1; RUN: llc -mtriple=arm64-none-linux-gnu -relocation-model=pic -o - < %s | FileCheck %s 2; RUN: llc -mtriple=arm64-none-linux-gnu -relocation-model=static -o - < %s | FileCheck %s 3; RUN: llc -mtriple=arm64-none-linux-gnu -code-model=large -o - < %s | FileCheck --check-prefix=CHECK-LARGE %s 4 5declare extern_weak i32 @var() 6 7define i32()* @foo() { 8; The usual ADRP/ADD pair can't be used for a weak reference because it must 9; evaluate to 0 if the symbol is undefined. We use a GOT entry for PIC 10; otherwise a litpool entry. 11 ret i32()* @var 12 13; CHECK: adrp x[[VAR:[0-9]+]], :got:var 14; CHECK: ldr x0, [x[[VAR]], :got_lo12:var] 15 16 ; In the large model, the usual relocations are absolute and can 17 ; materialise 0. 18; CHECK-LARGE: movz x0, #:abs_g0_nc:var 19; CHECK-LARGE: movk x0, #:abs_g1_nc:var 20; CHECK-LARGE: movk x0, #:abs_g2_nc:var 21; CHECK-LARGE: movk x0, #:abs_g3:var 22} 23 24 25@arr_var = extern_weak global [10 x i32] 26 27define i32* @bar() { 28 %addr = getelementptr [10 x i32], [10 x i32]* @arr_var, i32 0, i32 5 29; CHECK: adrp x[[ARR_VAR_HI:[0-9]+]], :got:arr_var 30; CHECK: ldr [[ARR_VAR:x[0-9]+]], [x[[ARR_VAR_HI]], :got_lo12:arr_var] 31; CHECK: add x0, [[ARR_VAR]], #20 32 ret i32* %addr 33 34 ; In the large model, the usual relocations are absolute and can 35 ; materialise 0. 36; CHECK-LARGE: movz [[ARR_VAR:x[0-9]+]], #:abs_g0_nc:arr_var 37; CHECK-LARGE: movk [[ARR_VAR]], #:abs_g1_nc:arr_var 38; CHECK-LARGE: movk [[ARR_VAR]], #:abs_g2_nc:arr_var 39; CHECK-LARGE: movk [[ARR_VAR]], #:abs_g3:arr_var 40} 41 42@defined_weak_var = internal unnamed_addr global i32 0 43 44define i32* @wibble() { 45 ret i32* @defined_weak_var 46; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var 47; CHECK: add x0, [[BASE]], :lo12:defined_weak_var 48 49; CHECK-LARGE: movz x0, #:abs_g0_nc:defined_weak_var 50; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var 51; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var 52; CHECK-LARGE: movk x0, #:abs_g3:defined_weak_var 53} 54