devirt_promote.ll
1.21 KB
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-grtev4-linux-gnu"
%struct.A = type { i32 (...)** }
%struct.B = type { %struct.A }
@_ZTV1B = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !1
define i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) #0 {
ret i32 0;
}
define internal i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) #0 {
ret i32 0;
}
define i32 @test2(%struct.B* %obj, i32 %a) {
entry:
%0 = bitcast %struct.B* %obj to i8***
%vtable2 = load i8**, i8*** %0
%1 = bitcast i8** %vtable2 to i8*
%p2 = call i1 @llvm.type.test(i8* %1, metadata !"_ZTS1B")
call void @llvm.assume(i1 %p2)
%fptrptr = getelementptr i8*, i8** %vtable2, i32 1
%2 = bitcast i8** %fptrptr to i32 (%struct.B*, i32)**
%fptr33 = load i32 (%struct.B*, i32)*, i32 (%struct.B*, i32)** %2, align 8
%call4 = tail call i32 %fptr33(%struct.B* nonnull %obj, i32 %a)
ret i32 %call4
}
attributes #0 = { noinline optnone }
declare i1 @llvm.type.test(i8*, metadata)
declare void @llvm.assume(i1)
!0 = !{i64 16, !"_ZTS1A"}
!1 = !{i64 16, !"_ZTS1B"}