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1; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -o - %s | FileCheck %s2; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=static -o - < %s | FileCheck %s3; RUN: llc -mtriple=aarch64-none-linux-gnu -code-model=large -o - %s | FileCheck --check-prefix=CHECK-LARGE %s4; RUN: llc -mtriple=aarch64-none-elf -code-model=tiny -o - %s | FileCheck --check-prefix=CHECK-TINY %s5 6declare extern_weak dso_local i32 @var()7 8define ptr @foo() {9; The usual ADRP/ADD pair can't be used for a weak reference because it must10; evaluate to 0 if the symbol is undefined. We use a GOT entry for PIC11; otherwise a litpool entry.12 ret ptr @var13 14; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:var15; CHECK-NEXT: ldr x0, [x[[ADDRHI]], :got_lo12:var]16 17 ; In the large model, the usual relocations are absolute and can18 ; materialise 0.19; CHECK-LARGE: movz x0, #:abs_g0_nc:var20; CHECK-LARGE-NEXT: movk x0, #:abs_g1_nc:var21; CHECK-LARGE-NEXT: movk x0, #:abs_g2_nc:var22; CHECK-LARGE-NEXT: movk x0, #:abs_g3:var23 24 ; In the tiny codemodel we us a got relocated LDR.25; CHECK-TINY: ldr x0, :got:var26}27 28 29@arr_var = extern_weak global [10 x i32]30 31define ptr @bar() {32 %addr = getelementptr [10 x i32], ptr @arr_var, i32 0, i32 533 34; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:arr_var35; CHECK-NEXT: ldr [[BASE:x[0-9]+]], [x[[ADDRHI]], :got_lo12:arr_var]36; CHECK-NEXT: add x0, [[BASE]], #2037 38 ret ptr %addr39 40 ; Note, In the large model, if dso_local, the relocations are absolute and can materialise 0.41; CHECK-LARGE: adrp x[[ADDR:[0-9]+]], :got:arr_var42; CHECK-LARGE-NEXT: ldr x[[ADDR]], [x[[ADDR]], :got_lo12:arr_var]43; CHECK-LARGE-NEXT: add x0, x[[ADDR]], #2044 45; CHECK-TINY: ldr [[BASE:x[0-9]+]], :got:arr_var46; CHECK-TINY-NEXT: add x0, [[BASE]], #2047}48 49@defined_weak_var = internal unnamed_addr global i32 050 51define ptr @wibble() {52 ret ptr @defined_weak_var53 54; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var55; CHECK-NEXT: add x0, [[BASE]], :lo12:defined_weak_var56 57; CHECK-LARGE: movz x0, #:abs_g0_nc:defined_weak_var58; CHECK-LARGE-NEXT: movk x0, #:abs_g1_nc:defined_weak_var59; CHECK-LARGE-NEXT: movk x0, #:abs_g2_nc:defined_weak_var60; CHECK-LARGE-NEXT: movk x0, #:abs_g3:defined_weak_var61 62; CHECK-TINY: adr x0, defined_weak_var63}64