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annotate test/CodeGen/AArch64/extern-weak.ll @ 77:54457678186b

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
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1 ; RUN: llc -mtriple=aarch64-none-linux-gnu -o - %s | FileCheck %s
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2 ; RUN: llc -mtriple=aarch64-none-linux-gnu -code-model=large -o - %s | FileCheck --check-prefix=CHECK-LARGE %s
0
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3
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4 declare extern_weak i32 @var()
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5
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6 define i32()* @foo() {
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7 ; The usual ADRP/ADD pair can't be used for a weak reference because it must
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8 ; evaluate to 0 if the symbol is undefined. We use a litpool entry.
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9 ret i32()* @var
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0
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12 ; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:var
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13 ; CHECK: ldr x0, [x[[ADDRHI]], :got_lo12:var]
0
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15 ; In the large model, the usual relocations are absolute and can
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16 ; materialise 0.
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17 ; CHECK-LARGE: movz x0, #:abs_g3:var
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18 ; CHECK-LARGE: movk x0, #:abs_g2_nc:var
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19 ; CHECK-LARGE: movk x0, #:abs_g1_nc:var
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20 ; CHECK-LARGE: movk x0, #:abs_g0_nc:var
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21 }
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24 @arr_var = extern_weak global [10 x i32]
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25
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26 define i32* @bar() {
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27 %addr = getelementptr [10 x i32]* @arr_var, i32 0, i32 5
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0
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30 ; CHECK: adrp x[[ADDRHI:[0-9]+]], :got:arr_var
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31 ; CHECK: ldr [[BASE:x[0-9]+]], [x[[ADDRHI]], :got_lo12:arr_var]
0
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32 ; CHECK: add x0, [[BASE]], #20
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0
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34 ret i32* %addr
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35
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36 ; In the large model, the usual relocations are absolute and can
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37 ; materialise 0.
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38 ; CHECK-LARGE: movz [[ADDR:x[0-9]+]], #:abs_g3:arr_var
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39 ; CHECK-LARGE: movk [[ADDR]], #:abs_g2_nc:arr_var
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40 ; CHECK-LARGE: movk [[ADDR]], #:abs_g1_nc:arr_var
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41 ; CHECK-LARGE: movk [[ADDR]], #:abs_g0_nc:arr_var
0
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42 }
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44 @defined_weak_var = internal unnamed_addr global i32 0
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45
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46 define i32* @wibble() {
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47 ret i32* @defined_weak_var
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0
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49 ; CHECK: adrp [[BASE:x[0-9]+]], defined_weak_var
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50 ; CHECK: add x0, [[BASE]], :lo12:defined_weak_var
0
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52 ; CHECK-LARGE: movz x0, #:abs_g3:defined_weak_var
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53 ; CHECK-LARGE: movk x0, #:abs_g2_nc:defined_weak_var
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54 ; CHECK-LARGE: movk x0, #:abs_g1_nc:defined_weak_var
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55 ; CHECK-LARGE: movk x0, #:abs_g0_nc:defined_weak_var
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56 }