1 ; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s 2 3 target datalayout = "e-p:64:64" 4 target triple = "x86_64-unknown-linux-gnu" 5 6 @vt1 = constant [1 x i8*] [i8* bitcast (i32 (i8*, i32)* @vf1 to i8*)], !type !0 7 @vt2 = constant [1 x i8*] [i8* bitcast (i32 (i8*, i32)* @vf2 to i8*)], !type !0 8 9 declare i32 @vf1(i8* %this, i32 %arg) readnone 10 11 define i32 @vf2(i8* %this, i32 %arg) readnone { 12 ret i32 %arg 13 } 14 15 ; CHECK: define i32 @fn 16 define i32 @fn(i8* %obj) { 17 %vtableptr = bitcast i8* %obj to [1 x i8*]** 18 %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr 19 %vtablei8 = bitcast [1 x i8*]* %vtable to i8* 20 %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid") 21 call void @llvm.assume(i1 %p) 22 %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 23 %fptr = load i8*, i8** %fptrptr 24 %fptr_casted = bitcast i8* %fptr to i32 (i8*, i32)* 25 ; CHECK: call i32 % 26 %result = call i32 %fptr_casted(i8* %obj, i32 1) 27 ret i32 %result 28 } 29 declare i1 @llvm.type.test(i8*, metadata) 30 declare void @llvm.assume(i1) 31 32 !0 = !{i32 0, !"typeid"} 33
