1; RUN: llc < %s -mtriple=arm64-eabi | FileCheck %s 2 3; ARM64ISelLowering.cpp was creating a new (floating-point) load for efficiency 4; but not updating chain-successors of the old one. As a result, the two memory 5; operations in this function both ended up direct successors to the EntryToken 6; and could be reordered. 7 8@var = global i32 0, align 4 9 10define float @foo() { 11; CHECK-LABEL: foo: 12 ; Load must come before we clobber @var 13; CHECK: adrp x[[VARBASE:[0-9]+]], {{_?var}} 14; CHECK: ldr [[SREG:s[0-9]+]], [x[[VARBASE]], 15; CHECK: str wzr, [x[[VARBASE]], 16 17 %val = load i32, i32* @var, align 4 18 store i32 0, i32* @var, align 4 19 20 %fltval = sitofp i32 %val to float 21 ret float %fltval 22} 23