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c802973c73
All TLS access on Darwin is in the "general dynamic" form where we call a function to resolve the address, so implementation is pretty simple. llvm-svn: 368418
20 lines
684 B
LLVM
20 lines
684 B
LLVM
; RUN: llc -mtriple=arm64-apple-ios7.0 %s -o - | FileCheck %s
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; RUN: llc -mtriple=arm64-apple-ios7.0 -global-isel -global-isel-abort=1 -verify-machineinstrs %s -o - | FileCheck %s
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@var = thread_local global i8 0
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; N.b. x0 must be the result of the first load (i.e. the address of the
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; descriptor) when tlv_get_addr is called. Likewise the result is returned in
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; x0.
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define i8 @get_var() {
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; CHECK-LABEL: get_var:
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; CHECK: adrp x[[TLVPDESC_SLOT_HI:[0-9]+]], _var@TLVPPAGE
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; CHECK: ldr x0, [x[[TLVPDESC_SLOT_HI]], _var@TLVPPAGEOFF]
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; CHECK: ldr [[TLV_GET_ADDR:x[0-9]+]], [x0]
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; CHECK: blr [[TLV_GET_ADDR]]
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; CHECK: ldrb w0, [x0]
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%val = load i8, i8* @var, align 1
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ret i8 %val
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}
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