test/Transforms/InstSimplify/ptrtoaddr.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s

; The ptrtoaddr folds are also valid for pointers that have external state.
target datalayout = "pe1:64:64:64:32"

@g = external global i8
@g2 = external global i8

@g.as1 = external addrspace(1) global i8
@g2.as1 = external addrspace(1) global i8

define i64 @ptrtoaddr_inttoptr_arg(i64 %a) {
; CHECK-LABEL: define i64 @ptrtoaddr_inttoptr_arg(
; CHECK-SAME: i64 [[A:%.*]]) {
; CHECK-NEXT:    ret i64 [[A]]
;
  %toptr = inttoptr i64 %a to ptr
  %toaddr = ptrtoaddr ptr %toptr to i64
  ret i64 %toaddr
}

define i32 @ptrtoaddr_inttoptr_arg_addrsize(i32 %a) {
; CHECK-LABEL: define i32 @ptrtoaddr_inttoptr_arg_addrsize(
; CHECK-SAME: i32 [[A:%.*]]) {
; CHECK-NEXT:    ret i32 [[A]]
;
  %toptr = inttoptr i32 %a to ptr addrspace(1)
  %toaddr = ptrtoaddr ptr addrspace(1) %toptr to i32
  ret i32 %toaddr
}

define i32 @ptrtoaddr_inttoptr() {
; CHECK-LABEL: define i32 @ptrtoaddr_inttoptr() {
; CHECK-NEXT:    ret i32 -1
;
  %toptr = inttoptr i32 -1 to ptr addrspace(1)
  %toaddr = ptrtoaddr ptr addrspace(1) %toptr to i32
  ret i32 %toaddr
}

define i32 @ptrtoaddr_inttoptr_diff_size1() {
; CHECK-LABEL: define i32 @ptrtoaddr_inttoptr_diff_size1() {
; CHECK-NEXT:    ret i32 -1
;
  %toptr = inttoptr i64 -1 to ptr addrspace(1)
  %toaddr = ptrtoaddr ptr addrspace(1) %toptr to i32
  ret i32 %toaddr
}

define i32 @ptrtoaddr_inttoptr_diff_size2() {
; CHECK-LABEL: define i32 @ptrtoaddr_inttoptr_diff_size2() {
; CHECK-NEXT:    ret i32 65535
;
  %toptr = inttoptr i16 -1 to ptr addrspace(1)
  %toaddr = ptrtoaddr ptr addrspace(1) %toptr to i32
  ret i32 %toaddr
}

define i64 @ptrtoaddr_inttoptr_noas1() {
; CHECK-LABEL: define i64 @ptrtoaddr_inttoptr_noas1() {
; CHECK-NEXT:    ret i64 1
;
  %toptr = getelementptr i8, ptr null, i64 1
  %toaddr = ptrtoaddr ptr %toptr to i64
  ret i64 %toaddr
}

define i64 @ptr2addr2_inttoptr_noas2() {
; CHECK-LABEL: define i64 @ptr2addr2_inttoptr_noas2() {
; CHECK-NEXT:    ret i64 123
;
  %toptr = inttoptr i64 123 to ptr
  %toaddr = ptrtoaddr ptr %toptr to i64
  ret i64 %toaddr
}

define i64 @ptrtoaddr_inttoptr_noas_diff_size1() {
; CHECK-LABEL: define i64 @ptrtoaddr_inttoptr_noas_diff_size1() {
; CHECK-NEXT:    ret i64 4294967295
;
  %toptr = inttoptr i32 -1 to ptr
  %toaddr = ptrtoaddr ptr %toptr to i64
  ret i64 %toaddr
}

define i64 @ptrtoaddr_inttoptr_noas_diff_size2() {
; CHECK-LABEL: define i64 @ptrtoaddr_inttoptr_noas_diff_size2() {
; CHECK-NEXT:    ret i64 -1
;
  %toptr = inttoptr i128 -1 to ptr
  %toaddr = ptrtoaddr ptr %toptr to i64
  ret i64 %toaddr
}

define i64 @ptrtoaddr_gep_null() {
; CHECK-LABEL: define i64 @ptrtoaddr_gep_null() {
; CHECK-NEXT:    ret i64 42
;
  %toaddr = ptrtoaddr ptr getelementptr (i8, ptr null, i64 42) to i64
  ret i64 %toaddr
}

define i32 @ptrtoaddr_gep_null_addrsize() {
; CHECK-LABEL: define i32 @ptrtoaddr_gep_null_addrsize() {
; CHECK-NEXT:    ret i32 42
;
  %toaddr = ptrtoaddr ptr addrspace(1) getelementptr (i8, ptr addrspace(1) null, i32 42) to i32
  ret i32 %toaddr
}

define i64 @ptrtoaddr_gep_sub() {
; CHECK-LABEL: define i64 @ptrtoaddr_gep_sub() {
; CHECK-NEXT:    ret i64 sub (i64 ptrtoaddr (ptr @g to i64), i64 ptrtoaddr (ptr @g2 to i64))
;
  %toaddr = ptrtoaddr ptr getelementptr (i8, ptr @g, i64 sub (i64 0, i64 ptrtoaddr (ptr @g2 to i64))) to i64
  ret i64 %toaddr
}

define i32 @ptrtoaddr_gep_sub_addrsize() {
; CHECK-LABEL: define i32 @ptrtoaddr_gep_sub_addrsize() {
; CHECK-NEXT:    ret i32 sub (i32 ptrtoaddr (ptr addrspace(1) @g.as1 to i32), i32 ptrtoaddr (ptr addrspace(1) @g2.as1 to i32))
;
  %toaddr = ptrtoaddr ptr addrspace(1) getelementptr (i8, ptr addrspace(1) @g.as1, i32 sub (i32 0, i32 ptrtoaddr (ptr addrspace(1) @g2.as1 to i32))) to i32
  ret i32 %toaddr
}

; Don't fold inttoptr of ptrtoaddr away. inttoptr will pick a previously
; exposed provenance, which is not necessarily that of @g (especially as
; ptrtoaddr does not expose the provenance.)
define ptr @inttoptr_of_ptrtoaddr() {
; CHECK-LABEL: define ptr @inttoptr_of_ptrtoaddr() {
; CHECK-NEXT:    ret ptr inttoptr (i64 ptrtoaddr (ptr @g to i64) to ptr)
;
  %toptr = inttoptr i64 ptrtoaddr (ptr @g to i64) to ptr
  ret ptr %toptr
}

define i64 @ptrtoaddr_sub_consts_unrelated() {
; CHECK-LABEL: define i64 @ptrtoaddr_sub_consts_unrelated() {
; CHECK-NEXT:    ret i64 sub (i64 ptrtoaddr (ptr @g to i64), i64 ptrtoaddr (ptr @g2 to i64))
;
  %sub = sub i64 ptrtoaddr (ptr @g to i64), ptrtoaddr (ptr @g2 to i64)
  ret i64 %sub
}

define i64 @ptrtoaddr_sub_consts_offset() {
; CHECK-LABEL: define i64 @ptrtoaddr_sub_consts_offset() {
; CHECK-NEXT:    ret i64 42
;
  %sub = sub i64 ptrtoaddr (ptr getelementptr (i8, ptr @g, i64 42) to i64), ptrtoaddr (ptr @g to i64)
  ret i64 %sub
}

define i32 @ptrtoaddr_sub_consts_offset_addrsize() {
; CHECK-LABEL: define i32 @ptrtoaddr_sub_consts_offset_addrsize() {
; CHECK-NEXT:    ret i32 42
;
  %sub = sub i32 ptrtoaddr (ptr addrspace(1) getelementptr (i8, ptr addrspace(1) @g.as1, i32 42) to i32), ptrtoaddr (ptr addrspace(1) @g.as1 to i32)
  ret i32 %sub
}

define i64 @ptrtoaddr_sub_known_offset(ptr %p) {
; CHECK-LABEL: define i64 @ptrtoaddr_sub_known_offset(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:    ret i64 42
;
  %p2 = getelementptr inbounds i8, ptr %p, i64 42
  %p.addr = ptrtoaddr ptr %p to i64
  %p2.addr = ptrtoaddr ptr %p2 to i64
  %sub = sub i64 %p2.addr, %p.addr
  ret i64 %sub
}

define i32 @ptrtoaddr_sub_known_offset_addrsize(ptr addrspace(1) %p) {
; CHECK-LABEL: define i32 @ptrtoaddr_sub_known_offset_addrsize(
; CHECK-SAME: ptr addrspace(1) [[P:%.*]]) {
; CHECK-NEXT:    ret i32 42
;
  %p2 = getelementptr inbounds i8, ptr addrspace(1) %p, i32 42
  %p.addr = ptrtoaddr ptr addrspace(1) %p to i32
  %p2.addr = ptrtoaddr ptr addrspace(1) %p2 to i32
  %sub = sub i32 %p2.addr, %p.addr
  ret i32 %sub
}

define i64 @ptrtoaddr_of_ptradd_of_sub(i64 %x, ptr %p) {
; CHECK-LABEL: define i64 @ptrtoaddr_of_ptradd_of_sub(
; CHECK-SAME: i64 [[X:%.*]], ptr [[P:%.*]]) {
; CHECK-NEXT:    ret i64 [[X]]
;
  %p.addr = ptrtoaddr ptr %p to i64
  %sub = sub i64 %x, %p.addr
  %ptradd = getelementptr i8, ptr %p, i64 %sub
  %ptradd.addr = ptrtoaddr ptr %ptradd to i64
  ret i64 %ptradd.addr
}

define i32 @ptrtoaddr_of_ptradd_of_sub_addrsize(i32 %x, ptr addrspace(1) %p) {
; CHECK-LABEL: define i32 @ptrtoaddr_of_ptradd_of_sub_addrsize(
; CHECK-SAME: i32 [[X:%.*]], ptr addrspace(1) [[P:%.*]]) {
; CHECK-NEXT:    ret i32 [[X]]
;
  %p.addr = ptrtoaddr ptr addrspace(1) %p to i32
  %sub = sub i32 %x, %p.addr
  %ptradd = getelementptr i8, ptr addrspace(1) %p, i32 %sub
  %ptradd.addr = ptrtoaddr ptr addrspace(1) %ptradd to i32
  ret i32 %ptradd.addr
}

define ptr @gep_of_sub_ptrtoaddr_unrelated_pointers(ptr %p, ptr %p2, i64 %x) {
; CHECK-LABEL: define ptr @gep_of_sub_ptrtoaddr_unrelated_pointers(
; CHECK-SAME: ptr [[P:%.*]], ptr [[P2:%.*]], i64 [[X:%.*]]) {
; CHECK-NEXT:    [[P2_ADDR:%.*]] = ptrtoaddr ptr [[P2]] to i64
; CHECK-NEXT:    [[P_ADDR:%.*]] = ptrtoaddr ptr [[P]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub i64 [[P2_ADDR]], [[P_ADDR]]
; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr i8, ptr [[P]], i64 [[SUB]]
; CHECK-NEXT:    ret ptr [[GEP2]]
;
  %p2.addr = ptrtoaddr ptr %p2 to i64
  %p.addr = ptrtoaddr ptr %p to i64
  %sub = sub i64 %p2.addr, %p.addr
  %gep2 = getelementptr i8, ptr %p, i64 %sub
  ret ptr %gep2
}

define ptr @gep_of_sub_ptrtoaddr(ptr %p, i64 %x) {
; CHECK-LABEL: define ptr @gep_of_sub_ptrtoaddr(
; CHECK-SAME: ptr [[P:%.*]], i64 [[X:%.*]]) {
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr i8, ptr [[P]], i64 [[X]]
; CHECK-NEXT:    ret ptr [[GEP1]]
;
  %gep1 = getelementptr i8, ptr %p, i64 %x
  %gep1.addr = ptrtoaddr ptr %gep1 to i64
  %p.addr = ptrtoaddr ptr %p to i64
  %sub = sub i64 %gep1.addr, %p.addr
  %gep2 = getelementptr i8, ptr %p, i64 %sub
  ret ptr %gep2
}

define ptr addrspace(1) @gep_of_sub_ptrtoaddr_addrsize(ptr addrspace(1) %p, i32 %x) {
; CHECK-LABEL: define ptr addrspace(1) @gep_of_sub_ptrtoaddr_addrsize(
; CHECK-SAME: ptr addrspace(1) [[P:%.*]], i32 [[X:%.*]]) {
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr i8, ptr addrspace(1) [[P]], i32 [[X]]
; CHECK-NEXT:    ret ptr addrspace(1) [[GEP1]]
;
  %gep1 = getelementptr i8, ptr addrspace(1) %p, i32 %x
  %gep1.addr = ptrtoaddr ptr addrspace(1) %gep1 to i32
  %p.addr = ptrtoaddr ptr addrspace(1) %p to i32
  %sub = sub i32 %gep1.addr, %p.addr
  %gep2 = getelementptr i8, ptr addrspace(1) %p, i32 %sub
  ret ptr addrspace(1) %gep2
}

define ptr @gep_of_sub_ptrtoaddr_ashr(ptr %p, i64 %x) {
; CHECK-LABEL: define ptr @gep_of_sub_ptrtoaddr_ashr(
; CHECK-SAME: ptr [[P:%.*]], i64 [[X:%.*]]) {
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr i8, ptr [[P]], i64 [[X]]
; CHECK-NEXT:    ret ptr [[GEP1]]
;
  %gep1 = getelementptr i8, ptr %p, i64 %x
  %gep1.addr = ptrtoaddr ptr %gep1 to i64
  %p.addr = ptrtoaddr ptr %p to i64
  %sub = sub i64 %gep1.addr, %p.addr
  %ashr = ashr i64 %sub, 1
  %gep2 = getelementptr i16, ptr %p, i64 %ashr
  ret ptr %gep2
}

define ptr addrspace(1) @gep_of_sub_ptrtoaddr_ashr_addrsize(ptr addrspace(1) %p, i32 %x) {
; CHECK-LABEL: define ptr addrspace(1) @gep_of_sub_ptrtoaddr_ashr_addrsize(
; CHECK-SAME: ptr addrspace(1) [[P:%.*]], i32 [[X:%.*]]) {
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr i8, ptr addrspace(1) [[P]], i32 [[X]]
; CHECK-NEXT:    ret ptr addrspace(1) [[GEP1]]
;
  %gep1 = getelementptr i8, ptr addrspace(1) %p, i32 %x
  %gep1.addr = ptrtoaddr ptr addrspace(1) %gep1 to i32
  %p.addr = ptrtoaddr ptr addrspace(1) %p to i32
  %sub = sub i32 %gep1.addr, %p.addr
  %sdiv = sdiv i32 %sub, 3
  %gep2 = getelementptr [3 x i8], ptr addrspace(1) %p, i32 %sdiv
  ret ptr addrspace(1) %gep2
}

; Not folding this to inttoptr(123), as this may have different provenance from
; %p, and the use of ptrtoaddr implies that the provenance of %p may not be
; exposed, such that inttoptr cannot recover it.
define ptr @gep_gep_neg_ptrtoaddr(ptr %p) {
; CHECK-LABEL: define ptr @gep_gep_neg_ptrtoaddr(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 123
; CHECK-NEXT:    [[P_ADDR:%.*]] = ptrtoaddr ptr [[P]] to i64
; CHECK-NEXT:    [[P_ADDR_NEG:%.*]] = sub i64 0, [[P_ADDR]]
; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr i8, ptr [[GEP1]], i64 [[P_ADDR_NEG]]
; CHECK-NEXT:    ret ptr [[GEP2]]
;
  %gep1 = getelementptr inbounds i8, ptr %p, i64 123
  %p.addr = ptrtoaddr ptr %p to i64
  %p.addr.neg = sub i64 0, %p.addr
  %gep2 = getelementptr i8, ptr %gep1, i64 %p.addr.neg
  ret ptr %gep2
}

define ptr @gep_gep_inv_ptrtoaddr(ptr %p) {
; CHECK-LABEL: define ptr @gep_gep_inv_ptrtoaddr(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 123
; CHECK-NEXT:    [[P_ADDR:%.*]] = ptrtoaddr ptr [[P]] to i64
; CHECK-NEXT:    [[P_ADDR_INV:%.*]] = xor i64 [[P_ADDR]], -1
; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr i8, ptr [[GEP1]], i64 [[P_ADDR_INV]]
; CHECK-NEXT:    ret ptr [[GEP2]]
;
  %gep1 = getelementptr inbounds i8, ptr %p, i64 123
  %p.addr = ptrtoaddr ptr %p to i64
  %p.addr.inv = xor i64 %p.addr, -1
  %gep2 = getelementptr i8, ptr %gep1, i64 %p.addr.inv
  ret ptr %gep2
}