1; -stats requires asserts 2; REQUIRES: asserts 3 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 11; Check wildcard 12; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf?i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP 13 14target datalayout = "e-p:64:64" 15target triple = "x86_64-unknown-linux-gnu" 16 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 27 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 34 35; SKIP-ALL-NOT: devirtualized 36 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] [ 39ptr @vf0i1, 40ptr @vf1i1, 41ptr @vf1i32 42], section "vt1sec", !type !0 43 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] [ 46ptr @vf1i1, 47ptr @vf0i1, 48ptr @vf2i32 49], !type !0 50 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] [ 53ptr @vf0i1, 54ptr @vf1i1, 55ptr @vf3i32 56], !type !0 57 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] [ 60ptr @vf1i1, 61ptr @vf0i1, 62ptr @vf4i32 63], !type !0 64 65; CHECK: @vt5 = {{.*}}, !type [[T0:![0-9]+]] 66@vt5 = constant [3 x ptr] [ 67ptr @__cxa_pure_virtual, 68ptr @__cxa_pure_virtual, 69ptr @__cxa_pure_virtual 70], !type !0 71 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) 76 77define i1 @vf0i1(ptr %this) readnone { 78 ret i1 0 79} 80 81define i1 @vf1i1(ptr %this) readnone { 82 ret i1 1 83} 84 85define i32 @vf1i32(ptr %this) readnone { 86 ret i32 1 87} 88 89define i32 @vf2i32(ptr %this) readnone { 90 ret i32 2 91} 92 93define i32 @vf3i32(ptr %this) readnone { 94 ret i32 3 95} 96 97define i32 @vf4i32(ptr %this) readnone { 98 ret i32 4 99} 100 101; CHECK: define i1 @call1( 102define 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]] 115 ret i1 %and 116} 117 118; CHECK: define i1 @call2( 119define 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]] 132 ret i1 %and 133} 134 135; CHECK: define i32 @call3( 136define 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]] 144 ret i32 %result 145} 146 147declare {ptr, i1} @llvm.type.checked.load(ptr, i32, metadata) 148declare void @llvm.assume(i1) 149declare void @__cxa_pure_virtual() 150 151; CHECK: [[T8]] = !{i32 8, !"typeid"} 152; CHECK: [[T0]] = !{i32 0, !"typeid"} 153 154!0 = !{i32 0, !"typeid"} 155 156; 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 159