1 ; -stats requires asserts
4 ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -stats %s 2>&1 | FileCheck %s
5 ; Skipping vf0i1 is identical to setting public LTO visibility. We don't devirtualize vf0i1 and all other
6 ; virtual call targets.
7 ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf0i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP
8 ; We have two set of call targets {vf0i1, vf1i1} and {vf1i32, vf2i32, vf3i32, vf4i32}.
9 ; The command below prevents both of them from devirtualization.
10 ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf0i1,vf1i32 %s 2>&1 | FileCheck %s --check-prefix=SKIP-ALL
12 ; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf?i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP
14 target datalayout = "e-p:64:64"
15 target triple = "x86_64-unknown-linux-gnu"
17 ; CHECK: remark: <unknown>:0:0: virtual-const-prop-1-bit: devirtualized a call to vf0i1
18 ; CHECK: remark: <unknown>:0:0: virtual-const-prop-1-bit: devirtualized a call to vf1i1
19 ; CHECK: remark: <unknown>:0:0: virtual-const-prop: devirtualized a call to vf1i32
20 ; CHECK: remark: <unknown>:0:0: devirtualized vf0i1
21 ; CHECK: remark: <unknown>:0:0: devirtualized vf1i1
22 ; CHECK: remark: <unknown>:0:0: devirtualized vf1i32
23 ; CHECK: remark: <unknown>:0:0: devirtualized vf2i32
24 ; CHECK: remark: <unknown>:0:0: devirtualized vf3i32
25 ; CHECK: remark: <unknown>:0:0: devirtualized vf4i32
26 ; CHECK-NOT: devirtualized
28 ; SKIP: remark: <unknown>:0:0: virtual-const-prop: devirtualized a call to vf1i32
29 ; SKIP: remark: <unknown>:0:0: devirtualized vf1i32
30 ; SKIP: remark: <unknown>:0:0: devirtualized vf2i32
31 ; SKIP: remark: <unknown>:0:0: devirtualized vf3i32
32 ; SKIP: remark: <unknown>:0:0: devirtualized vf4i32
33 ; SKIP-NOT: devirtualized
35 ; SKIP-ALL-NOT: devirtualized
37 ; CHECK: [[VT1DATA:@[^ ]*]] = private constant { [8 x i8], [3 x ptr], [0 x i8] } { [8 x i8] c"\00\00\00\01\00\00\00\02", [3 x ptr] [ptr @vf0i1, ptr @vf1i1, ptr @vf1i32], [0 x i8] zeroinitializer }, section "vt1sec", !type [[T8:![0-9]+]]
38 @vt1 = constant [3 x ptr] [
42 ], section "vt1sec", !type !0
44 ; CHECK: [[VT2DATA:@[^ ]*]] = private constant { [8 x i8], [3 x ptr], [0 x i8] } { [8 x i8] c"\00\00\00\02\00\00\00\01", [3 x ptr] [ptr @vf1i1, ptr @vf0i1, ptr @vf2i32], [0 x i8] zeroinitializer }, !type [[T8]]
45 @vt2 = constant [3 x ptr] [
51 ; CHECK: [[VT3DATA:@[^ ]*]] = private constant { [8 x i8], [3 x ptr], [0 x i8] } { [8 x i8] c"\00\00\00\03\00\00\00\02", [3 x ptr] [ptr @vf0i1, ptr @vf1i1, ptr @vf3i32], [0 x i8] zeroinitializer }, !type [[T8]]
52 @vt3 = constant [3 x ptr] [
58 ; CHECK: [[VT4DATA:@[^ ]*]] = private constant { [8 x i8], [3 x ptr], [0 x i8] } { [8 x i8] c"\00\00\00\04\00\00\00\01", [3 x ptr] [ptr @vf1i1, ptr @vf0i1, ptr @vf4i32], [0 x i8] zeroinitializer }, !type [[T8]]
59 @vt4 = constant [3 x ptr] [
65 ; CHECK: @vt5 = {{.*}}, !type [[T0:![0-9]+]]
66 @vt5 = constant [3 x ptr] [
67 ptr @__cxa_pure_virtual,
68 ptr @__cxa_pure_virtual,
69 ptr @__cxa_pure_virtual
72 ; CHECK: @vt1 = alias [3 x ptr], getelementptr inbounds ({ [8 x i8], [3 x ptr], [0 x i8] }, ptr [[VT1DATA]], i32 0, i32 1)
73 ; CHECK: @vt2 = alias [3 x ptr], getelementptr inbounds ({ [8 x i8], [3 x ptr], [0 x i8] }, ptr [[VT2DATA]], i32 0, i32 1)
74 ; CHECK: @vt3 = alias [3 x ptr], getelementptr inbounds ({ [8 x i8], [3 x ptr], [0 x i8] }, ptr [[VT3DATA]], i32 0, i32 1)
75 ; CHECK: @vt4 = alias [3 x ptr], getelementptr inbounds ({ [8 x i8], [3 x ptr], [0 x i8] }, ptr [[VT4DATA]], i32 0, i32 1)
77 define i1 @vf0i1(ptr %this) readnone {
81 define i1 @vf1i1(ptr %this) readnone {
85 define i32 @vf1i32(ptr %this) readnone {
89 define i32 @vf2i32(ptr %this) readnone {
93 define i32 @vf3i32(ptr %this) readnone {
97 define i32 @vf4i32(ptr %this) readnone {
101 ; CHECK: define i1 @call1(
102 define i1 @call1(ptr %obj) {
103 %vtable = load ptr, ptr %obj
104 %pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtable, i32 0, metadata !"typeid")
105 %fptr = extractvalue {ptr, i1} %pair, 0
106 ; CHECK: [[VTGEP1:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -1
107 ; CHECK: [[VTLOAD1:%[^ ]*]] = load i8, ptr [[VTGEP1]]
108 ; CHECK: [[VTAND1:%[^ ]*]] = and i8 [[VTLOAD1]], 1
109 ; CHECK: [[VTCMP1:%[^ ]*]] = icmp ne i8 [[VTAND1]], 0
110 %result = call i1 %fptr(ptr %obj)
111 ; CHECK: [[AND1:%[^ ]*]] = and i1 [[VTCMP1]], true
112 %p = extractvalue {ptr, i1} %pair, 1
113 %and = and i1 %result, %p
114 ; CHECK: ret i1 [[AND1]]
118 ; CHECK: define i1 @call2(
119 define i1 @call2(ptr %obj) {
120 %vtable = load ptr, ptr %obj
121 %pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtable, i32 8, metadata !"typeid")
122 %fptr = extractvalue {ptr, i1} %pair, 0
123 ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -1
124 ; CHECK: [[VTLOAD2:%[^ ]*]] = load i8, ptr [[VTGEP2]]
125 ; CHECK: [[VTAND2:%[^ ]*]] = and i8 [[VTLOAD2]], 2
126 ; CHECK: [[VTCMP2:%[^ ]*]] = icmp ne i8 [[VTAND2]], 0
127 %result = call i1 %fptr(ptr %obj)
128 ; CHECK: [[AND2:%[^ ]*]] = and i1 [[VTCMP2]], true
129 %p = extractvalue {ptr, i1} %pair, 1
130 %and = and i1 %result, %p
131 ; CHECK: ret i1 [[AND2]]
135 ; CHECK: define i32 @call3(
136 define i32 @call3(ptr %obj) {
137 %vtable = load ptr, ptr %obj
138 %pair = call {ptr, i1} @llvm.type.checked.load(ptr %vtable, i32 16, metadata !"typeid")
139 %fptr = extractvalue {ptr, i1} %pair, 0
140 ; CHECK: [[VTGEP3:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 -5
141 ; CHECK: [[VTLOAD3:%[^ ]*]] = load i32, ptr [[VTGEP3]]
142 %result = call i32 %fptr(ptr %obj)
143 ; CHECK: ret i32 [[VTLOAD3]]
147 declare {ptr, i1} @llvm.type.checked.load(ptr, i32, metadata)
148 declare void @llvm.assume(i1)
149 declare void @__cxa_pure_virtual()
151 ; CHECK: [[T8]] = !{i32 8, !"typeid"}
152 ; CHECK: [[T0]] = !{i32 0, !"typeid"}
154 !0 = !{i32 0, !"typeid"}
156 ; CHECK: 6 wholeprogramdevirt - Number of whole program devirtualization targets
157 ; CHECK: 1 wholeprogramdevirt - Number of virtual constant propagations
158 ; CHECK: 2 wholeprogramdevirt - Number of 1 bit virtual constant propagations