| Peter Collingbourne | df49d1b | 2016-02-09 22:50:34 +0000 | [diff] [blame^] | 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*)] |
| 7 | @vt2 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf0 to i8*)] |
| 8 | @vt3 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)] |
| 9 | @vt4 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)] |
| 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: [[VT1:%[^ ]*]] = bitcast [1 x i8*]* {{.*}} to i8* |
| 24 | %vtablei8 = bitcast [1 x i8*]* %vtable to i8* |
| 25 | %p = call i1 @llvm.bitset.test(i8* %vtablei8, metadata !"bitset1") |
| 26 | call void @llvm.assume(i1 %p) |
| 27 | %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 |
| 28 | %fptr = load i8*, i8** %fptrptr |
| 29 | %fptr_casted = bitcast i8* %fptr to i1 (i8*)* |
| 30 | ; CHECK: [[RES1:%[^ ]*]] = icmp eq i8* [[VT1]], bitcast ([1 x i8*]* @vt3 to i8*) |
| 31 | %result = call i1 %fptr_casted(i8* %obj) |
| 32 | ; CHECK: ret i1 [[RES1]] |
| 33 | ret i1 %result |
| 34 | } |
| 35 | |
| 36 | ; CHECK: define i1 @call2 |
| 37 | define i1 @call2(i8* %obj) { |
| 38 | %vtableptr = bitcast i8* %obj to [1 x i8*]** |
| 39 | %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr |
| 40 | ; CHECK: [[VT2:%[^ ]*]] = bitcast [1 x i8*]* {{.*}} to i8* |
| 41 | %vtablei8 = bitcast [1 x i8*]* %vtable to i8* |
| 42 | %p = call i1 @llvm.bitset.test(i8* %vtablei8, metadata !"bitset2") |
| 43 | call void @llvm.assume(i1 %p) |
| 44 | %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0 |
| 45 | %fptr = load i8*, i8** %fptrptr |
| 46 | %fptr_casted = bitcast i8* %fptr to i1 (i8*)* |
| 47 | ; CHECK: [[RES1:%[^ ]*]] = icmp ne i8* [[VT1]], bitcast ([1 x i8*]* @vt2 to i8*) |
| 48 | %result = call i1 %fptr_casted(i8* %obj) |
| 49 | ret i1 %result |
| 50 | } |
| 51 | |
| 52 | declare i1 @llvm.bitset.test(i8*, metadata) |
| 53 | declare void @llvm.assume(i1) |
| 54 | |
| 55 | !0 = !{!"bitset1", [1 x i8*]* @vt1, i32 0} |
| 56 | !1 = !{!"bitset1", [1 x i8*]* @vt2, i32 0} |
| 57 | !2 = !{!"bitset1", [1 x i8*]* @vt3, i32 0} |
| 58 | !3 = !{!"bitset2", [1 x i8*]* @vt2, i32 0} |
| 59 | !4 = !{!"bitset2", [1 x i8*]* @vt3, i32 0} |
| 60 | !5 = !{!"bitset2", [1 x i8*]* @vt4, i32 0} |
| 61 | !llvm.bitsets = !{!0, !1, !2, !3, !4, !5} |