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

%t = type { i32 }
declare void @test1f(ptr)

; `%stuff` is noalias, `test1f` receives only null, cannot clobber `%stuff`,
; thus the second load is dead.
define void @test1(ptr noalias %stuff) {
; CHECK-LABEL: define void @test1(
; CHECK-SAME: ptr noalias [[STUFF:%.*]]) {
; CHECK-NEXT:    [[BEFORE:%.*]] = load i32, ptr [[STUFF]], align 4
; CHECK-NEXT:    call void @test1f(ptr null)
; CHECK-NEXT:    [[SUM:%.*]] = add i32 [[BEFORE]], [[BEFORE]]
; CHECK-NEXT:    store i32 [[SUM]], ptr [[STUFF]], align 4
; CHECK-NEXT:    ret void
;
  %before = load i32, ptr %stuff
  call void @test1f(ptr null)
  %after = load i32, ptr %stuff
  %sum = add i32 %before, %after
  store i32 %sum, ptr %stuff
  ret void
}