1 ; REQUIRES: x86-registered-target
3 ; Test devirtualization requiring promotion of local targets.
5 ; Generate split module with summary for hybrid Thin/Regular LTO WPD.
6 ; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t1.o %s
7 ; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t2.o %p/Inputs/devirt2.ll
9 ; Check that we have module flag showing splitting enabled, and that we don't
10 ; generate summary information needed for index-based WPD.
11 ; RUN: llvm-modextract -b -n=0 %t2.o -o %t2.o.0
12 ; RUN: llvm-dis -o - %t2.o.0 | FileCheck %s --check-prefix=ENABLESPLITFLAG --implicit-check-not=vTableFuncs --implicit-check-not=typeidCompatibleVTable
13 ; RUN: llvm-modextract -b -n=1 %t2.o -o %t2.o.1
14 ; RUN: llvm-dis -o - %t2.o.1 | FileCheck %s --check-prefix=ENABLESPLITFLAG --implicit-check-not=vTableFuncs --implicit-check-not=typeidCompatibleVTable
15 ; ENABLESPLITFLAG: !{i32 1, !"EnableSplitLTOUnit", i32 1}
17 ; Generate unsplit module with summary for ThinLTO index-based WPD.
18 ; Force generation of the bitcode index so that we also test lazy metadata
19 ; loader handling of the type metadata.
20 ; RUN: opt -bitcode-mdindex-threshold=0 -thinlto-bc -o %t3.o %s
21 ; RUN: opt -bitcode-mdindex-threshold=0 -thinlto-bc -o %t4.o %p/Inputs/devirt2.ll
23 ; Check that we don't have module flag when splitting not enabled for ThinLTO,
24 ; and that we generate summary information needed for index-based WPD.
25 ; RUN: llvm-dis -o - %t4.o | FileCheck %s --check-prefix=NOENABLESPLITFLAG
26 ; NOENABLESPLITFLAG-DAG: !{i32 1, !"EnableSplitLTOUnit", i32 0}
27 ; NOENABLESPLITFLAG-DAG: [[An:\^[0-9]+]] = gv: (name: "_ZN1A1nEi"
28 ; NOENABLESPLITFLAG-DAG: [[Bf:\^[0-9]+]] = gv: (name: "_ZN1B1fEi"
29 ; NOENABLESPLITFLAG-DAG: [[Cf:\^[0-9]+]] = gv: (name: "_ZN1C1fEi"
30 ; NOENABLESPLITFLAG-DAG: [[Dm:\^[0-9]+]] = gv: (name: "_ZN1D1mEi"
31 ; NOENABLESPLITFLAG-DAG: [[B:\^[0-9]+]] = gv: (name: "_ZTV1B", {{.*}} vTableFuncs: ((virtFunc: [[Bf]], offset: 16), (virtFunc: [[An]], offset: 24)), refs: ([[Bf]], [[An]])
32 ; NOENABLESPLITFLAG-DAG: [[C:\^[0-9]+]] = gv: (name: "_ZTV1C", {{.*}} vTableFuncs: ((virtFunc: [[Cf]], offset: 16), (virtFunc: [[An]], offset: 24)), refs: ([[An]], [[Cf]])
33 ; NOENABLESPLITFLAG-DAG: [[D:\^[0-9]+]] = gv: (name: "_ZTV1D", {{.*}} vTableFuncs: ((virtFunc: [[Dm]], offset: 16)), refs: ([[Dm]])
34 ; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1A", summary: ((offset: 16, [[B]]), (offset: 16, [[C]])))
35 ; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1B", summary: ((offset: 16, [[B]])))
36 ; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1C", summary: ((offset: 16, [[C]])))
37 ; NOENABLESPLITFLAG-DAG: typeidCompatibleVTable: (name: "_ZTS1D", summary: ((offset: 16, [[D]])))
40 ; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -pass-remarks=. \
41 ; RUN: -whole-program-visibility \
42 ; RUN: -wholeprogramdevirt-print-index-based \
44 ; RUN: -r=%t3.o,test,px \
45 ; RUN: -r=%t3.o,_ZTV1B, \
46 ; RUN: -r=%t3.o,_ZTV1C, \
47 ; RUN: -r=%t3.o,_ZTV1D, \
48 ; RUN: -r=%t3.o,_ZN1D1mEi, \
49 ; RUN: -r=%t3.o,test2, \
50 ; RUN: -r=%t4.o,_ZN1B1fEi,p \
51 ; RUN: -r=%t4.o,_ZN1C1fEi,p \
52 ; RUN: -r=%t4.o,_ZN1D1mEi,p \
53 ; RUN: -r=%t4.o,test2,px \
54 ; RUN: -r=%t4.o,_ZTV1B,px \
55 ; RUN: -r=%t4.o,_ZTV1C,px \
56 ; RUN: -r=%t4.o,_ZTV1D,px \
57 ; RUN: -r=%t4.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=REMARK --check-prefix=PRINT
58 ; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
59 ; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
60 ; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-INDEX1
61 ; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-INDEX2
63 ; NM-INDEX1-DAG: U _ZN1A1nEi.llvm.
64 ; NM-INDEX1-DAG: U _ZN1E1mEi.llvm.
65 ; NM-INDEX1-DAG: U _ZN1D1mEi
67 ; NM-INDEX2-DAG: T _ZN1A1nEi.llvm.
68 ; NM-INDEX2-DAG: T _ZN1E1mEi.llvm.
69 ; NM-INDEX2-DAG: W _ZN1D1mEi
70 ; NM-INDEX2-DAG: t _ZN1B1fEi
71 ; NM-INDEX2-DAG: t _ZN1C1fEi
73 ; Index based WPD, distributed backends
74 ; RUN: llvm-lto2 run %t3.o %t4.o -save-temps \
75 ; RUN: -whole-program-visibility \
76 ; RUN: -thinlto-distributed-indexes -wholeprogramdevirt-print-index-based \
78 ; RUN: -r=%t3.o,test,px \
79 ; RUN: -r=%t3.o,_ZTV1B, \
80 ; RUN: -r=%t3.o,_ZTV1C, \
81 ; RUN: -r=%t3.o,_ZTV1D, \
82 ; RUN: -r=%t3.o,_ZN1D1mEi, \
83 ; RUN: -r=%t3.o,test2, \
84 ; RUN: -r=%t4.o,_ZN1B1fEi,p \
85 ; RUN: -r=%t4.o,_ZN1C1fEi,p \
86 ; RUN: -r=%t4.o,_ZN1D1mEi,p \
87 ; RUN: -r=%t4.o,test2,px \
88 ; RUN: -r=%t4.o,_ZTV1B,px \
89 ; RUN: -r=%t4.o,_ZTV1C,px \
90 ; RUN: -r=%t4.o,_ZTV1D,px \
91 ; RUN: -r=%t4.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=PRINT
93 ; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1A1nEi)
94 ; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1E1mEi)
95 ; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1D1mEi)
98 ; RUN: llvm-lto2 run %t1.o %t2.o -save-temps -pass-remarks=. \
99 ; RUN: -whole-program-visibility \
101 ; RUN: -r=%t1.o,test,px \
102 ; RUN: -r=%t1.o,_ZTV1B, \
103 ; RUN: -r=%t1.o,_ZTV1C, \
104 ; RUN: -r=%t1.o,_ZTV1D, \
105 ; RUN: -r=%t1.o,_ZTV1D, \
106 ; RUN: -r=%t1.o,_ZN1D1mEi, \
107 ; RUN: -r=%t1.o,_ZN1D1mEi, \
108 ; RUN: -r=%t1.o,test2, \
109 ; RUN: -r=%t2.o,_ZN1A1nEi,p \
110 ; RUN: -r=%t2.o,_ZN1B1fEi,p \
111 ; RUN: -r=%t2.o,_ZN1C1fEi,p \
112 ; RUN: -r=%t2.o,_ZN1D1mEi,p \
113 ; RUN: -r=%t2.o,_ZN1E1mEi,p \
114 ; RUN: -r=%t2.o,_ZTV1B, \
115 ; RUN: -r=%t2.o,_ZTV1C, \
116 ; RUN: -r=%t2.o,_ZTV1D, \
117 ; RUN: -r=%t2.o,_ZTV1E, \
118 ; RUN: -r=%t2.o,test2,px \
119 ; RUN: -r=%t2.o,_ZN1A1nEi, \
120 ; RUN: -r=%t2.o,_ZN1B1fEi, \
121 ; RUN: -r=%t2.o,_ZN1C1fEi, \
122 ; RUN: -r=%t2.o,_ZN1D1mEi, \
123 ; RUN: -r=%t2.o,_ZN1E1mEi, \
124 ; RUN: -r=%t2.o,_ZTV1B,px \
125 ; RUN: -r=%t2.o,_ZTV1C,px \
126 ; RUN: -r=%t2.o,_ZTV1D,px \
127 ; RUN: -r=%t2.o,_ZTV1E,px 2>&1 | FileCheck %s --check-prefix=REMARK
128 ; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
129 ; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
130 ; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-HYBRID1
131 ; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-HYBRID2
133 ; NM-HYBRID1-DAG: U _ZN1A1nEi.{{[0-9a-f]*}}
134 ; NM-HYBRID1-DAG: U _ZN1E1mEi.{{[0-9a-f]*}}
135 ; NM-HYBRID1-DAG: U _ZN1D1mEi
137 ; NM-HYBRID2-DAG: T _ZN1A1nEi.{{[0-9a-f]*}}
138 ; NM-HYBRID2-DAG: T _ZN1E1mEi.{{[0-9a-f]*}}
139 ; NM-HYBRID2-DAG: W _ZN1D1mEi
140 ; NM-HYBRID2-DAG: T _ZN1B1fEi
141 ; NM-HYBRID2-DAG: T _ZN1C1fEi
143 ; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi
144 ; REMARK-DAG: single-impl: devirtualized a call to _ZN1D1mEi
145 ; We should devirt call to _ZN1E1mEi once in importing module and once
146 ; in original (exporting) module.
147 ; REMARK-DAG: single-impl: devirtualized a call to _ZN1E1mEi
148 ; REMARK-DAG: single-impl: devirtualized a call to _ZN1E1mEi
150 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
151 target triple = "x86_64-grtev4-linux-gnu"
153 %struct.A = type { ptr }
154 %struct.B = type { %struct.A }
155 %struct.C = type { %struct.A }
156 %struct.D = type { ptr }
157 %struct.E = type { ptr }
159 @_ZTV1B = external constant [4 x ptr]
160 @_ZTV1C = external constant [4 x ptr]
161 ;@_ZTV1D = external constant [3 x ptr]
162 @_ZTV1D = linkonce_odr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr undef, ptr @_ZN1D1mEi] }, !type !3
164 define linkonce_odr i32 @_ZN1D1mEi(ptr %this, i32 %a) #0 {
168 ; CHECK-IR1-LABEL: define i32 @test
169 define i32 @test(ptr %obj, ptr %obj2, ptr %obj3, i32 %a) {
171 %vtable = load ptr, ptr %obj
172 %p = call i1 @llvm.type.test(ptr %vtable, metadata !"_ZTS1A")
173 call void @llvm.assume(i1 %p)
174 %fptrptr = getelementptr ptr, ptr %vtable, i32 1
175 %fptr1 = load ptr, ptr %fptrptr, align 8
177 ; Check that the call was devirtualized. Ignore extra character before
178 ; symbol name which would happen if it was promoted during module
179 ; splitting for hybrid WPD.
180 ; CHECK-IR1: %call = tail call i32 @_ZN1A1nEi
181 %call = tail call i32 %fptr1(ptr nonnull %obj, i32 %a)
183 %fptr22 = load ptr, ptr %vtable, align 8
185 ; We still have to call it as virtual.
186 ; CHECK-IR1: %call3 = tail call i32 %fptr22
187 %call3 = tail call i32 %fptr22(ptr nonnull %obj, i32 %call)
189 %vtable2 = load ptr, ptr %obj2
190 %p2 = call i1 @llvm.type.test(ptr %vtable2, metadata !"_ZTS1D")
191 call void @llvm.assume(i1 %p2)
193 %fptr33 = load ptr, ptr %vtable2, align 8
195 ; Check that the call was devirtualized.
196 ; CHECK-IR1: %call4 = tail call i32 @_ZN1D1mEi
197 %call4 = tail call i32 %fptr33(ptr nonnull %obj2, i32 %call3)
199 %call5 = tail call i32 @test2(ptr nonnull %obj3, i32 %call4)
202 ; CHECK-IR1-LABEL: ret i32
205 ; CHECK-IR2: define noundef i32 @test2
206 ; CHECK-IR2-NEXT: entry:
207 ; Check that the call was devirtualized. Ignore extra character before
208 ; symbol name which would happen if it was promoted during module
209 ; splitting for hybrid WPD.
210 ; CHECK-IR2-NEXT: %call4 = tail call i32 @{{.*}}_ZN1E1mEi
212 declare i1 @llvm.type.test(ptr, metadata)
213 declare void @llvm.assume(i1)
214 declare i32 @test2(ptr %obj, i32 %a)
216 attributes #0 = { noinline optnone }
218 !3 = !{i64 16, !"_ZTS1D"}