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llvm/llvm/test/Transforms/GlobalOpt/sra-many-stores-once.ll 

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
; RUN: opt -passes=globalopt -S %s | FileCheck %s

target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"

%struct.20ptr = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
@global.20ptr = internal global %struct.20ptr zeroinitializer

declare i32 @fn0()
declare i32 @fn1()
declare i32 @fn2()
declare i32 @fn3()

;.
; CHECK: @[[GLOBAL_20PTR:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global [[STRUCT_20PTR:%.*]] zeroinitializer
;.

; FIXME: The loads from @global.20ptr cannot load null, as the loaded value are
; used as called operands. The loads and stores can be removed.
define void @test_stored_once_call_with_nullptr_ub() {
; CHECK-LABEL: @test_stored_once_call_with_nullptr_ub(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    store ptr @fn0, ptr @global.20ptr, align 8
; CHECK-NEXT:    store ptr @fn1, ptr @global.20ptr, align 8
; CHECK-NEXT:    store ptr @fn2, ptr getelementptr inbounds ([[STRUCT_20PTR:%.*]], ptr @global.20ptr, i64 0, i32 1), align 8
; CHECK-NEXT:    store ptr @fn3, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 2), align 8
; CHECK-NEXT:    store ptr @fn0, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 3), align 8
; CHECK-NEXT:    store ptr @fn1, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 4), align 8
; CHECK-NEXT:    store ptr @fn2, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 5), align 8
; CHECK-NEXT:    store ptr @fn3, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 6), align 8
; CHECK-NEXT:    store ptr @fn0, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 7), align 8
; CHECK-NEXT:    store ptr @fn1, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 8), align 8
; CHECK-NEXT:    store ptr @fn2, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 9), align 8
; CHECK-NEXT:    store ptr @fn3, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 10), align 8
; CHECK-NEXT:    store ptr @fn0, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 11), align 8
; CHECK-NEXT:    store ptr @fn1, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 12), align 8
; CHECK-NEXT:    store ptr @fn2, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 13), align 8
; CHECK-NEXT:    store ptr @fn3, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 14), align 8
; CHECK-NEXT:    store ptr @fn0, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 15), align 8
; CHECK-NEXT:    store ptr @fn1, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 16), align 8
; CHECK-NEXT:    [[L0:%.*]] = load ptr, ptr @global.20ptr, align 8
; CHECK-NEXT:    call void [[L0]]()
; CHECK-NEXT:    [[L1:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 1), align 8
; CHECK-NEXT:    call void [[L1]]()
; CHECK-NEXT:    [[L2:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 2), align 8
; CHECK-NEXT:    call void [[L2]]()
; CHECK-NEXT:    [[L3:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 3), align 8
; CHECK-NEXT:    call void [[L3]]()
; CHECK-NEXT:    [[L4:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 4), align 8
; CHECK-NEXT:    call void [[L4]]()
; CHECK-NEXT:    [[L5:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 5), align 8
; CHECK-NEXT:    call void [[L5]]()
; CHECK-NEXT:    [[L6:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 6), align 8
; CHECK-NEXT:    call void [[L6]]()
; CHECK-NEXT:    [[L7:%.*]] = load ptr, ptr @global.20ptr, align 8
; CHECK-NEXT:    call void [[L7]]()
; CHECK-NEXT:    [[L8:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 7), align 8
; CHECK-NEXT:    call void [[L8]]()
; CHECK-NEXT:    [[L9:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 8), align 8
; CHECK-NEXT:    call void [[L9]]()
; CHECK-NEXT:    [[L10:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 9), align 8
; CHECK-NEXT:    call void [[L10]]()
; CHECK-NEXT:    [[L11:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 10), align 8
; CHECK-NEXT:    call void [[L11]]()
; CHECK-NEXT:    [[L12:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 11), align 8
; CHECK-NEXT:    call void [[L12]]()
; CHECK-NEXT:    [[L13:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 12), align 8
; CHECK-NEXT:    call void [[L13]]()
; CHECK-NEXT:    [[L14:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 13), align 8
; CHECK-NEXT:    call void [[L14]]()
; CHECK-NEXT:    [[L15:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 14), align 8
; CHECK-NEXT:    call void [[L15]]()
; CHECK-NEXT:    [[L16:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 15), align 8
; CHECK-NEXT:    call void [[L16]]()
; CHECK-NEXT:    [[L17:%.*]] = load ptr, ptr getelementptr inbounds ([[STRUCT_20PTR]], ptr @global.20ptr, i64 0, i32 16), align 8
; CHECK-NEXT:    call void [[L17]]()
; CHECK-NEXT:    ret void
;
entry:
  store ptr @fn0, ptr @global.20ptr, align 8
  store ptr @fn1, ptr @global.20ptr, align 8
  store ptr @fn2, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 1), align 8
  store ptr @fn3, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 2), align 8
  store ptr @fn0, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 3), align 8
  store ptr @fn1, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 4), align 8
  store ptr @fn2, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 5), align 8
  store ptr @fn3, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 6), align 8
  store ptr @fn0, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 7), align 8
  store ptr @fn1, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 8), align 8
  store ptr @fn2, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 9), align 8
  store ptr @fn3, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 10), align 8
  store ptr @fn0, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 11), align 8
  store ptr @fn1, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 12), align 8
  store ptr @fn2, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 13), align 8
  store ptr @fn3, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 14), align 8
  store ptr @fn0, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 15), align 8
  store ptr @fn1, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 16), align 8

  %l0 = load ptr, ptr @global.20ptr, align 8
  call void %l0()
  %l1 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 1), align 8
  call void %l1()
  %l2 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 2), align 8
  call void %l2()
  %l3 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 3), align 8
  call void %l3()
  %l4 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 4), align 8
  call void %l4()
  %l5 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 5), align 8
  call void %l5()
  %l6 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 6), align 8
  call void %l6()
  %l7 = load ptr, ptr @global.20ptr, align 8
  call void %l7()
  %l8 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 7), align 8
  call void %l8()
  %l9 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 8), align 8
  call void %l9()
  %l10 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 9), align 8
  call void %l10()
  %l11 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 10), align 8
  call void %l11()
  %l12 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 11), align 8
  call void %l12()
  %l13 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 12), align 8
  call void %l13()
  %l14 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 13), align 8
  call void %l14()
  %l15 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 14), align 8
  call void %l15()
  %l16 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 15), align 8
  call void %l16()
  %l17 = load ptr, ptr getelementptr inbounds (%struct.20ptr, ptr @global.20ptr, i64 0, i32 16), align 8
  call void %l17()
  ret void
}