23 lines
687 B
LLVM
23 lines
687 B
LLVM
; RUN: llc -march=arm64 -o - %s | FileCheck %s
|
|
|
|
; ARM64ISelLowering.cpp was creating a new (floating-point) load for efficiency
|
|
; but not updating chain-successors of the old one. As a result, the two memory
|
|
; operations in this function both ended up direct successors to the EntryToken
|
|
; and could be reordered.
|
|
|
|
@var = global i32 0, align 4
|
|
|
|
define float @foo() {
|
|
; CHECK-LABEL: foo:
|
|
; Load must come before we clobber @var
|
|
; CHECK: adrp x[[VARBASE:[0-9]+]], {{_?var}}
|
|
; CHECK: ldr [[SREG:s[0-9]+]], [x[[VARBASE]],
|
|
; CHECK: str wzr, [x[[VARBASE]],
|
|
|
|
%val = load i32, i32* @var, align 4
|
|
store i32 0, i32* @var, align 4
|
|
|
|
%fltval = sitofp i32 %val to float
|
|
ret float %fltval
|
|
}
|