1; RUN: opt -S -passes=wholeprogramdevirt %s | FileCheck %s 2 3; Test that we correctly expand the llvm.type.checked.load.relative intrinsic in 4; cases where we cannot devirtualize. 5 6target datalayout = "e-p:64:64" 7target triple = "x86_64-unknown-linux-gnu" 8 9@vt1 = constant { [2 x i32] } { [2 x i32] [ 10 i32 trunc (i64 sub (i64 ptrtoint (ptr @vf1 to i64), i64 ptrtoint (ptr @vt1 to i64)) to i32), 11 i32 trunc (i64 sub (i64 ptrtoint (ptr @vf2 to i64), i64 ptrtoint (ptr @vt1 to i64)) to i32) 12]}, align 8, !type !0, !type !1 13 14!0 = !{i64 0, !"vfunc1.type"} 15!1 = !{i64 4, !"vfunc2.type"} 16 17 18define void @vf1(ptr %this) { 19 ret void 20} 21 22define void @vf2(ptr %this) { 23 ret void 24} 25 26; CHECK: define void @call 27; CHECK: [[TT:%.*]] = call i1 @llvm.type.test(ptr [[VT:%.*]], metadata !"vfunc1.type") 28; CHECK: br i1 [[TT]] 29 30; Relative pointer computation at the address of the i32 value to the i32 value 31; to get to the pointer value. 32 33; CHECK: [[T0:%.*]] = getelementptr i8, ptr [[VT]], i32 0 34; CHECK: [[T1:%.*]] = load i32, ptr [[T0]] 35; CHECK: [[T2:%.*]] = sext i32 [[T1]] to i64 36; CHECK: [[T3:%.*]] = ptrtoint ptr [[T0]] to i64 37; CHECK: [[T4:%.*]] = add i64 [[T3]], [[T2]] 38; CHECK: [[F:%.*]] = inttoptr i64 [[T4]] to ptr 39; CHECK: call void [[F]](ptr 40 41define void @call(ptr %obj) { 42 %vtable = load ptr, ptr %obj 43 %pair = call {ptr, i1} @llvm.type.checked.load.relative(ptr %vtable, i32 0, metadata !"vfunc1.type") 44 %p = extractvalue {ptr, i1} %pair, 1 45 br i1 %p, label %cont, label %trap 46 47cont: 48 %fptr = extractvalue {ptr, i1} %pair, 0 49 call void %fptr(ptr %obj) 50 ret void 51 52trap: 53 call void @llvm.trap() 54 unreachable 55} 56 57declare {ptr, i1} @llvm.type.checked.load.relative(ptr, i32, metadata) 58declare void @llvm.trap() 59