[arm64] JIT: Volatile.Write emits full memory barrier for floats #67254
Description
double _location = 0;
double _newValue = 1;
void Write_double() =>
Volatile.Write(ref _location, _newValue);Currently emits a full memory barrier on arm64:
A9BF7BFD stp fp, lr, [sp,#-16]!
910003FD mov fp, sp
G_M10964_IG02:
91002001 add x1, x0, #8
FD400810 ldr d16, [x0,#16]
D5033BBF dmb ish ;; <---
FD000030 str d16, [x1]
G_M10964_IG03:
A8C17BFD ldp fp, lr, [sp],#16
D65F03C0 ret lrExpected - use stlr + fmov
category:cq
theme:volatile