llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-end.ll

; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility %s | FileCheck %s

target datalayout = "e-p:64:64"

; CHECK: [[VT1DATA:@[^ ]*]] = private constant { [0 x i8], [4 x ptr], [8 x i8] } { [0 x i8] zeroinitializer, [4 x ptr] [ptr null, ptr @vf0i1, ptr @vf1i1, ptr @vf1i32], [8 x i8] c"\02\00\00\00\03\00\00\00" }, !type [[T8:![0-9]+]]
@vt1 = constant [4 x ptr] [
ptr null,
ptr @vf0i1,
ptr @vf1i1,
ptr @vf1i32
], !type !1

; CHECK: [[VT2DATA:@[^ ]*]] = private constant { [0 x i8], [3 x ptr], [8 x i8] } { [0 x i8] zeroinitializer, [3 x ptr] [ptr @vf1i1, ptr @vf0i1, ptr @vf2i32], [8 x i8] c"\01\00\00\00\04\00\00\00" }, !type [[T0:![0-9]+]]
@vt2 = constant [3 x ptr] [
ptr @vf1i1,
ptr @vf0i1,
ptr @vf2i32
], !type !0

; CHECK: [[VT3DATA:@[^ ]*]] = private constant { [0 x i8], [4 x ptr], [8 x i8] } { [0 x i8] zeroinitializer, [4 x ptr] [ptr null, ptr @vf0i1, ptr @vf1i1, ptr @vf3i32], [8 x i8] c"\02\00\00\00\05\00\00\00" }, !type [[T8]]
@vt3 = constant [4 x ptr] [
ptr null,
ptr @vf0i1,
ptr @vf1i1,
ptr @vf3i32
], !type !1

; CHECK: [[VT4DATA:@[^ ]*]] = private constant { [0 x i8], [3 x ptr], [8 x i8] } { [0 x i8] zeroinitializer, [3 x ptr] [ptr @vf1i1, ptr @vf0i1, ptr @vf4i32], [8 x i8] c"\01\00\00\00\06\00\00\00" }, !type [[T0]]
@vt4 = constant [3 x ptr] [
ptr @vf1i1,
ptr @vf0i1,
ptr @vf4i32
], !type !0

;; Test relative vtables
; CHECK:      [[VT6RELDATA:@[^ ]*]] = private constant { [0 x i8], [4 x i32], [4 x i8] } { [0 x i8] zeroinitializer, [4 x i32] [
; CHECK-SAME:     i32 0,
; CHECK-SAME:     i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf1i1 to i64), i64 ptrtoint (ptr @vt5_rel to i64)) to i32),
; CHECK-SAME:     i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf0i1 to i64), i64 ptrtoint (ptr @vt5_rel to i64)) to i32),
; CHECK-SAME:     i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf2i32 to i64), i64 ptrtoint (ptr @vt5_rel to i64)) to i32)
; CHECK-SAME: ], [4 x i8] c"\04\00\00\00" }, !type [[TREL:![0-9]+]]
@vt5_rel = constant [4 x i32] [
i32 zeroinitializer,
i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf1i1 to i64), i64 ptrtoint (ptr @vt5_rel to i64)) to i32),
i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf0i1 to i64), i64 ptrtoint (ptr @vt5_rel to i64)) to i32),
i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf2i32 to i64), i64 ptrtoint (ptr @vt5_rel to i64)) to i32)
], !type !3

; CHECK:      [[VT7RELDATA:@[^ ]*]] = private constant { [0 x i8], [3 x i32], [4 x i8] } { [0 x i8] zeroinitializer, [3 x i32] [
; CHECK-SAME:     i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf0i1 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32),
; CHECK-SAME:     i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf1i1 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32),
; CHECK-SAME:     i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf4i32 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32)
; CHECK-SAME: ], [4 x i8] c"\06\00\00\00" }, !type [[TREL2:![0-9]+]]
@vt6_rel = constant [3 x i32] [
i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf0i1 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32),
i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf1i1 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32),
i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @vf4i32 to i64), i64 ptrtoint (ptr @vt6_rel to i64)) to i32)
], !type !2

; CHECK: @vt1 = alias [4 x ptr], getelementptr inbounds ({ [0 x i8], [4 x ptr], [8 x i8] }, ptr [[VT1DATA]], i32 0, i32 1)
; CHECK: @vt2 = alias [3 x ptr], getelementptr inbounds ({ [0 x i8], [3 x ptr], [8 x i8] }, ptr [[VT2DATA]], i32 0, i32 1)
; CHECK: @vt3 = alias [4 x ptr], getelementptr inbounds ({ [0 x i8], [4 x ptr], [8 x i8] }, ptr [[VT3DATA]], i32 0, i32 1)
; CHECK: @vt4 = alias [3 x ptr], getelementptr inbounds ({ [0 x i8], [3 x ptr], [8 x i8] }, ptr [[VT4DATA]], i32 0, i32 1)

define i1 @vf0i1(ptr %this) readnone {
  ret i1 0
}

define i1 @vf1i1(ptr %this) readnone {
  ret i1 1
}

define i32 @vf1i32(ptr %this) readnone {
  ret i32 3
}

define i32 @vf2i32(ptr %this) readnone {
  ret i32 4
}

define i32 @vf3i32(ptr %this) readnone {
  ret i32 5
}

define i32 @vf4i32(ptr %this) readnone {
  ret i32 6
}

; CHECK: define i1 @call1(
define i1 @call1(ptr %obj) {
  %vtable = load ptr, ptr %obj
  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
  call void @llvm.assume(i1 %p)
  %fptr = load ptr, ptr %vtable
  ; CHECK: [[VTGEP1:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 24
  ; CHECK: [[VTLOAD1:%[^ ]*]] = load i8, ptr [[VTGEP1]]
  ; CHECK: [[VTAND1:%[^ ]*]] = and i8 [[VTLOAD1]], 1
  ; CHECK: [[VTCMP1:%[^ ]*]] = icmp ne i8 [[VTAND1]], 0
  %result = call i1 %fptr(ptr %obj)
  ; CHECK: ret i1 [[VTCMP1]]
  ret i1 %result
}

; CHECK: define i1 @call2(
define i1 @call2(ptr %obj) {
  %vtable = load ptr, ptr %obj
  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
  call void @llvm.assume(i1 %p)
  %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 1
  %fptr = load ptr, ptr %fptrptr
  ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 24
  ; CHECK: [[VTLOAD2:%[^ ]*]] = load i8, ptr [[VTGEP2]]
  ; CHECK: [[VTAND2:%[^ ]*]] = and i8 [[VTLOAD2]], 2
  ; CHECK: [[VTCMP2:%[^ ]*]] = icmp ne i8 [[VTAND2]], 0
  %result = call i1 %fptr(ptr %obj)
  ; CHECK: ret i1 [[VTCMP2]]
  ret i1 %result
}

; CHECK: define i32 @call3(
define i32 @call3(ptr %obj) {
  %vtable = load ptr, ptr %obj
  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid")
  call void @llvm.assume(i1 %p)
  %fptrptr = getelementptr [3 x ptr], ptr %vtable, i32 0, i32 2
  %fptr = load ptr, ptr %fptrptr
  ; CHECK: [[VTGEP3:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 28
  ; CHECK: [[VTLOAD3:%[^ ]*]] = load i32, ptr [[VTGEP3]]
  %result = call i32 %fptr(ptr %obj)
  ; CHECK: ret i32 [[VTLOAD3]]
  ret i32 %result
}

; CHECK: define i1 @call1_rel(
define i1 @call1_rel(ptr %obj) {
  %vtable = load ptr, ptr %obj
  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2")
  call void @llvm.assume(i1 %p)
  %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 0)
  %result = call i1 %fptr(ptr %obj)
  ret i1 %result
  ; CHECK: [[RES:%.*]] = icmp eq ptr %vtable, getelementptr (i8, ptr @vt5_rel, i64 4)
  ; CHECK: ret i1 [[RES]]
}

; CHECK: define i1 @call2_rel(
define i1 @call2_rel(ptr %obj) {
  %vtable = load ptr, ptr %obj
  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2")
  call void @llvm.assume(i1 %p)
  %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 4)
  %result = call i1 %fptr(ptr %obj)
  ret i1 %result
  ; CHECK: [[RES:%[^ ]*]] = icmp eq ptr %vtable, @vt6_rel
  ; CHECK: ret i1 [[RES]]
}

; CHECK: define i32 @call3_rel(
define i32 @call3_rel(ptr %obj) {
  %vtable = load ptr, ptr %obj
  %p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2")
  call void @llvm.assume(i1 %p)
  %fptr = call ptr @llvm.load.relative.i32(ptr %vtable, i32 8)
  ; CHECK: [[VTGEP3:%[^ ]*]] = getelementptr i8, ptr %vtable, i32 12
  ; CHECK: [[VTLOAD3:%[^ ]*]] = load i32, ptr [[VTGEP3]]
  %result = call i32 %fptr(ptr %obj)
  ; CHECK: ret i32 [[VTLOAD3]]
  ret i32 %result
}

declare i1 @llvm.type.test(ptr, metadata)
declare void @llvm.assume(i1)

; CHECK: [[T8]] = !{i32 8, !"typeid"}
; CHECK: [[T0]] = !{i32 0, !"typeid"}
; CHECK: [[TREL]] = !{i32 4, !"typeid2"}
; CHECK: [[TREL2]] = !{i32 0, !"typeid2"}

!0 = !{i32 0, !"typeid"}
!1 = !{i32 8, !"typeid"}
!2 = !{i32 0, !"typeid2"}
!3 = !{i32 4, !"typeid2"}