llvm/test/Transforms/InferAlignment/ptrtoint.ll

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

define i64 @base(ptr %ptr) {
; CHECK-LABEL: define i64 @base(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[V1:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT:    [[V3:%.*]] = ptrtoint ptr [[PTR]] to i64
; CHECK-NEXT:    [[V5:%.*]] = and i64 [[V3]], 2
; CHECK-NEXT:    ret i64 0
;
  %v1 = load i32, ptr %ptr, align 4
  %v3 = ptrtoint ptr %ptr to i64
  %v5 = and i64 %v3, 2
  ret i64 %v5
}

define i64 @best_alignment(ptr %ptr) {
; CHECK-LABEL: define i64 @best_alignment(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[V1:%.*]] = load i32, ptr [[PTR]], align 8
; CHECK-NEXT:    [[V2:%.*]] = load i32, ptr [[PTR]], align 16
; CHECK-NEXT:    [[V3:%.*]] = ptrtoint ptr [[PTR]] to i64
; CHECK-NEXT:    [[V5:%.*]] = and i64 [[V3]], 15
; CHECK-NEXT:    ret i64 0
;
  %v1 = load i32, ptr %ptr, align 8
  %v2 = load i32, ptr %ptr, align 16
  %v3 = ptrtoint ptr %ptr to i64
  %v5 = and i64 %v3, 15
  ret i64 %v5
}

declare void @func()

define i64 @negative_test(ptr %ptr) {
; CHECK-LABEL: define i64 @negative_test(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[V3:%.*]] = ptrtoint ptr [[PTR]] to i64
; CHECK-NEXT:    [[V5:%.*]] = and i64 [[V3]], 2
; CHECK-NEXT:    call void @func()
; CHECK-NEXT:    [[V1:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT:    ret i64 [[V5]]
;
  %v3 = ptrtoint ptr %ptr to i64
  %v5 = and i64 %v3, 2
  call void @func()
  %v1 = load i32, ptr %ptr, align 4
  ret i64 %v5
}

define i64 @ptrtoaddr(ptr %ptr) {
; CHECK-LABEL: define i64 @ptrtoaddr(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[V3:%.*]] = ptrtoaddr ptr [[PTR]] to i64
; CHECK-NEXT:    [[V1:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT:    [[V5:%.*]] = and i64 [[V3]], 2
; CHECK-NEXT:    ret i64 0
;
  %v3 = ptrtoaddr ptr %ptr to i64
  %v1 = load i32, ptr %ptr, align 4
  %v5 = and i64 %v3, 2
  ret i64 %v5
}

define i64 @redundant_mask(ptr %ptr) {
; CHECK-LABEL: define i64 @redundant_mask(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[LOAD:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT:    [[INT:%.*]] = ptrtoint ptr [[PTR]] to i64
; CHECK-NEXT:    [[MASK:%.*]] = and i64 [[INT]], -4
; CHECK-NEXT:    ret i64 [[INT]]
;
  %load = load i32, ptr %ptr, align 4
  %int = ptrtoint ptr %ptr to i64
  %mask = and i64 %int, -4
  ret i64 %mask
}

define i64 @redundant_mask2(ptr %ptr) {
; CHECK-LABEL: define i64 @redundant_mask2(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[LOAD:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT:    [[INT:%.*]] = ptrtoint ptr [[PTR]] to i64
; CHECK-NEXT:    [[MASK:%.*]] = and i64 [[INT]], -3
; CHECK-NEXT:    ret i64 [[INT]]
;
  %load = load i32, ptr %ptr, align 4
  %int = ptrtoint ptr %ptr to i64
  %mask = and i64 %int, -3
  ret i64 %mask
}

define i64 @not_redundant_mask(ptr %ptr) {
; CHECK-LABEL: define i64 @not_redundant_mask(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[LOAD:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT:    [[INT:%.*]] = ptrtoint ptr [[PTR]] to i64
; CHECK-NEXT:    [[MASK:%.*]] = and i64 [[INT]], -5
; CHECK-NEXT:    ret i64 [[MASK]]
;
  %load = load i32, ptr %ptr, align 4
  %int = ptrtoint ptr %ptr to i64
  %mask = and i64 %int, -5
  ret i64 %mask
}