-pm \
; RUN: -whole-program-visibility \
; RUN: -thinlto-distributed-indexes -wholeprogramdevirt-print-index-based \
; RUN: -o %t5 \
; RUN: -r=%t3.o,test,px \
; RUN: -r=%t3.o,_ZTV1B, \
; RUN: -r=%t3.o,_ZTV1C, \
; RUN: -r=%t3.o,_ZTV1D, \
; RUN: -r=%t3.o,_ZN1D1mEi, \
; RUN: -r=%t3.o,test2, \
; RUN: -r=%t4.o,_ZN1B1fEi,p \
; RUN: -r=%t4.o,_ZN1C1fEi,p \
; RUN: -r=%t4.o,_ZN1D1mEi,p \
; RUN: -r=%t4.o,test2,px \
; RUN: -r=%t4.o,_ZTV1B,px \
; RUN: -r=%t4.o,_ZTV1C,px \
; RUN: -r=%t4.o,_ZTV1D,px \
; RUN: -r=%t4.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=PRINT
; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1A1nEi)
; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1E1mEi)
; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1D1mEi)
; Legacy PM
; RUN: llvm-lto2 run %t1.o %t2.o -save-temps -pass-remarks=. \
; RUN: -whole-program-visibility \
; RUN: -o %t5 \
; RUN: -r=%t1.o,test,px \
; RUN: -r=%t1.o,_ZTV1B, \
; RUN: -r=%t1.o,_ZTV1C, \
; RUN: -r=%t1.o,_ZTV1D, \
; RUN: -r=%t1.o,_ZTV1D, \
; RUN: -r=%t1.o,_ZN1D1mEi, \
; RUN: -r=%t1.o,_ZN1D1mEi, \
; RUN: -r=%t1.o,test2, \
; RUN: -r=%t2.o,_ZN1A1nEi,p \
; RUN: -r=%t2.o,_ZN1B1fEi,p \
; RUN: -r=%t2.o,_ZN1C1fEi,p \
; RUN: -r=%t2.o,_ZN1D1mEi,p \
; RUN: -r=%t2.o,_ZN1E1mEi,p \
; RUN: -r=%t2.o,_ZTV1B, \
; RUN: -r=%t2.o,_ZTV1C, \
; RUN: -r=%t2.o,_ZTV1D, \
; RUN: -r=%t2.o,_ZTV1E, \
; RUN: -r=%t2.o,test2,px \
; RUN: -r=%t2.o,_ZN1A1nEi, \
; RUN: -r=%t2.o,_ZN1B1fEi, \
; RUN: -r=%t2.o,_ZN1C1fEi, \
; RUN: -r=%t2.o,_ZN1D1mEi, \
; RUN: -r=%t2.o,_ZN1E1mEi, \
; RUN: -r=%t2.o,_ZTV1B,px \
; RUN: -r=%t2.o,_ZTV1C,px \
; RUN: -r=%t2.o,_ZTV1D,px \
; RUN: -r=%t2.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=REMARK
; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-HYBRID1
; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-HYBRID2
; New PM
; RUN: llvm-lto2 run %t1.o %t2.o -save-temps -use-new-pm -pass-remarks=. \
; RUN: -whole-program-visibility \
; RUN: -o %t5 \
; RUN: -r=%t1.o,test,px \
; RUN: -r=%t1.o,_ZTV1B, \
; RUN: -r=%t1.o,_ZTV1C, \
; RUN: -r=%t1.o,_ZTV1D, \
; RUN: -r=%t1.o,_ZTV1D, \
; RUN: -r=%t1.o,_ZN1D1mEi, \
; RUN: -r=%t1.o,_ZN1D1mEi, \
; RUN: -r=%t1.o,test2, \
; RUN: -r=%t2.o,_ZN1A1nEi,p \
; RUN: -r=%t2.o,_ZN1B1fEi,p \
; RUN: -r=%t2.o,_ZN1C1fEi,p \
; RUN: -r=%t2.o,_ZN1D1mEi,p \
; RUN: -r=%t2.o,_ZN1E1mEi,p \
; RUN: -r=%t2.o,_ZTV1B, \
; RUN: -r=%t2.o,_ZTV1C, \
; RUN: -r=%t2.o,_ZTV1D, \
; RUN: -r=%t2.o,_ZTV1E, \
; RUN: -r=%t2.o,test2,px \
; RUN: -r=%t2.o,_ZN1A1nEi, \
; RUN: -r=%t2.o,_ZN1B1fEi, \
; RUN: -r=%t2.o,_ZN1C1fEi, \
; RUN: -r=%t2.o,_ZN1D1mEi, \
; RUN: -r=%t2.o,_ZN1E1mEi, \
; RUN: -r=%t2.o,_ZTV1B,px \
; RUN: -r=%t2.o,_ZTV1C,px \
; RUN: -r=%t2.o,_ZTV1D,px \
; RUN: -r=%t2.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=REMARK
; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-HYBRID1
; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-HYBRID2
; NM-HYBRID1-DAG: U _ZN1A1nEi.{{[0-9a-f]*}}
; NM-HYBRID1-DAG: U _ZN1E1mEi.{{[0-9a-f]*}}
; NM-HYBRID1-DAG: U _ZN1D1mEi
; NM-HYBRID2-DAG: T _ZN1A1nEi.{{[0-9a-f]*}}
; NM-HYBRID2-DAG: T _ZN1E1mEi.{{[0-9a-f]*}}
; NM-HYBRID2-DAG: W _ZN1D1mEi
; NM-HYBRID2-DAG: T _ZN1B1fEi
; NM-HYBRID2-DAG: T _ZN1C1fEi
; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi
; REMARK-DAG: single-impl: devirtualized a call to _ZN1D1mEi
; We should devirt call to _ZN1E1mEi once in importing module and once
; in original (exporting) module.
; REMARK-DAG: single-impl: devirtualized a call to _ZN1E1mEi
; REMARK-DAG: single-impl: devirtualized a call to _ZN1E1mEi
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-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 }
%struct.D = type { i32 (...)** }
%struct.E = type { i32 (...)** }
@_ZTV1B = external constant [4 x i8*]
@_ZTV1C = external constant [4 x i8*]
;@_ZTV1D = external constant [3 x i8*]
@_ZTV1D = linkonce_odr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.D*, i32)* @_ZN1D1mEi to i8*)] }, !type !3
define linkonce_odr i32 @_ZN1D1mEi(%struct.D* %this, i32 %a) #0 {
ret i32 0
}
; CHECK-IR1-LABEL: define i32 @test
define i32 @test(%struct.A* %obj, %struct.D* %obj2, %struct.E* %obj3, i32 %a) {
entry:
%0 = bitcast %struct.A* %obj to i8***
%vtable = load i8**, i8*** %0
%1 = bitcast i8** %vtable to i8*
%p = call i1 @llvm.type.test(i8* %1, metadata !"_ZTS1A")
call void @llvm.assume(i1 %p)
%fptrptr = getelementptr i8*, i8** %vtable, i32 1
%2 = bitcast i8** %fptrptr to i32 (%struct.A*, i32)**
%fptr1 = load i32 (%struct.A*, i32)*, i32 (%struct.A*, i32)** %2, align 8
; Check that the call was devirtualized. Ignore extra character before
; symbol name which would happen if it was promoted during module
; splitting for hybrid WPD.
; CHECK-IR1: %call = tail call i32 bitcast (void ()* @{{.*}}_ZN1A1nEi
%call = tail call i32 %fptr1(%struct.A* nonnull %obj, i32 %a)
%3 = bitcast i8** %vtable to i32 (%struct.A*, i32)**
%fptr22 = load i32 (%struct.A*, i32)*, i32 (%struct.A*, i32)** %3, align 8
; We still have to call it as virtual.
; CHECK-IR1: %call3 = tail call i32 %fptr22
%call3 = tail call i32 %fptr22(%struct.A* nonnull %obj, i32 %call)
%4 = bitcast %struct.D* %obj2 to i8***
%vtable2 = load i8**, i8*** %4
%5 = bitcast i8** %vtable2 to i8*
%p2 = call i1 @llvm.type.test(i8* %5, metadata !"_ZTS1D")
call void @llvm.assume(i1 %p2)
%6 = bitcast i8** %vtable2 to i32 (%struct.D*, i32)**
%fptr33 = load i32 (%struct.D*, i32)*, i32 (%struct.D*, i32)** %6, align 8
; Check that the call was devirtualized.
; CHECK-IR1: %call4 = tail call i32 @_ZN1D1mEi
%call4 = tail call i32 %fptr33(%struct.D* nonnull %obj2, i32 %call3)
%call5 = tail call i32 @test2(%struct.E* nonnull %obj3, i32 %call4)
ret i32 %call5
}
; CHECK-IR1-LABEL: ret i32
; CHECK-IR1-LABEL: }
; CHECK-IR2: define i32 @test2
; CHECK-IR2-NEXT: entry:
; Check that the call was devirtualized. Ignore extra character before
; symbol name which would happen if it was promoted during module
; splitting for hybrid WPD.
; CHECK-IR2-NEXT: %call4 = tail call i32 @{{.*}}_ZN1E1mEi
declare i1 @llvm.type.test(i8*, metadata)
declare void @llvm.assume(i1)
declare i32 @test2(%struct.E* %obj, i32 %a)
attributes #0 = { noinline optnone }
!3 = !{i64 16, !"_ZTS1D"}
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