1 ; RUN: opt -S -wholeprogramdevirt -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s 2 3 target datalayout = "e-p:64:64" 4 target triple = "x86_64-unknown-linux-gnu" 5 6 ; CHECK: remark: <unknown>:0:0: single-impl: devirtualized a call to vf 7 ; CHECK: remark: <unknown>:0:0: devirtualized vf 8 ; CHECK-NOT: devirtualized 9 10 @vt1 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0 11 @vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0 12 13 define void @vf(i8* %this) { 14 ret void 15 } 16 17 ; CHECK: define void @call 18 define void @call(i8* %obj) { 19 %vtableptr = bitcast i8* %obj to [1 x i8*]** 20 %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr 21 %vtablei8 = bitcast [1 x i8*]* %vtable to i8* 22 %pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 0, metadata !"typeid") 23 %fptr = extractvalue {i8*, i1} %pair, 0 24 %p = extractvalue {i8*, i1} %pair, 1 25 ; CHECK: br i1 true, 26 br i1 %p, label %cont, label %trap 27 28 cont: 29 %fptr_casted = bitcast i8* %fptr to void (i8*)* 30 ; CHECK: call void @vf( 31 call void %fptr_casted(i8* %obj) 32 ret void 33 34 trap: 35 call void @llvm.trap() 36 unreachable 37 } 38 39 declare {i8*, i1} @llvm.type.checked.load(i8*, i32, metadata) 40 declare void @llvm.trap() 41 42 !0 = !{i32 0, !"typeid"} 43
