1 ; RUN: llc -march=arm64 -o - %s | 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 10 define 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
