1; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -o - %s | FileCheck %s 2; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=static -o - < %s | FileCheck %s 3; RUN: llc -mtriple=aarch64-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 14; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:var 15; CHECK: ldr x0, [x[[ADDRHI]], :got_lo12:var] 16 17 ; In the large model, the usual relocations are absolute and can 18 ; materialise 0. 19; CHECK-LARGE: movz x0, #:abs_g0_nc:var 20; CHECK-LARGE: movk x0, #:abs_g1_nc:var 21; CHECK-LARGE: movk x0, #:abs_g2_nc:var 22; CHECK-LARGE: movk x0, #:abs_g3:var 23} 24 25 26@arr_var = extern_weak global [10 x i32] 27 28define i32* @bar() { 29 %addr = getelementptr [10 x i32], [10 x i32]* @arr_var, i32 0, i32 5 30 31 32; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:arr_var 33; CHECK: ldr [[BASE:x[0-9]+]], [x[[ADDRHI]], :got_lo12:arr_var] 34; CHECK: add x0, [[BASE]], #20 35 36 ret i32* %addr 37 38 ; In the large model, the usual relocations are absolute and can 39 ; materialise 0. 40; CHECK-LARGE: movz [[ADDR:x[0-9]+]], #:abs_g0_nc:arr_var 41; CHECK-LARGE: movk [[ADDR]], #:abs_g1_nc:arr_var 42; CHECK-LARGE: movk [[ADDR]], #:abs_g2_nc:arr_var 43; CHECK-LARGE: movk [[ADDR]], #:abs_g3:arr_var 44} 45 46@defined_weak_var = internal unnamed_addr global i32 0 47 48define i32* @wibble() { 49 ret i32* @defined_weak_var 50 51; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var 52; CHECK: add x0, [[BASE]], :lo12:defined_weak_var 53 54; CHECK-LARGE: movz x0, #:abs_g0_nc:defined_weak_var 55; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var 56; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var 57; CHECK-LARGE: movk x0, #:abs_g3:defined_weak_var 58} 59