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https://github.com/c64scene-ar/llvm-6502.git
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6584d94610
Weak symbols cannot use the small code model's usual ADRP sequences since the instruction simply may not be able to encode a value of 0. This redirects them to use the GOT, which hopefully linkers are able to cope with even in the static relocation model. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205426 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.2 KiB
LLVM
55 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=arm64-none-linux-gnu -verify-machineinstrs -relocation-model=pic %s -o - | FileCheck %s
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@var = global i32 0
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define i32 @get_globalvar() {
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; CHECK-LABEL: get_globalvar:
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%val = load i32* @var
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; CHECK: adrp x[[GOTHI:[0-9]+]], :got:var
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; CHECK: ldr x[[GOTLOC:[0-9]+]], [x[[GOTHI]], :got_lo12:var]
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; CHECK: ldr w0, [x[[GOTLOC]]]
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ret i32 %val
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}
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define i32* @get_globalvaraddr() {
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; CHECK-LABEL: get_globalvaraddr:
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%val = load i32* @var
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; CHECK: adrp x[[GOTHI:[0-9]+]], :got:var
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; CHECK: ldr x0, [x[[GOTHI]], :got_lo12:var]
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ret i32* @var
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}
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@hiddenvar = hidden global i32 0
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define i32 @get_hiddenvar() {
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; CHECK-LABEL: get_hiddenvar:
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%val = load i32* @hiddenvar
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; CHECK: adrp x[[HI:[0-9]+]], hiddenvar
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; CHECK: ldr w0, [x[[HI]], :lo12:hiddenvar]
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ret i32 %val
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}
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define i32* @get_hiddenvaraddr() {
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; CHECK-LABEL: get_hiddenvaraddr:
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%val = load i32* @hiddenvar
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; CHECK: adrp [[HI:x[0-9]+]], hiddenvar
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; CHECK: add x0, [[HI]], :lo12:hiddenvar
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ret i32* @hiddenvar
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}
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define void()* @get_func() {
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; CHECK-LABEL: get_func:
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ret void()* bitcast(void()*()* @get_func to void()*)
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; CHECK: adrp x[[GOTHI:[0-9]+]], :got:get_func
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; CHECK: ldr x0, [x[[GOTHI]], :got_lo12:get_func]
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}
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