1; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s 2; Skipping vf0i1 is identical to setting public LTO visibility. We don't devirtualize vf0i1 and all other 3; virtual call targets. 4; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf0i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP 5; We have two set of call targets {vf0i1, vf1i1} and {vf1i32, vf2i32, vf3i32, vf4i32}. 6; The command below prevents both of them from devirtualization. 7; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf0i1,vf1i32 %s 2>&1 | FileCheck %s --check-prefix=SKIP-ALL 8; Check wildcard 9; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf?i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP 10 11target datalayout = "e-p:64:64" 12target triple = "x86_64-unknown-linux-gnu" 13 14; CHECK: remark: <unknown>:0:0: virtual-const-prop-1-bit: devirtualized a call to vf0i1 15; CHECK: remark: <unknown>:0:0: virtual-const-prop-1-bit: devirtualized a call to vf1i1 16; CHECK: remark: <unknown>:0:0: virtual-const-prop: devirtualized a call to vf1i32 17; CHECK: remark: <unknown>:0:0: devirtualized vf0i1 18; CHECK: remark: <unknown>:0:0: devirtualized vf1i1 19; CHECK: remark: <unknown>:0:0: devirtualized vf1i32 20; CHECK: remark: <unknown>:0:0: devirtualized vf2i32 21; CHECK: remark: <unknown>:0:0: devirtualized vf3i32 22; CHECK: remark: <unknown>:0:0: devirtualized vf4i32 23; CHECK-NOT: devirtualized 24 25; SKIP: remark: <unknown>:0:0: virtual-const-prop: devirtualized a call to vf1i32 26; SKIP: remark: <unknown>:0:0: devirtualized vf1i32 27; SKIP: remark: <unknown>:0:0: devirtualized vf2i32 28; SKIP: remark: <unknown>:0:0: devirtualized vf3i32 29; SKIP: remark: <unknown>:0:0: devirtualized vf4i32 30; SKIP-NOT: devirtualized 31 32; SKIP-ALL-NOT: devirtualized 33 34; CHECK: [[VT1DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\01\00\00\00\02", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i32 (i8*)* @vf1i32 to i8*)], [0 x i8] zeroinitializer }, section "vt1sec", !type [[T8:![0-9]+]] 35@vt1 = constant [3 x i8*] [ 36i8* bitcast (i1 (i8*)* @vf0i1 to i8*), 37i8* bitcast (i1 (i8*)* @vf1i1 to i8*), 38i8* bitcast (i32 (i8*)* @vf1i32 to i8*) 39], section "vt1sec", !type !0 40 41; CHECK: [[VT2DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\02\00\00\00\01", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i32 (i8*)* @vf2i32 to i8*)], [0 x i8] zeroinitializer }, !type [[T8]] 42@vt2 = constant [3 x i8*] [ 43i8* bitcast (i1 (i8*)* @vf1i1 to i8*), 44i8* bitcast (i1 (i8*)* @vf0i1 to i8*), 45i8* bitcast (i32 (i8*)* @vf2i32 to i8*) 46], !type !0 47 48; CHECK: [[VT3DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\03\00\00\00\02", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i32 (i8*)* @vf3i32 to i8*)], [0 x i8] zeroinitializer }, !type [[T8]] 49@vt3 = constant [3 x i8*] [ 50i8* bitcast (i1 (i8*)* @vf0i1 to i8*), 51i8* bitcast (i1 (i8*)* @vf1i1 to i8*), 52i8* bitcast (i32 (i8*)* @vf3i32 to i8*) 53], !type !0 54 55; CHECK: [[VT4DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\04\00\00\00\01", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i32 (i8*)* @vf4i32 to i8*)], [0 x i8] zeroinitializer }, !type [[T8]] 56@vt4 = constant [3 x i8*] [ 57i8* bitcast (i1 (i8*)* @vf1i1 to i8*), 58i8* bitcast (i1 (i8*)* @vf0i1 to i8*), 59i8* bitcast (i32 (i8*)* @vf4i32 to i8*) 60], !type !0 61 62; CHECK: @vt5 = {{.*}}, !type [[T0:![0-9]+]] 63@vt5 = constant [3 x i8*] [ 64i8* bitcast (void ()* @__cxa_pure_virtual to i8*), 65i8* bitcast (void ()* @__cxa_pure_virtual to i8*), 66i8* bitcast (void ()* @__cxa_pure_virtual to i8*) 67], !type !0 68 69; CHECK: @vt1 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT1DATA]], i32 0, i32 1) 70; CHECK: @vt2 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT2DATA]], i32 0, i32 1) 71; CHECK: @vt3 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT3DATA]], i32 0, i32 1) 72; CHECK: @vt4 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT4DATA]], i32 0, i32 1) 73 74define i1 @vf0i1(i8* %this) readnone { 75 ret i1 0 76} 77 78define i1 @vf1i1(i8* %this) readnone { 79 ret i1 1 80} 81 82define i32 @vf1i32(i8* %this) readnone { 83 ret i32 1 84} 85 86define i32 @vf2i32(i8* %this) readnone { 87 ret i32 2 88} 89 90define i32 @vf3i32(i8* %this) readnone { 91 ret i32 3 92} 93 94define i32 @vf4i32(i8* %this) readnone { 95 ret i32 4 96} 97 98; CHECK: define i1 @call1( 99define i1 @call1(i8* %obj) { 100 %vtableptr = bitcast i8* %obj to [3 x i8*]** 101 %vtable = load [3 x i8*]*, [3 x i8*]** %vtableptr 102 ; CHECK: [[VT1:%[^ ]*]] = bitcast [3 x i8*]* {{.*}} to i8* 103 %vtablei8 = bitcast [3 x i8*]* %vtable to i8* 104 %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 0, metadata !"typeid") 105 %fptr = extractvalue {i8*, i1} %pair, 0 106 %fptr_casted = bitcast i8* %fptr to i1 (i8*)* 107 ; CHECK: [[VTGEP1:%[^ ]*]] = getelementptr i8, i8* [[VT1]], i32 -1 108 ; CHECK: [[VTLOAD1:%[^ ]*]] = load i8, i8* [[VTGEP1]] 109 ; CHECK: [[VTAND1:%[^ ]*]] = and i8 [[VTLOAD1]], 1 110 ; CHECK: [[VTCMP1:%[^ ]*]] = icmp ne i8 [[VTAND1]], 0 111 %result = call i1 %fptr_casted(i8* %obj) 112 ; CHECK: [[AND1:%[^ ]*]] = and i1 [[VTCMP1]], true 113 %p = extractvalue {i8*, i1} %pair, 1 114 %and = and i1 %result, %p 115 ; CHECK: ret i1 [[AND1]] 116 ret i1 %and 117} 118 119; CHECK: define i1 @call2( 120define i1 @call2(i8* %obj) { 121 %vtableptr = bitcast i8* %obj to [3 x i8*]** 122 %vtable = load [3 x i8*]*, [3 x i8*]** %vtableptr 123 ; CHECK: [[VT2:%[^ ]*]] = bitcast [3 x i8*]* {{.*}} to i8* 124 %vtablei8 = bitcast [3 x i8*]* %vtable to i8* 125 %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 8, metadata !"typeid") 126 %fptr = extractvalue {i8*, i1} %pair, 0 127 %fptr_casted = bitcast i8* %fptr to i1 (i8*)* 128 ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, i8* [[VT2]], i32 -1 129 ; CHECK: [[VTLOAD2:%[^ ]*]] = load i8, i8* [[VTGEP2]] 130 ; CHECK: [[VTAND2:%[^ ]*]] = and i8 [[VTLOAD2]], 2 131 ; CHECK: [[VTCMP2:%[^ ]*]] = icmp ne i8 [[VTAND2]], 0 132 %result = call i1 %fptr_casted(i8* %obj) 133 ; CHECK: [[AND2:%[^ ]*]] = and i1 [[VTCMP2]], true 134 %p = extractvalue {i8*, i1} %pair, 1 135 %and = and i1 %result, %p 136 ; CHECK: ret i1 [[AND2]] 137 ret i1 %and 138} 139 140; CHECK: define i32 @call3( 141define i32 @call3(i8* %obj) { 142 %vtableptr = bitcast i8* %obj to [3 x i8*]** 143 %vtable = load [3 x i8*]*, [3 x i8*]** %vtableptr 144 ; CHECK: [[VT3:%[^ ]*]] = bitcast [3 x i8*]* {{.*}} to i8* 145 %vtablei8 = bitcast [3 x i8*]* %vtable to i8* 146 %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 16, metadata !"typeid") 147 %fptr = extractvalue {i8*, i1} %pair, 0 148 %fptr_casted = bitcast i8* %fptr to i32 (i8*)* 149 ; CHECK: [[VTGEP3:%[^ ]*]] = getelementptr i8, i8* [[VT3]], i32 -5 150 ; CHECK: [[VTBC3:%[^ ]*]] = bitcast i8* [[VTGEP3]] to i32* 151 ; CHECK: [[VTLOAD3:%[^ ]*]] = load i32, i32* [[VTBC3]] 152 %result = call i32 %fptr_casted(i8* %obj) 153 ; CHECK: ret i32 [[VTLOAD3]] 154 ret i32 %result 155} 156 157declare {i8*, i1} @llvm.type.checked.load(i8*, i32, metadata) 158declare void @llvm.assume(i1) 159declare void @__cxa_pure_virtual() 160 161; CHECK: [[T8]] = !{i32 8, !"typeid"} 162; CHECK: [[T0]] = !{i32 0, !"typeid"} 163 164!0 = !{i32 0, !"typeid"} 165