; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s

target datalayout = "e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64"

%intstruct = type { i32 }
%pair = type { i32, i32 }
%struct.B = type { double }
%struct.A = type { %struct.B, i32, i32 }
%struct.C = type { [7 x i8] }


@Global = external global [10 x i8]
@Global_as1 = external addrspace(1) global [10 x i8]

; Test noop elimination
define i32* @test1(i32* %I) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    ret i32* [[I:%.*]]
;
  %A = getelementptr i32, i32* %I, i64 0
  ret i32* %A
}

define i32 addrspace(1)* @test1_as1(i32 addrspace(1)* %I) {
; CHECK-LABEL: @test1_as1(
; CHECK-NEXT:    ret i32 addrspace(1)* [[I:%.*]]
;
  %A = getelementptr i32, i32 addrspace(1)* %I, i64 0
  ret i32 addrspace(1)* %A
}

; Test noop elimination
define i32* @test2(i32* %I) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    ret i32* [[I:%.*]]
;
  %A = getelementptr i32, i32* %I
  ret i32* %A
}

; Test that two array indexing geps fold
define i32* @test3(i32* %I) {
; CHECK-LABEL: @test3(
; CHECK-NEXT:    [[B:%.*]] = getelementptr i32, i32* [[I:%.*]], i64 21
; CHECK-NEXT:    ret i32* [[B]]
;
  %A = getelementptr i32, i32* %I, i64 17
  %B = getelementptr i32, i32* %A, i64 4
  ret i32* %B
}

; Test that two getelementptr insts fold
define i32* @test4({ i32 }* %I) {
; CHECK-LABEL: @test4(
; CHECK-NEXT:    [[B:%.*]] = getelementptr { i32 }, { i32 }* [[I:%.*]], i64 1, i32 0
; CHECK-NEXT:    ret i32* [[B]]
;
  %A = getelementptr { i32 }, { i32 }* %I, i64 1
  %B = getelementptr { i32 }, { i32 }* %A, i64 0, i32 0
  ret i32* %B
}

define void @test5(i8 %B) {
        ; This should be turned into a constexpr instead of being an instruction
; CHECK-LABEL: @test5(
; CHECK-NEXT:    store i8 [[B:%.*]], i8* getelementptr inbounds ([10 x i8], [10 x i8]* @Global, i64 0, i64 4), align 1
; CHECK-NEXT:    ret void
;
  %A = getelementptr [10 x i8], [10 x i8]* @Global, i64 0, i64 4
  store i8 %B, i8* %A
  ret void
}

define void @test5_as1(i8 %B) {
        ; This should be turned into a constexpr instead of being an instruction
; CHECK-LABEL: @test5_as1(
; CHECK-NEXT:    store i8 [[B:%.*]], i8 addrspace(1)* getelementptr inbounds ([10 x i8], [10 x i8] addrspace(1)* @Global_as1, i16 0, i16 4), align 1
; CHECK-NEXT:    ret void
;
  %A = getelementptr [10 x i8], [10 x i8] addrspace(1)* @Global_as1, i16 0, i16 4
  store i8 %B, i8 addrspace(1)* %A
  ret void
}

%as1_ptr_struct = type { i32 addrspace(1)* }
%as2_ptr_struct = type { i32 addrspace(2)* }

@global_as2 = addrspace(2) global i32 zeroinitializer
@global_as1_as2_ptr = addrspace(1) global %as2_ptr_struct { i32 addrspace(2)* @global_as2 }

; This should be turned into a constexpr instead of being an instruction
define void @test_evaluate_gep_nested_as_ptrs(i32 addrspace(2)* %B) {
; CHECK-LABEL: @test_evaluate_gep_nested_as_ptrs(
; CHECK-NEXT:    store i32 addrspace(2)* [[B:%.*]], i32 addrspace(2)* addrspace(1)* getelementptr inbounds ([[AS2_PTR_STRUCT:%.*]], [[AS2_PTR_STRUCT]] addrspace(1)* @global_as1_as2_ptr, i16 0, i32 0), align 8
; CHECK-NEXT:    ret void
;
  %A = getelementptr %as2_ptr_struct, %as2_ptr_struct addrspace(1)* @global_as1_as2_ptr, i16 0, i32 0
  store i32 addrspace(2)* %B, i32 addrspace(2)* addrspace(1)* %A
  ret void
}

@arst = addrspace(1) global [4 x i8 addrspace(2)*] zeroinitializer

define void @test_evaluate_gep_as_ptrs_array(i8 addrspace(2)* %B) {
; CHECK-LABEL: @test_evaluate_gep_as_ptrs_array(
; CHECK-NEXT:    store i8 addrspace(2)* [[B:%.*]], i8 addrspace(2)* addrspace(1)* getelementptr inbounds ([4 x i8 addrspace(2)*], [4 x i8 addrspace(2)*] addrspace(1)* @arst, i16 0, i16 2), align 4
; CHECK-NEXT:    ret void
;

  %A = getelementptr [4 x i8 addrspace(2)*], [4 x i8 addrspace(2)*] addrspace(1)* @arst, i16 0, i16 2
  store i8 addrspace(2)* %B, i8 addrspace(2)* addrspace(1)* %A
  ret void
}

define i32* @test7(i32* %I, i64 %C, i64 %D) {
; CHECK-LABEL: @test7(
; CHECK-NEXT:    [[A:%.*]] = getelementptr i32, i32* [[I:%.*]], i64 [[C:%.*]]
; CHECK-NEXT:    [[B:%.*]] = getelementptr i32, i32* [[A]], i64 [[D:%.*]]
; CHECK-NEXT:    ret i32* [[B]]
;
  %A = getelementptr i32, i32* %I, i64 %C
  %B = getelementptr i32, i32* %A, i64 %D
  ret i32* %B
}

define i8* @test8([10 x i32]* %X) {
        ;; Fold into the cast.
; CHECK-LABEL: @test8(
; CHECK-NEXT:    [[B:%.*]] = bitcast [10 x i32]* [[X:%.*]] to i8*
; CHECK-NEXT:    ret i8* [[B]]
;
  %A = getelementptr [10 x i32], [10 x i32]* %X, i64 0, i64 0
  %B = bitcast i32* %A to i8*
  ret i8* %B
}

define i32 @test9() {
; CHECK-LABEL: @test9(
; CHECK-NEXT:    ret i32 8
;
  %A = getelementptr { i32, double }, { i32, double }* null, i32 0, i32 1
  %B = ptrtoint double* %A to i32
  ret i32 %B
}

define i1 @test10({ i32, i32 }* %x, { i32, i32 }* %y) {
; CHECK-LABEL: @test10(
; CHECK-NEXT:    [[T4:%.*]] = icmp eq { i32, i32 }* [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret i1 [[T4]]
;
  %t1 = getelementptr { i32, i32 }, { i32, i32 }* %x, i32 0, i32 1
  %t3 = getelementptr { i32, i32 }, { i32, i32 }* %y, i32 0, i32 1
  %t4 = icmp eq i32* %t1, %t3
  ret i1 %t4
}

define i1 @test10_addrspacecast({ i32, i32 }* %x, { i32, i32 } addrspace(3)* %y) {
; CHECK-LABEL: @test10_addrspacecast(
; CHECK-NEXT:    [[T1:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[X:%.*]], i64 0, i32 1
; CHECK-NEXT:    [[T3:%.*]] = getelementptr { i32, i32 }, { i32, i32 } addrspace(3)* [[Y:%.*]], i64 0, i32 1
; CHECK-NEXT:    [[T3_C:%.*]] = addrspacecast i32 addrspace(3)* [[T3]] to i32*
; CHECK-NEXT:    [[T4:%.*]] = icmp eq i32* [[T1]], [[T3_C]]
; CHECK-NEXT:    ret i1 [[T4]]
;
  %t1 = getelementptr { i32, i32 }, { i32, i32 }* %x, i32 0, i32 1
  %t3 = getelementptr { i32, i32 }, { i32, i32 } addrspace(3)* %y, i32 0, i32 1
  %t3.c = addrspacecast i32 addrspace(3)* %t3 to i32*
  %t4 = icmp eq i32* %t1, %t3.c
  ret i1 %t4
}

define i1 @test11({ i32, i32 }* %X) {
; CHECK-LABEL: @test11(
; CHECK-NEXT:    [[Q:%.*]] = icmp eq { i32, i32 }* [[X:%.*]], null
; CHECK-NEXT:    ret i1 [[Q]]
;
  %P = getelementptr { i32, i32 }, { i32, i32 }* %X, i32 0, i32 0
  %Q = icmp eq i32* %P, null
  ret i1 %Q
}


; PR4748
define i32 @test12(%struct.A* %a) {
; CHECK-LABEL: @test12(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[G3:%.*]] = getelementptr [[STRUCT_A:%.*]], %struct.A* [[A:%.*]], i64 0, i32 1
; CHECK-NEXT:    store i32 10, i32* [[G3]], align 4
; CHECK-NEXT:    ret i32 10
;
entry:
  %g3 = getelementptr %struct.A, %struct.A* %a, i32 0, i32 1
  store i32 10, i32* %g3, align 4

  %g4 = getelementptr %struct.A, %struct.A* %a, i32 0, i32 0

  %new_a = bitcast %struct.B* %g4 to %struct.A*

  %g5 = getelementptr %struct.A, %struct.A* %new_a, i32 0, i32 1
  %a_a = load i32, i32* %g5, align 4
  ret i32 %a_a
}


; PR2235
%S = type { i32, [ 100 x i32] }
define i1 @test13(i64 %X, %S* %P) {
; CHECK-LABEL: @test13(
; CHECK-NEXT:    [[C:%.*]] = icmp eq i64 [[X:%.*]], -1
; CHECK-NEXT:    ret i1 [[C]]
;
  %A = getelementptr inbounds %S, %S* %P, i32 0, i32 1, i64 %X
  %B = getelementptr inbounds %S, %S* %P, i32 0, i32 0
  %C = icmp eq i32* %A, %B
  ret i1 %C
}

define <2 x i1> @test13_vector(<2 x i64> %X, <2 x %S*> %P) nounwind {
; CHECK-LABEL: @test13_vector(
; CHECK-NEXT:    [[C:%.*]] = icmp eq <2 x i64> [[X:%.*]], <i64 -1, i64 -1>
; CHECK-NEXT:    ret <2 x i1> [[C]]
;
  %A = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, <2 x i64> %X
  %B = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 0, i32 0>
  %C = icmp eq <2 x i32*> %A, %B
  ret <2 x i1> %C
}

define <2 x i1> @test13_vector2(i64 %X, <2 x %S*> %P) nounwind {
; CHECK-LABEL: @test13_vector2(
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[X:%.*]], i64 0
; CHECK-NEXT:    [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 2, i64 0>
; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq <2 x i64> [[TMP1]], <i64 -4, i64 poison>
; CHECK-NEXT:    [[C:%.*]] = shufflevector <2 x i1> [[TMP2]], <2 x i1> poison, <2 x i32> zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[C]]
;
  %A = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, i64 %X
  %B = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 0, i32 0>
  %C = icmp eq <2 x i32*> %A, %B
  ret <2 x i1> %C
}

; This is a test of icmp + shl nuw in disguise - 4611... is 0x3fff...
define <2 x i1> @test13_vector3(i64 %X, <2 x %S*> %P) nounwind {
; CHECK-LABEL: @test13_vector3(
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[X:%.*]], i64 0
; CHECK-NEXT:    [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 2, i64 0>
; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq <2 x i64> [[TMP1]], <i64 4, i64 poison>
; CHECK-NEXT:    [[C:%.*]] = shufflevector <2 x i1> [[TMP2]], <2 x i1> poison, <2 x i32> zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[C]]
;
  %A = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, i64 %X
  %B = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 1, i32 1>, i64 1
  %C = icmp eq <2 x i32*> %A, %B
  ret <2 x i1> %C
}

define i1 @test13_as1(i16 %X, %S addrspace(1)* %P) {
; CHECK-LABEL: @test13_as1(
; CHECK-NEXT:    [[C:%.*]] = icmp eq i16 [[X:%.*]], -1
; CHECK-NEXT:    ret i1 [[C]]
;
  %A = getelementptr inbounds %S, %S addrspace(1)* %P, i16 0, i32 1, i16 %X
  %B = getelementptr inbounds %S, %S addrspace(1)* %P, i16 0, i32 0
  %C = icmp eq i32 addrspace(1)* %A, %B
  ret i1 %C
}

define <2 x i1> @test13_vector_as1(<2 x i16> %X, <2 x %S addrspace(1)*> %P) {
; CHECK-LABEL: @test13_vector_as1(
; CHECK-NEXT:    [[C:%.*]] = icmp eq <2 x i16> [[X:%.*]], <i16 -1, i16 -1>
; CHECK-NEXT:    ret <2 x i1> [[C]]
;
  %A = getelementptr inbounds %S, <2 x %S addrspace(1)*> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 1, i32 1>, <2 x i16> %X
  %B = getelementptr inbounds %S, <2 x %S addrspace(1)*> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 0, i32 0>
  %C = icmp eq <2 x i32 addrspace(1)*> %A, %B
  ret <2 x i1> %C
}

define i1 @test13_i32(i32 %X, %S* %P) {
; CHECK-LABEL: @test13_i32(
; CHECK-NEXT:    [[C:%.*]] = icmp eq i32 [[X:%.*]], -1
; CHECK-NEXT:    ret i1 [[C]]
;
  %A = getelementptr inbounds %S, %S* %P, i32 0, i32 1, i32 %X
  %B = getelementptr inbounds %S, %S* %P, i32 0, i32 0
  %C = icmp eq i32* %A, %B
  ret i1 %C
}

define i1 @test13_i16(i16 %X, %S* %P) {
; CHECK-LABEL: @test13_i16(
; CHECK-NEXT:    [[C:%.*]] = icmp eq i16 [[X:%.*]], -1
; CHECK-NEXT:    ret i1 [[C]]
;
  %A = getelementptr inbounds %S, %S* %P, i16 0, i32 1, i16 %X
  %B = getelementptr inbounds %S, %S* %P, i16 0, i32 0
  %C = icmp eq i32* %A, %B
  ret i1 %C
}

define i1 @test13_i128(i128 %X, %S* %P) {
; CHECK-LABEL: @test13_i128(
; CHECK-NEXT:    [[TMP1:%.*]] = trunc i128 [[X:%.*]] to i64
; CHECK-NEXT:    [[C:%.*]] = icmp eq i64 [[TMP1]], -1
; CHECK-NEXT:    ret i1 [[C]]
;
  %A = getelementptr inbounds %S, %S* %P, i128 0, i32 1, i128 %X
  %B = getelementptr inbounds %S, %S* %P, i128 0, i32 0
  %C = icmp eq i32* %A, %B
  ret i1 %C
}


@G = external global [3 x i8]
define i8* @test14(i32 %idx) {
; CHECK-LABEL: @test14(
; CHECK-NEXT:    [[ZEXT:%.*]] = zext i32 [[IDX:%.*]] to i64
; CHECK-NEXT:    [[T:%.*]] = getelementptr [3 x i8], [3 x i8]* @G, i64 0, i64 [[ZEXT]]
; CHECK-NEXT:    ret i8* [[T]]
;
  %zext = zext i32 %idx to i64
  %t = getelementptr i8, i8* getelementptr ([3 x i8], [3 x i8]* @G, i32 0, i32 0), i64 %zext
  ret i8* %t
}


; Test folding of constantexpr geps into normal geps.
@Array = external global [40 x i32]
define i32 *@test15(i64 %X) {
; CHECK-LABEL: @test15(
; CHECK-NEXT:    [[A:%.*]] = getelementptr [40 x i32], [40 x i32]* @Array, i64 0, i64 [[X:%.*]]
; CHECK-NEXT:    ret i32* [[A]]
;
  %A = getelementptr i32, i32* getelementptr ([40 x i32], [40 x i32]* @Array, i64 0, i64 0), i64 %X
  ret i32* %A
}


define i32* @test16(i32* %X, i32 %Idx) {
; CHECK-LABEL: @test16(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[IDX:%.*]] to i64
; CHECK-NEXT:    [[R:%.*]] = getelementptr i32, i32* [[X:%.*]], i64 [[TMP1]]
; CHECK-NEXT:    ret i32* [[R]]
;
  %R = getelementptr i32, i32* %X, i32 %Idx
  ret i32* %R
}


define i1 @test17(i16* %P, i32 %I, i32 %J) {
; CHECK-LABEL: @test17(
; CHECK-NEXT:    [[C:%.*]] = icmp slt i32 [[I:%.*]], [[J:%.*]]
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16* %P, i32 %I
  %Y = getelementptr inbounds i16, i16* %P, i32 %J
  %C = icmp ult i16* %X, %Y
  ret i1 %C
}

define i1 @test18(i16* %P, i32 %I) {
; CHECK-LABEL: @test18(
; CHECK-NEXT:    [[C:%.*]] = icmp slt i32 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16* %P, i32 %I
  %C = icmp ult i16* %X, %P
  ret i1 %C
}

; Larger than the pointer size for a non-zero address space
define i1 @test18_as1(i16 addrspace(1)* %P, i32 %I) {
; CHECK-LABEL: @test18_as1(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[I:%.*]], 32768
; CHECK-NEXT:    [[C:%.*]] = icmp ne i32 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16 addrspace(1)* %P, i32 %I
  %C = icmp ult i16 addrspace(1)* %X, %P
  ret i1 %C
}

; Smaller than the pointer size for a non-zero address space
define i1 @test18_as1_i32(i16 addrspace(1)* %P, i32 %I) {
; CHECK-LABEL: @test18_as1_i32(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[I:%.*]], 32768
; CHECK-NEXT:    [[C:%.*]] = icmp ne i32 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16 addrspace(1)* %P, i32 %I
  %C = icmp ult i16 addrspace(1)* %X, %P
  ret i1 %C
}

; Smaller than pointer size
define i1 @test18_i16(i16* %P, i16 %I) {
; CHECK-LABEL: @test18_i16(
; CHECK-NEXT:    [[C:%.*]] = icmp slt i16 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16* %P, i16 %I
  %C = icmp ult i16* %X, %P
  ret i1 %C
}

; Same as pointer size
define i1 @test18_i64(i16* %P, i64 %I) {
; CHECK-LABEL: @test18_i64(
; CHECK-NEXT:    [[C:%.*]] = icmp slt i64 [[I:%.*]], 0
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16* %P, i64 %I
  %C = icmp ult i16* %X, %P
  ret i1 %C
}

; Larger than the pointer size
define i1 @test18_i128(i16* %P, i128 %I) {
; CHECK-LABEL: @test18_i128(
; CHECK-NEXT:    [[TMP1:%.*]] = and i128 [[I:%.*]], 9223372036854775808
; CHECK-NEXT:    [[C:%.*]] = icmp ne i128 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[C]]
;
  %X = getelementptr inbounds i16, i16* %P, i128 %I
  %C = icmp ult i16* %X, %P
  ret i1 %C
}

define i32 @test19(i32* %P, i32 %A, i32 %B) {
; CHECK-LABEL: @test19(
; CHECK-NEXT:    [[T10:%.*]] = icmp eq i32 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[T11:%.*]] = zext i1 [[T10]] to i32
; CHECK-NEXT:    ret i32 [[T11]]
;
  %t4 = getelementptr inbounds i32, i32* %P, i32 %A
  %t9 = getelementptr inbounds i32, i32* %P, i32 %B
  %t10 = icmp eq i32* %t4, %t9
  %t11 = zext i1 %t10 to i32
  ret i32 %t11
}

define i32 @test20(i32* %P, i32 %A, i32 %B) {
; CHECK-LABEL: @test20(
; CHECK-NEXT:    [[T6:%.*]] = icmp eq i32 [[A:%.*]], 0
; CHECK-NEXT:    [[T7:%.*]] = zext i1 [[T6]] to i32
; CHECK-NEXT:    ret i32 [[T7]]
;
  %t4 = getelementptr inbounds i32, i32* %P, i32 %A
  %t6 = icmp eq i32* %t4, %P
  %t7 = zext i1 %t6 to i32
  ret i32 %t7
}

define i32 @test20_as1(i32 addrspace(1)* %P, i32 %A, i32 %B) {
; CHECK-LABEL: @test20_as1(
; CHECK-NEXT:    [[TMP1:%.*]] = trunc i32 [[A:%.*]] to i16
; CHECK-NEXT:    [[T6:%.*]] = icmp eq i16 [[TMP1]], 0
; CHECK-NEXT:    [[T7:%.*]] = zext i1 [[T6]] to i32
; CHECK-NEXT:    ret i32 [[T7]]
;
  %t4 = getelementptr inbounds i32, i32 addrspace(1)* %P, i32 %A
  %t6 = icmp eq i32 addrspace(1)* %t4, %P
  %t7 = zext i1 %t6 to i32
  ret i32 %t7
}


define i32 @test21() {
; CHECK-LABEL: @test21(
; CHECK-NEXT:    [[PBOB1:%.*]] = alloca [[INTSTRUCT:%.*]], align 8
; CHECK-NEXT:    [[PBOBEL:%.*]] = getelementptr inbounds [[INTSTRUCT]], %intstruct* [[PBOB1]], i64 0, i32 0
; CHECK-NEXT:    [[RVAL:%.*]] = load i32, i32* [[PBOBEL]], align 8
; CHECK-NEXT:    ret i32 [[RVAL]]
;
  %pbob1 = alloca %intstruct
  %pbob2 = getelementptr %intstruct, %intstruct* %pbob1
  %pbobel = getelementptr %intstruct, %intstruct* %pbob2, i64 0, i32 0
  %rval = load i32, i32* %pbobel
  ret i32 %rval
}


@A = global i32 1               ; <i32*> [#uses=1]
@B = global i32 2               ; <i32*> [#uses=1]

define i1 @test22() {
; CHECK-LABEL: @test22(
; CHECK-NEXT:    ret i1 icmp ult (i32* getelementptr inbounds (i32, i32* @A, i64 1), i32* getelementptr (i32, i32* @B, i64 2))
;
  %C = icmp ult i32* getelementptr (i32, i32* @A, i64 1),
  getelementptr (i32, i32* @B, i64 2)
  ret i1 %C
}


%X = type { [10 x i32], float }

define i1 @test23() {
; CHECK-LABEL: @test23(
; CHECK-NEXT:    ret i1 false
;
  %A = getelementptr %X, %X* null, i64 0, i32 0, i64 0                ; <i32*> [#uses=1]
  %B = icmp ne i32* %A, null              ; <i1> [#uses=1]
  ret i1 %B
}

define void @test25() {
; CHECK-LABEL: @test25(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    store i64 poison, i64* null, align 4294967296
; CHECK-NEXT:    tail call void @foo25(i32 0, i64 poison)
; CHECK-NEXT:    unreachable
;
entry:
  %t = getelementptr { i64, i64, i64, i64 }, { i64, i64, i64, i64 }* null, i32 0, i32 3
  %t.upgrd.1 = load i64, i64* %t
  %t8.ui = load i64, i64* null
  %t8 = bitcast i64 %t8.ui to i64
  %t9 = and i64 %t8, %t.upgrd.1
  %sext = trunc i64 %t9 to i32
  %t27.i = sext i32 %sext to i64
  tail call void @foo25( i32 0, i64 %t27.i )
  unreachable
}

declare void @foo25(i32, i64)


; PR1637
define i1 @test26(i8* %arr) {
; CHECK-LABEL: @test26(
; CHECK-NEXT:    ret i1 true
;
  %X = getelementptr i8, i8* %arr, i32 1
  %Y = getelementptr i8, i8* %arr, i32 1
  %test = icmp uge i8* %X, %Y
  ret i1 %test
}

  %struct.__large_struct = type { [100 x i64] }
  %struct.compat_siginfo = type { i32, i32, i32, { [29 x i32] } }
  %struct.siginfo_t = type { i32, i32, i32, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] } }
  %struct.sigval_t = type { i8* }

define i32 @test27(%struct.compat_siginfo* %to, %struct.siginfo_t* %from) {
; CHECK-LABEL: @test27(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[FROM_ADDR:%.*]] = alloca %struct.siginfo_t*, align 8
; CHECK-NEXT:    [[T344:%.*]] = load %struct.siginfo_t*, %struct.siginfo_t** [[FROM_ADDR]], align 8
; CHECK-NEXT:    [[T349:%.*]] = getelementptr [[STRUCT_SIGINFO_T:%.*]], %struct.siginfo_t* [[T344]], i64 0, i32 3, i32 0, i32 3, i32 0
; CHECK-NEXT:    [[T349350:%.*]] = bitcast i8** [[T349]] to i32*
; CHECK-NEXT:    [[T351:%.*]] = load i32, i32* [[T349350]], align 8
; CHECK-NEXT:    [[T360:%.*]] = call i32 asm sideeffect "...", "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"(i32 [[T351]], %struct.__large_struct* elementtype(%struct.__large_struct) null, i32 -14, i32 0) #[[ATTR0:[0-9]+]]
; CHECK-NEXT:    unreachable
;
entry:
  %from_addr = alloca %struct.siginfo_t*
  %t344 = load %struct.siginfo_t*, %struct.siginfo_t** %from_addr, align 8
  %t345 = getelementptr %struct.siginfo_t, %struct.siginfo_t* %t344, i32 0, i32 3
  %t346 = getelementptr { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }* %t345, i32 0, i32 0
  %t346347 = bitcast { i32, i32, [0 x i8], %struct.sigval_t, i32 }* %t346 to { i32, i32, %struct.sigval_t }*
  %t348 = getelementptr { i32, i32, %struct.sigval_t }, { i32, i32, %struct.sigval_t }* %t346347, i32 0, i32 2
  %t349 = getelementptr %struct.sigval_t, %struct.sigval_t* %t348, i32 0, i32 0
  %t349350 = bitcast i8** %t349 to i32*
  %t351 = load i32, i32* %t349350, align 8
  %t360 = call i32 asm sideeffect "...",
  "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"( i32 %t351, %struct.__large_struct* elementtype(%struct.__large_struct) null, i32 -14, i32 0 )
  unreachable
}

; PR1978
  %struct.x = type <{ i8 }>
@.str = internal constant [6 x i8] c"Main!\00"
@.str1 = internal constant [12 x i8] c"destroy %p\0A\00"

define i32 @test28() nounwind  {
; CHECK-LABEL: @test28(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[ORIENTATIONS:%.*]] = alloca [1 x [1 x %struct.x]], align 8
; CHECK-NEXT:    [[T3:%.*]] = call i32 @puts(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0)) #[[ATTR0]]
; CHECK-NEXT:    br label [[BB10:%.*]]
; CHECK:       bb10:
; CHECK-NEXT:    [[INDVAR:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INDVAR_NEXT:%.*]], [[BB10]] ]
; CHECK-NEXT:    [[T12_REC:%.*]] = xor i32 [[INDVAR]], -1
; CHECK-NEXT:    [[TMP0:%.*]] = sext i32 [[T12_REC]] to i64
; CHECK-NEXT:    [[T12:%.*]] = getelementptr inbounds [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* [[ORIENTATIONS]], i64 1, i64 0, i64 [[TMP0]]
; CHECK-NEXT:    [[T16:%.*]] = call i32 (i8*, ...) @printf(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str1, i64 0, i64 0), %struct.x* nonnull [[T12]]) #[[ATTR0]]
; CHECK-NEXT:    [[T84:%.*]] = icmp eq i32 [[INDVAR]], 0
; CHECK-NEXT:    [[INDVAR_NEXT]] = add i32 [[INDVAR]], 1
; CHECK-NEXT:    br i1 [[T84]], label [[BB17:%.*]], label [[BB10]]
; CHECK:       bb17:
; CHECK-NEXT:    ret i32 0
;
entry:
  %orientations = alloca [1 x [1 x %struct.x]]
  %t3 = call i32 @puts( i8* getelementptr ([6 x i8], [6 x i8]* @.str, i32 0, i32 0) ) nounwind
  %t45 = getelementptr inbounds [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* %orientations, i32 1, i32 0, i32 0
  %orientations62 = getelementptr [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* %orientations, i32 0, i32 0, i32 0
  br label %bb10

bb10:
  %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb10 ]
  %t.0.reg2mem.0.rec = mul i32 %indvar, -1
  %t12.rec = add i32 %t.0.reg2mem.0.rec, -1
  %t12 = getelementptr inbounds %struct.x, %struct.x* %t45, i32 %t12.rec
  %t16 = call i32 (i8*, ...) @printf( i8* nonnull dereferenceable(1) getelementptr ([12 x i8], [12 x i8]* @.str1, i32 0, i32 0), %struct.x* %t12 ) nounwind
  %t84 = icmp eq %struct.x* %t12, %orientations62
  %indvar.next = add i32 %indvar, 1
  br i1 %t84, label %bb17, label %bb10

bb17:
  ret i32 0
}

declare i32 @puts(i8*)

declare i32 @printf(i8*, ...)


; rdar://6762290
  %T = type <{ i64, i64, i64 }>
define i32 @test29(i8* %start, i32 %X) nounwind {
; CHECK-LABEL: @test29(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    store i64 poison, i64* null, align 4294967296
; CHECK-NEXT:    br i1 poison, label [[IF_THEN216:%.*]], label [[IF_END363:%.*]]
; CHECK:       if.then216:
; CHECK-NEXT:    ret i32 1
; CHECK:       if.end363:
; CHECK-NEXT:    ret i32 0
;
entry:
  %t3 = load i64, i64* null
  %add.ptr = getelementptr i8, i8* %start, i64 %t3
  %t158 = load i32, i32* null
  %add.ptr159 = getelementptr %T, %T* null, i32 %t158
  %add.ptr209 = getelementptr i8, i8* %start, i64 0
  %add.ptr212 = getelementptr i8, i8* %add.ptr209, i32 %X
  %cmp214 = icmp ugt i8* %add.ptr212, %add.ptr
  br i1 %cmp214, label %if.then216, label %if.end363

if.then216:
  ret i32 1

if.end363:
  ret i32 0
}


; PR3694
define i32 @test30(i32 %m, i32 %n) nounwind {
; CHECK-LABEL: @test30(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TMP0:%.*]] = zext i32 [[N:%.*]] to i64
; CHECK-NEXT:    [[TMP1:%.*]] = alloca i32, i64 [[TMP0]], align 4
; CHECK-NEXT:    call void @test30f(i32* nonnull [[TMP1]]) #[[ATTR0]]
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[M:%.*]] to i64
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i32, i32* [[TMP1]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, i32* [[TMP3]], align 4
; CHECK-NEXT:    ret i32 [[TMP4]]
;
entry:
  %0 = alloca i32, i32 %n, align 4
  %1 = bitcast i32* %0 to [0 x i32]*
  call void @test30f(i32* %0) nounwind
  %2 = getelementptr [0 x i32], [0 x i32]* %1, i32 0, i32 %m
  %3 = load i32, i32* %2, align 4
  ret i32 %3
}

declare void @test30f(i32*)


define i1 @test31(i32* %A) {
; CHECK-LABEL: @test31(
; CHECK-NEXT:    ret i1 true
;
  %B = getelementptr i32, i32* %A, i32 1
  %C = getelementptr i32, i32* %A, i64 1
  %V = icmp eq i32* %B, %C
  ret i1 %V
}


; PR1345
define i8* @test32(i8* %v) {
; CHECK-LABEL: @test32(
; CHECK-NEXT:    [[A:%.*]] = alloca [4 x i8*], align 16
; CHECK-NEXT:    [[B:%.*]] = getelementptr inbounds [4 x i8*], [4 x i8*]* [[A]], i64 0, i64 0
; CHECK-NEXT:    store i8* null, i8** [[B]], align 16
; CHECK-NEXT:    [[D:%.*]] = getelementptr inbounds [4 x i8*], [4 x i8*]* [[A]], i64 0, i64 1
; CHECK-NEXT:    store i8* [[V:%.*]], i8** [[D]], align 8
; CHECK-NEXT:    [[F:%.*]] = getelementptr inbounds [4 x i8*], [4 x i8*]* [[A]], i64 0, i64 2
; CHECK-NEXT:    [[G:%.*]] = load i8*, i8** [[F]], align 16
; CHECK-NEXT:    ret i8* [[G]]
;
  %A = alloca [4 x i8*], align 16
  %B = getelementptr [4 x i8*], [4 x i8*]* %A, i32 0, i32 0
  store i8* null, i8** %B
  %C = bitcast [4 x i8*]* %A to { [16 x i8] }*
  %D = getelementptr { [16 x i8] }, { [16 x i8] }* %C, i32 0, i32 0, i32 8
  %E = bitcast i8* %D to i8**
  store i8* %v, i8** %E
  %F = getelementptr [4 x i8*], [4 x i8*]* %A, i32 0, i32 2
  %G = load i8*, i8** %F
  ret i8* %G
}

; PR3290
%struct.Key = type { { i32, i32 } }
%struct.anon = type <{ i8, [3 x i8], i32 }>

define i32* @test33(%struct.Key* %A) {
; CHECK-LABEL: @test33(
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr [[STRUCT_KEY:%.*]], %struct.Key* [[A:%.*]], i64 0, i32 0, i32 1
; CHECK-NEXT:    ret i32* [[TMP1]]
;
  %B = bitcast %struct.Key* %A to %struct.anon*
  %C = getelementptr %struct.anon, %struct.anon* %B, i32 0, i32 2
  ret i32* %C
}

define i32 addrspace(1)* @test33_as1(%struct.Key addrspace(1)* %A) {
; CHECK-LABEL: @test33_as1(
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr [[STRUCT_KEY:%.*]], [[STRUCT_KEY]] addrspace(1)* [[A:%.*]], i16 0, i32 0, i32 1
; CHECK-NEXT:    ret i32 addrspace(1)* [[TMP1]]
;
  %B = bitcast %struct.Key addrspace(1)* %A to %struct.anon addrspace(1)*
  %C = getelementptr %struct.anon, %struct.anon addrspace(1)* %B, i32 0, i32 2
  ret i32 addrspace(1)* %C
}

define i32 addrspace(1)* @test33_array_as1([10 x i32] addrspace(1)* %A) {
; CHECK-LABEL: @test33_array_as1(
; CHECK-NEXT:    [[C:%.*]] = getelementptr [10 x i32], [10 x i32] addrspace(1)* [[A:%.*]], i16 0, i16 2
; CHECK-NEXT:    ret i32 addrspace(1)* [[C]]
;
  %B = bitcast [10 x i32] addrspace(1)* %A to [5 x i32] addrspace(1)*
  %C = getelementptr [5 x i32], [5 x i32] addrspace(1)* %B, i32 0, i32 2
  ret i32 addrspace(1)* %C
}

; Make sure the GEP indices use the right pointer sized integer
define i32 addrspace(1)* @test33_array_struct_as1([10 x %struct.Key] addrspace(1)* %A) {
; CHECK-LABEL: @test33_array_struct_as1(
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr [10 x %struct.Key], [10 x %struct.Key] addrspace(1)* [[A:%.*]], i16 0, i16 1, i32 0, i32 0
; CHECK-NEXT:    ret i32 addrspace(1)* [[TMP1]]
;
  %B = bitcast [10 x %struct.Key] addrspace(1)* %A to [20 x i32] addrspace(1)*
  %C = getelementptr [20 x i32], [20 x i32] addrspace(1)* %B, i32 0, i32 2
  ret i32 addrspace(1)* %C
}

define i32 addrspace(1)* @test33_addrspacecast(%struct.Key* %A) {
; CHECK-LABEL: @test33_addrspacecast(
; CHECK-NEXT:    [[C:%.*]] = getelementptr [[STRUCT_KEY:%.*]], %struct.Key* [[A:%.*]], i64 0, i32 0, i32 1
; CHECK-NEXT:    [[TMP1:%.*]] = addrspacecast i32* [[C]] to i32 addrspace(1)*
; CHECK-NEXT:    ret i32 addrspace(1)* [[TMP1]]
;
  %B = addrspacecast %struct.Key* %A to %struct.anon addrspace(1)*
  %C = getelementptr %struct.anon, %struct.anon addrspace(1)* %B, i32 0, i32 2
  ret i32 addrspace(1)* %C
}

  %T2 = type { i8*, i8 }
define i8* @test34(i8* %Val, i64 %V) nounwind {
; CHECK-LABEL: @test34(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[C_CAST:%.*]] = inttoptr i64 [[V:%.*]] to i8*
; CHECK-NEXT:    ret i8* [[C_CAST]]
;
entry:
  %A = alloca %T2, align 8
  %mrv_gep = bitcast %T2* %A to i64*
  %B = getelementptr %T2, %T2* %A, i64 0, i32 0

  store i64 %V, i64* %mrv_gep
  %C = load i8*, i8** %B, align 8
  ret i8* %C
}

%t0 = type { i8*, [19 x i8] }
%t1 = type { i8*, [0 x i8] }

@array = external global [11 x i8]

@s = external global %t0
@"\01LC8" = external constant [17 x i8]

; Instcombine should be able to fold this getelementptr.

define i32 @test35() nounwind {
; CHECK-LABEL: @test35(
; CHECK-NEXT:    [[TMP1:%.*]] = call i32 (i8*, ...) @printf(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @"\01LC8", i64 0, i64 0), i8* getelementptr inbounds ([[T0:%.*]], %t0* @s, i64 0, i32 1, i64 0)) #[[ATTR0]]
; CHECK-NEXT:    ret i32 0
;
  call i32 (i8*, ...) @printf(i8* getelementptr ([17 x i8], [17 x i8]* @"\01LC8", i32 0, i32 0),
  i8* getelementptr (%t1, %t1* bitcast (%t0* @s to %t1*), i32 0, i32 1, i32 0)) nounwind
  ret i32 0
}

; Don't treat signed offsets as unsigned.
define i8* @test36() nounwind {
; CHECK-LABEL: @test36(
; CHECK-NEXT:    ret i8* getelementptr ([11 x i8], [11 x i8]* @array, i64 -1, i64 10)
;
  ret i8* getelementptr ([11 x i8], [11 x i8]* @array, i32 0, i64 -1)
}

; Instcombine shouldn't assume that gep(A,0,1) != gep(A,1,0).
@A37 = external constant [1 x i8]
define i1 @test37() nounwind {
; CHECK-LABEL: @test37(
; CHECK-NEXT:    ret i1 true
;
  %t = icmp eq i8* getelementptr ([1 x i8], [1 x i8]* @A37, i64 0, i64 1),
  getelementptr ([1 x i8], [1 x i8]* @A37, i64 1, i64 0)
  ret i1 %t
}

; Test index promotion
define i32* @test38(i32* %I, i32 %n) {
; CHECK-LABEL: @test38(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[N:%.*]] to i64
; CHECK-NEXT:    [[A:%.*]] = getelementptr i32, i32* [[I:%.*]], i64 [[TMP1]]
; CHECK-NEXT:    ret i32* [[A]]
;
  %A = getelementptr i32, i32* %I, i32 %n
  ret i32* %A
}

; Test that we don't duplicate work when the second gep is a "bitcast".
%pr10322_t = type { i8* }
declare void @pr10322_f2(%pr10322_t*)
declare void @pr10322_f3(i8**)
define void @pr10322_f1(%pr10322_t* %foo) {
; CHECK-LABEL: @pr10322_f1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[ARRAYIDX8:%.*]] = getelementptr inbounds [[PR10322_T:%.*]], %pr10322_t* [[FOO:%.*]], i64 2
; CHECK-NEXT:    call void @pr10322_f2(%pr10322_t* nonnull [[ARRAYIDX8]]) #[[ATTR0]]
; CHECK-NEXT:    [[T2:%.*]] = getelementptr inbounds [[PR10322_T]], %pr10322_t* [[ARRAYIDX8]], i64 0, i32 0
; CHECK-NEXT:    call void @pr10322_f3(i8** nonnull [[T2]]) #[[ATTR0]]
; CHECK-NEXT:    ret void
;
entry:
  %arrayidx8 = getelementptr inbounds %pr10322_t, %pr10322_t* %foo, i64 2
  call void @pr10322_f2(%pr10322_t* %arrayidx8) nounwind
  %t2 = getelementptr inbounds %pr10322_t, %pr10322_t* %arrayidx8, i64 0, i32 0
  call void @pr10322_f3(i8** %t2) nounwind
  ret void

}

; Test that we combine the last two geps in this sequence, before we
; would wait for gep1 and gep2 to be combined and never combine 2 and 3.
%three_gep_t = type {i32}
%three_gep_t2 = type {%three_gep_t}

define void @three_gep_f(%three_gep_t2* %x) {
; CHECK-LABEL: @three_gep_f(
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr [[THREE_GEP_T2:%.*]], %three_gep_t2* [[X:%.*]], i64 2
; CHECK-NEXT:    call void @three_gep_h(%three_gep_t2* [[GEP1]])
; CHECK-NEXT:    [[GEP3:%.*]] = getelementptr [[THREE_GEP_T2]], %three_gep_t2* [[GEP1]], i64 0, i32 0, i32 0
; CHECK-NEXT:    call void @three_gep_g(i32* [[GEP3]])
; CHECK-NEXT:    ret void
;
  %gep1 = getelementptr %three_gep_t2, %three_gep_t2* %x, i64 2
  call void @three_gep_h(%three_gep_t2* %gep1)
  %gep2 = getelementptr %three_gep_t2, %three_gep_t2* %gep1, i64 0, i32 0
  %gep3 = getelementptr %three_gep_t, %three_gep_t* %gep2, i64 0, i32 0
  call void @three_gep_g(i32* %gep3)

  ret void
}

declare void @three_gep_g(i32*)
declare void @three_gep_h(%three_gep_t2*)

%struct.ham = type { i32, %struct.zot*, %struct.zot*, %struct.zot* }
%struct.zot = type { i64, i8 }

define void @test39(%struct.ham* %arg, i8 %arg1) nounwind {
; CHECK-LABEL: @test39(
; CHECK-NEXT:    [[T:%.*]] = getelementptr inbounds [[STRUCT_HAM:%.*]], %struct.ham* [[ARG:%.*]], i64 0, i32 2
; CHECK-NEXT:    [[TMP1:%.*]] = bitcast %struct.zot** [[T]] to i8**
; CHECK-NEXT:    [[T21:%.*]] = load i8*, i8** [[TMP1]], align 8
; CHECK-NEXT:    [[T4:%.*]] = getelementptr inbounds i8, i8* [[T21]], i64 -8
; CHECK-NEXT:    store i8 [[ARG1:%.*]], i8* [[T4]], align 8
; CHECK-NEXT:    ret void
;
  %t = getelementptr inbounds %struct.ham, %struct.ham* %arg, i64 0, i32 2
  %t2 = load %struct.zot*, %struct.zot** %t, align 8
  %t3 = bitcast %struct.zot* %t2 to i8*
  %t4 = getelementptr inbounds i8, i8* %t3, i64 -8
  store i8 %arg1, i8* %t4, align 8
  ret void

}

define i1 @pr16483([1 x i8]* %a, [1 x i8]* %b) {
; CHECK-LABEL: @pr16483(
; CHECK-NEXT:    [[CMP:%.*]] = icmp ult [1 x i8]* [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    ret i1 [[CMP]]
;
  %c = getelementptr [1 x i8], [1 x i8]* %a, i32 0, i32 0
  %d = getelementptr [1 x i8], [1 x i8]* %b, i32 0, i32 0
  %cmp = icmp ult i8* %c, %d
  ret i1 %cmp

}

define i8 @test_gep_bitcast_as1(i32 addrspace(1)* %arr, i16 %N) {
; CHECK-LABEL: @test_gep_bitcast_as1(
; CHECK-NEXT:    [[T1:%.*]] = getelementptr i32, i32 addrspace(1)* [[ARR:%.*]], i16 [[N:%.*]]
; CHECK-NEXT:    [[T:%.*]] = bitcast i32 addrspace(1)* [[T1]] to i8 addrspace(1)*
; CHECK-NEXT:    [[X:%.*]] = load i8, i8 addrspace(1)* [[T]], align 1
; CHECK-NEXT:    ret i8 [[X]]
;
  %cast = bitcast i32 addrspace(1)* %arr to i8 addrspace(1)*
  %V = mul i16 %N, 4
  %t = getelementptr i8, i8 addrspace(1)* %cast, i16 %V
  %x = load i8, i8 addrspace(1)* %t
  ret i8 %x
}

; The element size of the array matches the element size of the pointer
define i64 @test_gep_bitcast_array_same_size_element([100 x double]* %arr, i64 %N) {
; CHECK-LABEL: @test_gep_bitcast_array_same_size_element(
; CHECK-NEXT:    [[V:%.*]] = shl i64 [[N:%.*]], 3
; CHECK-NEXT:    [[T1:%.*]] = getelementptr [100 x double], [100 x double]* [[ARR:%.*]], i64 0, i64 [[V]]
; CHECK-NEXT:    [[T:%.*]] = bitcast double* [[T1]] to i64*
; CHECK-NEXT:    [[X:%.*]] = load i64, i64* [[T]], align 4
; CHECK-NEXT:    ret i64 [[X]]
;
  %cast = bitcast [100 x double]* %arr to i64*
  %V = mul i64 %N, 8
  %t = getelementptr i64, i64* %cast, i64 %V
  %x = load i64, i64* %t
  ret i64 %x
}

; gep should be done in the original address space.
define i64 @test_gep_bitcast_array_same_size_element_addrspacecast([100 x double]* %arr, i64 %N) {
; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_addrspacecast(
; CHECK-NEXT:    [[V:%.*]] = shl i64 [[N:%.*]], 3
; CHECK-NEXT:    [[T1:%.*]] = getelementptr [100 x double], [100 x double]* [[ARR:%.*]], i64 0, i64 [[V]]
; CHECK-NEXT:    [[TMP1:%.*]] = bitcast double* [[T1]] to i64*
; CHECK-NEXT:    [[T:%.*]] = addrspacecast i64* [[TMP1]] to i64 addrspace(3)*
; CHECK-NEXT:    [[X:%.*]] = load i64, i64 addrspace(3)* [[T]], align 4
; CHECK-NEXT:    ret i64 [[X]]
;
  %cast = addrspacecast [100 x double]* %arr to i64 addrspace(3)*
  %V = mul i64 %N, 8
  %t = getelementptr i64, i64 addrspace(3)* %cast, i64 %V
  %x = load i64, i64 addrspace(3)* %t
  ret i64 %x
}

; The element size of the array is different the element size of the pointer
define i8 @test_gep_bitcast_array_different_size_element([100 x double]* %arr, i64 %N) {
; CHECK-LABEL: @test_gep_bitcast_array_different_size_element(
; CHECK-NEXT:    [[T1:%.*]] = getelementptr [100 x double], [100 x double]* [[ARR:%.*]], i64 0, i64 [[N:%.*]]
; CHECK-NEXT:    [[T:%.*]] = bitcast double* [[T1]] to i8*
; CHECK-NEXT:    [[X:%.*]] = load i8, i8* [[T]], align 1
; CHECK-NEXT:    ret i8 [[X]]
;
  %cast = bitcast [100 x double]* %arr to i8*
  %V = mul i64 %N, 8
  %t = getelementptr i8, i8* %cast, i64 %V
  %x = load i8, i8* %t
  ret i8 %x
}

define i64 @test_gep_bitcast_array_same_size_element_as1([100 x double] addrspace(1)* %arr, i16 %N) {
; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_as1(
; CHECK-NEXT:    [[V:%.*]] = shl i16 [[N:%.*]], 3
; CHECK-NEXT:    [[T1:%.*]] = getelementptr [100 x double], [100 x double] addrspace(1)* [[ARR:%.*]], i16 0, i16 [[V]]
; CHECK-NEXT:    [[T:%.*]] = bitcast double addrspace(1)* [[T1]] to i64 addrspace(1)*
; CHECK-NEXT:    [[X:%.*]] = load i64, i64 addrspace(1)* [[T]], align 4
; CHECK-NEXT:    ret i64 [[X]]
;
  %cast = bitcast [100 x double] addrspace(1)* %arr to i64 addrspace(1)*
  %V = mul i16 %N, 8
  %t = getelementptr i64, i64 addrspace(1)* %cast, i16 %V
  %x = load i64, i64 addrspace(1)* %t
  ret i64 %x
}

define i8 @test_gep_bitcast_array_different_size_element_as1([100 x double] addrspace(1)* %arr, i16 %N) {
; CHECK-LABEL: @test_gep_bitcast_array_different_size_element_as1(
; CHECK-NEXT:    [[T1:%.*]] = getelementptr [100 x double], [100 x double] addrspace(1)* [[ARR:%.*]], i16 0, i16 [[N:%.*]]
; CHECK-NEXT:    [[T:%.*]] = bitcast double addrspace(1)* [[T1]] to i8 addrspace(1)*
; CHECK-NEXT:    [[X:%.*]] = load i8, i8 addrspace(1)* [[T]], align 1
; CHECK-NEXT:    ret i8 [[X]]
;
  %cast = bitcast [100 x double] addrspace(1)* %arr to i8 addrspace(1)*
  %V = mul i16 %N, 8
  %t = getelementptr i8, i8 addrspace(1)* %cast, i16 %V
  %x = load i8, i8 addrspace(1)* %t
  ret i8 %x
}

define i64 @test40() {
; CHECK-LABEL: @test40(
; CHECK-NEXT:    ret i64 8
;
  %array = alloca [3 x i32], align 4
  %gep = getelementptr inbounds [3 x i32], [3 x i32]* %array, i64 0, i64 2
  %gepi8 = bitcast i32* %gep to i8*
  %p = ptrtoint [3 x i32]* %array to i64
  %np = sub i64 0, %p
  %gep2 = getelementptr i8, i8* %gepi8, i64 %np
  %ret = ptrtoint i8* %gep2 to i64
  ret i64 %ret

}

define i16 @test41([3 x i32] addrspace(1)* %array) {
; CHECK-LABEL: @test41(
; CHECK-NEXT:    ret i16 8
;
  %gep = getelementptr inbounds [3 x i32], [3 x i32] addrspace(1)* %array, i16 0, i16 2
  %gepi8 = bitcast i32 addrspace(1)* %gep to i8 addrspace(1)*
  %p = ptrtoint [3 x i32] addrspace(1)* %array to i16
  %np = sub i16 0, %p
  %gep2 = getelementptr i8, i8 addrspace(1)* %gepi8, i16 %np
  %ret = ptrtoint i8 addrspace(1)* %gep2 to i16
  ret i16 %ret

}

define i8* @test42i(i8* %c1, i8* %c2) {
; CHECK-LABEL: @test42i(
; CHECK-NEXT:    [[PTRTOINT:%.*]] = ptrtoint i8* [[C1:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds i8, i8* [[C2:%.*]], i64 [[SUB]]
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %ptrtoint = ptrtoint i8* %c1 to i64
  %sub = sub i64 0, %ptrtoint
  %gep = getelementptr inbounds i8, i8* %c2, i64 %sub
  ret i8* %gep

}

define i8* @test42(i8* %c1, i8* %c2) {
; CHECK-LABEL: @test42(
; CHECK-NEXT:    [[PTRTOINT:%.*]] = ptrtoint i8* [[C1:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr i8, i8* [[C2:%.*]], i64 [[SUB]]
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %ptrtoint = ptrtoint i8* %c1 to i64
  %sub = sub i64 0, %ptrtoint
  %gep = getelementptr i8, i8* %c2, i64 %sub
  ret i8* %gep

}

define i16* @test43i(i16* %c1, i16* %c2) {
; CHECK-LABEL: @test43i(
; CHECK-NEXT:    [[PTRTOINT:%.*]] = ptrtoint i16* [[C1:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
; CHECK-NEXT:    [[SHR:%.*]] = ashr i64 [[SUB]], 1
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds i16, i16* [[C2:%.*]], i64 [[SHR]]
; CHECK-NEXT:    ret i16* [[GEP]]
;
  %ptrtoint = ptrtoint i16* %c1 to i64
  %sub = sub i64 0, %ptrtoint
  %shr = ashr i64 %sub, 1
  %gep = getelementptr inbounds i16, i16* %c2, i64 %shr
  ret i16* %gep

}

define %struct.C* @test44i(%struct.C* %c1, %struct.C* %c2) {
; CHECK-LABEL: @test44i(
; CHECK-NEXT:    [[PTRTOINT:%.*]] = ptrtoint %struct.C* [[C1:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
; CHECK-NEXT:    [[SHR:%.*]] = sdiv i64 [[SUB]], 7
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[STRUCT_C:%.*]], %struct.C* [[C2:%.*]], i64 [[SHR]]
; CHECK-NEXT:    ret %struct.C* [[GEP]]
;
  %ptrtoint = ptrtoint %struct.C* %c1 to i64
  %sub = sub i64 0, %ptrtoint
  %shr = sdiv i64 %sub, 7
  %gep = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %shr
  ret %struct.C* %gep

}

define %struct.C* @test45(%struct.C* %c1, %struct.C** %c2) {
; CHECK-LABEL: @test45(
; CHECK-NEXT:    [[PTRTOINT1:%.*]] = ptrtoint %struct.C* [[C1:%.*]] to i64
; CHECK-NEXT:    [[PTRTOINT2:%.*]] = ptrtoint %struct.C** [[C2:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]]
; CHECK-NEXT:    [[SHR:%.*]] = sdiv i64 [[SUB]], 7
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[STRUCT_C:%.*]], %struct.C* [[C1]], i64 [[SHR]]
; CHECK-NEXT:    ret %struct.C* [[GEP]]
;
  %ptrtoint1 = ptrtoint %struct.C* %c1 to i64
  %ptrtoint2 = ptrtoint %struct.C** %c2 to i64
  %sub = sub i64 %ptrtoint2, %ptrtoint1 ; C2 - C1
  %shr = sdiv i64 %sub, 7
  %gep = getelementptr inbounds %struct.C, %struct.C* %c1, i64 %shr ; C1 + (C2 - C1)
  ret %struct.C* %gep
}

define %struct.C* @test46(%struct.C* %c1, %struct.C* %c2, i64 %N) {
; CHECK-LABEL: @test46(
; CHECK-NEXT:    [[PTRTOINT:%.*]] = ptrtoint %struct.C* [[C1:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
; CHECK-NEXT:    [[SDIV:%.*]] = sdiv i64 [[SUB]], [[N:%.*]]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[STRUCT_C:%.*]], %struct.C* [[C2:%.*]], i64 [[SDIV]]
; CHECK-NEXT:    ret %struct.C* [[GEP]]
;
  %ptrtoint = ptrtoint %struct.C* %c1 to i64
  %sub = sub i64 0, %ptrtoint
  %sdiv = sdiv i64 %sub, %N
  %gep = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %sdiv
  ret %struct.C* %gep

}

define i32* @test47(i32* %I, i64 %C, i64 %D) {
; CHECK-LABEL: @test47(
; CHECK-NEXT:    [[B:%.*]] = getelementptr i32, i32* [[I:%.*]], i64 [[D:%.*]]
; CHECK-NEXT:    ret i32* [[B]]
;
  %sub = sub i64 %D, %C
  %A = getelementptr i32, i32* %I, i64 %C
  %B = getelementptr i32, i32* %A, i64 %sub
  ret i32* %B
}

define i32* @test48(i32* %I, i64 %C, i64 %D) {
; CHECK-LABEL: @test48(
; CHECK-NEXT:    [[B:%.*]] = getelementptr i32, i32* [[I:%.*]], i64 [[D:%.*]]
; CHECK-NEXT:    ret i32* [[B]]
;
  %sub = sub i64 %D, %C
  %A = getelementptr i32, i32* %I, i64 %sub
  %B = getelementptr i32, i32* %A, i64 %C
  ret i32* %B
}

define i32* @test49(i32* %I, i64 %C) {
; CHECK-LABEL: @test49(
; CHECK-NEXT:    [[B:%.*]] = getelementptr i32, i32* [[I:%.*]], i64 -1
; CHECK-NEXT:    ret i32* [[B]]
;
  %notC = xor i64 -1, %C
  %A = getelementptr i32, i32* %I, i64 %C
  %B = getelementptr i32, i32* %A, i64 %notC
  ret i32* %B
}

define i32 addrspace(1)* @ascast_0_gep(i32* %p) nounwind {
; CHECK-LABEL: @ascast_0_gep(
; CHECK-NEXT:    [[X:%.*]] = addrspacecast i32* [[P:%.*]] to i32 addrspace(1)*
; CHECK-NEXT:    ret i32 addrspace(1)* [[X]]
;
  %gep = getelementptr i32, i32* %p, i32 0
  %x = addrspacecast i32* %gep to i32 addrspace(1)*
  ret i32 addrspace(1)* %x
}

; Do not merge the GEP and the addrspacecast, because it would undo the
; addrspacecast canonicalization.
define i32 addrspace(1)* @ascast_0_0_gep([128 x i32]* %p) nounwind {
; CHECK-LABEL: @ascast_0_0_gep(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr [128 x i32], [128 x i32]* [[P:%.*]], i64 0, i64 0
; CHECK-NEXT:    [[X:%.*]] = addrspacecast i32* [[GEP]] to i32 addrspace(1)*
; CHECK-NEXT:    ret i32 addrspace(1)* [[X]]
;
  %gep = getelementptr [128 x i32], [128 x i32]* %p, i32 0, i32 0
  %x = addrspacecast i32* %gep to i32 addrspace(1)*
  ret i32 addrspace(1)* %x
}

define <2 x i32*> @PR32414(i32** %ptr) {
; CHECK-LABEL: @PR32414(
; CHECK-NEXT:    [[T0:%.*]] = bitcast i32** [[PTR:%.*]] to i32*
; CHECK-NEXT:    [[T1:%.*]] = getelementptr inbounds i32, i32* [[T0]], <2 x i64> <i64 0, i64 1>
; CHECK-NEXT:    ret <2 x i32*> [[T1]]
;
  %t0 = bitcast i32** %ptr to i32*
  %t1 = getelementptr inbounds i32, i32* %t0, <2 x i64> <i64 0, i64 1>
  ret <2 x i32*> %t1
}

define i32* @test_bitcast_nzgep([1 x i32]* %base, i64 %idx) {
; CHECK-LABEL: @test_bitcast_nzgep(
; CHECK-NEXT:    [[PTR:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* [[BASE:%.*]], i64 0, i64 [[IDX:%.*]]
; CHECK-NEXT:    ret i32* [[PTR]]
;
  %base2 = bitcast [1 x i32]* %base to i32*
  %ptr = getelementptr inbounds i32, i32* %base2, i64 %idx
  ret i32* %ptr
}

define i32* @test_zgep_nzgep([1 x i32]* %base, i64 %idx) {
; CHECK-LABEL: @test_zgep_nzgep(
; CHECK-NEXT:    [[PTR:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* [[BASE:%.*]], i64 0, i64 [[IDX:%.*]]
; CHECK-NEXT:    ret i32* [[PTR]]
;
  %base2 = getelementptr [1 x i32], [1 x i32]* %base, i64 0, i64 0
  %ptr = getelementptr inbounds i32, i32* %base2, i64 %idx
  ret i32* %ptr
}

define i32* @test_nzgep_zgep([1 x i32]* %base, i64 %idx) {
; CHECK-LABEL: @test_nzgep_zgep(
; CHECK-NEXT:    [[PTR:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* [[BASE:%.*]], i64 [[IDX:%.*]], i64 0
; CHECK-NEXT:    ret i32* [[PTR]]
;
  %base2 = getelementptr inbounds [1 x i32], [1 x i32]* %base, i64 %idx
  %ptr = getelementptr [1 x i32], [1 x i32]* %base2, i64 0, i64 0
  ret i32* %ptr
}

define i32* @test_gep_inbounds_of_gep(i32* %base) {
; CHECK-LABEL: @test_gep_inbounds_of_gep(
; CHECK-NEXT:    [[PTR2:%.*]] = getelementptr i32, i32* [[BASE:%.*]], i64 8
; CHECK-NEXT:    ret i32* [[PTR2]]
;
  %ptr1 = getelementptr i32, i32* %base, i64 4
  %ptr2 = getelementptr inbounds i32, i32* %ptr1, i64 4
  ret i32* %ptr2
}

%struct.f = type { i32 }

@g0 = internal unnamed_addr constant %struct.f zeroinitializer, align 4
@g1 = internal unnamed_addr constant %struct.f { i32 -1 }, align 4

define i32* @PR45084(i1 %cond) {
; CHECK-LABEL: @PR45084(
; CHECK-NEXT:    [[GEP:%.*]] = select i1 [[COND:%.*]], i32* getelementptr inbounds ([[STRUCT_F:%.*]], %struct.f* @g0, i64 0, i32 0), i32* getelementptr inbounds ([[STRUCT_F]], %struct.f* @g1, i64 0, i32 0), !prof [[PROF0:![0-9]+]]
; CHECK-NEXT:    ret i32* [[GEP]]
;
  %sel = select i1 %cond, %struct.f* @g0, %struct.f* @g1, !prof !0
  %gep = getelementptr inbounds %struct.f, %struct.f* %sel, i64 0, i32 0
  ret i32* %gep
}

define i32* @PR45084_extra_use(i1 %cond, %struct.f** %p) {
; CHECK-LABEL: @PR45084_extra_use(
; CHECK-NEXT:    [[SEL:%.*]] = select i1 [[COND:%.*]], %struct.f* @g0, %struct.f* @g1
; CHECK-NEXT:    store %struct.f* [[SEL]], %struct.f** [[P:%.*]], align 8
; CHECK-NEXT:    [[GEP:%.*]] = select i1 [[COND]], i32* getelementptr inbounds ([[STRUCT_F:%.*]], %struct.f* @g0, i64 0, i32 0), i32* getelementptr inbounds ([[STRUCT_F]], %struct.f* @g1, i64 0, i32 0)
; CHECK-NEXT:    ret i32* [[GEP]]
;
  %sel = select i1 %cond, %struct.f* @g0, %struct.f* @g1
  store %struct.f* %sel, %struct.f** %p
  %gep = getelementptr %struct.f, %struct.f* %sel, i64 0, i32 0
  ret i32* %gep
}

define i8* @gep_null_inbounds(i64 %idx) {
; CHECK-LABEL: @gep_null_inbounds(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds i8, i8* null, i64 [[IDX:%.*]]
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %gep = getelementptr inbounds i8, i8* null, i64 %idx
  ret i8* %gep
}

define i8* @gep_null_not_inbounds(i64 %idx) {
; CHECK-LABEL: @gep_null_not_inbounds(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr i8, i8* null, i64 [[IDX:%.*]]
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %gep = getelementptr i8, i8* null, i64 %idx
  ret i8* %gep
}

define i8* @gep_null_defined(i64 %idx) null_pointer_is_valid {
; CHECK-LABEL: @gep_null_defined(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds i8, i8* null, i64 [[IDX:%.*]]
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %gep = getelementptr inbounds i8, i8* null, i64 %idx
  ret i8* %gep
}

define i8* @gep_null_inbounds_different_type(i64 %idx1, i64 %idx2) {
; CHECK-LABEL: @gep_null_inbounds_different_type(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [0 x i8], [0 x i8]* null, i64 0, i64 [[IDX2:%.*]]
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %gep = getelementptr inbounds [0 x i8], [0 x i8]* null, i64 %idx1, i64 %idx2
  ret i8* %gep
}

define i8* @D98588(i8* %c1, i64 %offset) {
; CHECK-LABEL: @D98588(
; CHECK-NEXT:    [[C2:%.*]] = bitcast i8* [[C1:%.*]] to i64*
; CHECK-NEXT:    [[C2_NEXT:%.*]] = getelementptr inbounds i64, i64* [[C2]], i64 [[OFFSET:%.*]]
; CHECK-NEXT:    [[GEP:%.*]] = bitcast i64* [[C2_NEXT]] to i8*
; CHECK-NEXT:    ret i8* [[GEP]]
;
  %c2 = bitcast i8* %c1 to i64*
  %c2_next = getelementptr inbounds i64, i64* %c2, i64 %offset
  %ptrtoint1 = ptrtoint i8* %c1 to i64
  %ptrtoint2 = ptrtoint i64* %c2_next to i64
  %sub = sub i64 %ptrtoint2, %ptrtoint1 ; C2 - C1
  %gep = getelementptr inbounds i8, i8* %c1, i64 %sub ; C1 + (C2 - C1)
  ret i8* %gep
}

declare noalias i8* @malloc(i64) nounwind

define i32 @test_gep_bitcast_malloc(%struct.A* %a) {
; CHECK-LABEL: @test_gep_bitcast_malloc(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CALL:%.*]] = call noalias dereferenceable_or_null(16) i8* @malloc(i64 16)
; CHECK-NEXT:    [[B:%.*]] = bitcast i8* [[CALL]] to %struct.A*
; CHECK-NEXT:    [[G3:%.*]] = getelementptr [[STRUCT_A:%.*]], %struct.A* [[B]], i64 0, i32 2
; CHECK-NEXT:    [[A_C:%.*]] = load i32, i32* [[G3]], align 4
; CHECK-NEXT:    ret i32 [[A_C]]
;
entry:
  %call = call noalias i8* @malloc(i64 16) #2
  %B = bitcast i8* %call to %struct.A*
  %g3 = getelementptr %struct.A, %struct.A* %B, i32 0, i32 2
  %a_c = load i32, i32* %g3, align 4
  ret i32 %a_c
}

!0 = !{!"branch_weights", i32 2, i32 10}