Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2019-01-23 08:21:40 +00:00
parent a7724cd563
commit 279aa8f685
28482 changed files with 3866972 additions and 44 deletions

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; RUN: llc < %s -mtriple=arm64-eabi | 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
}