58 lines
2.0 KiB
LLVM
58 lines
2.0 KiB
LLVM
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; RUN: opt -S -wholeprogramdevirt -whole-program-visibility %s | FileCheck %s
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target datalayout = "e-p:64:64"
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target triple = "x86_64-unknown-linux-gnu"
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@vt1 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf0 to i8*)], !type !0
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@vt2 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf0 to i8*)], !type !0, !type !1
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@vt3 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)], !type !0, !type !1
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@vt4 = constant [1 x i8*] [i8* bitcast (i1 (i8*)* @vf1 to i8*)], !type !1
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define i1 @vf0(i8* %this) readnone {
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ret i1 0
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}
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define i1 @vf1(i8* %this) readnone {
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ret i1 1
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}
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; CHECK: define i1 @call1
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define i1 @call1(i8* %obj) {
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%vtableptr = bitcast i8* %obj to [1 x i8*]**
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%vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
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%vtablei8 = bitcast [1 x i8*]* %vtable to i8*
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%p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid1")
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call void @llvm.assume(i1 %p)
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%fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
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%fptr = load i8*, i8** %fptrptr
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%fptr_casted = bitcast i8* %fptr to i1 (i8*)*
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; CHECK: [[RES1:%[^ ]*]] = icmp eq [1 x i8*]* %vtable, @vt3
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%result = call i1 %fptr_casted(i8* %obj)
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; CHECK: ret i1 [[RES1]]
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ret i1 %result
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}
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; CHECK: define i32 @call2
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define i32 @call2(i8* %obj) {
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%vtableptr = bitcast i8* %obj to [1 x i8*]**
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%vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
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%vtablei8 = bitcast [1 x i8*]* %vtable to i8*
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%p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid2")
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call void @llvm.assume(i1 %p)
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%fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
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%fptr = load i8*, i8** %fptrptr
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; Intentional type mismatch to test zero extend.
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%fptr_casted = bitcast i8* %fptr to i32 (i8*)*
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; CHECK: [[RES2:%[^ ]*]] = icmp ne [1 x i8*]* %vtable, @vt2
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%result = call i32 %fptr_casted(i8* %obj)
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; CHECK: [[ZEXT2:%[^ ]*]] = zext i1 [[RES2]] to i32
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; CHECK: ret i32 [[ZEXT2:%[^ ]*]]
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ret i32 %result
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}
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declare i1 @llvm.type.test(i8*, metadata)
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declare void @llvm.assume(i1)
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!0 = !{i32 0, !"typeid1"}
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!1 = !{i32 0, !"typeid2"}
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