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 (i1 (i8*)* @vf0 to i8*)], !type !0 7 @vt2 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf0 to i8*)], !type !0, !type !1 8 @vt3 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)], !type !0, !type !1 9 @vt4 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)], !type !1 10 11 define i1 @vf0(i8* %this) readnone { 12 ret i1 0 13 } 14 15 define i1 @vf1(i8* %this) readnone { 16 ret i1 1 17 } 18 19 ; CHECK: define i1 @call1 20 define i1 @call1(i8* %obj) { 21 %vtableptr = bitcast i8* %obj to [1 x i8*]** 22 %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr 23 ; CHECK: {{.*}} = bitcast [1 x i8*]* {{.*}} to i8* 24 ; CHECK: [[VT1:%[^ ]*]] = bitcast [1 x i8*]* {{.*}} to i8* 25 %vtablei8 = bitcast [1 x i8*]* %vtable to i8* 26 %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid1") 27 call void @llvm.assume(i1 %p) 28 %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 29 %fptr = load i8*, i8** %fptrptr 30 %fptr_casted = bitcast i8* %fptr to i1 (i8*)* 31 ; CHECK: [[RES1:%[^ ]*]] = icmp eq i8* [[VT1]], bitcast ([1 x i8*]* @vt3 to i8*) 32 %result = call i1 %fptr_casted(i8* %obj) 33 ; CHECK: ret i1 [[RES1]] 34 ret i1 %result 35 } 36 37 ; CHECK: define i32 @call2 38 define i32 @call2(i8* %obj) { 39 %vtableptr = bitcast i8* %obj to [1 x i8*]** 40 %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr 41 ; CHECK: [[VT2:%[^ ]*]] = bitcast [1 x i8*]* {{.*}} to i8* 42 %vtablei8 = bitcast [1 x i8*]* %vtable to i8* 43 %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid2") 44 call void @llvm.assume(i1 %p) 45 %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 46 %fptr = load i8*, i8** %fptrptr 47 ; Intentional type mismatch to test zero extend. 48 %fptr_casted = bitcast i8* %fptr to i32 (i8*)* 49 ; CHECK: [[RES2:%[^ ]*]] = icmp ne i8* [[VT1]], bitcast ([1 x i8*]* @vt2 to i8*) 50 %result = call i32 %fptr_casted(i8* %obj) 51 ; CHECK: [[ZEXT2:%[^ ]*]] = zext i1 [[RES2]] to i32 52 ; CHECK: ret i32 [[ZEXT2:%[^ ]*]] 53 ret i32 %result 54 } 55 56 declare i1 @llvm.type.test(i8*, metadata) 57 declare void @llvm.assume(i1) 58 59 !0 = !{i32 0, !"typeid1"} 60 !1 = !{i32 0, !"typeid2"} 61
