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1 # REQUIRES: x86
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2 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
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3 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/symbol-ordering-file-warnings1.s -o %t2.o
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4 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/symbol-ordering-file-warnings2.s -o %t3.o
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5 # RUN: ld.lld -shared %t2.o -o %t.so
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6
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7 # Check that a warning is emitted for entries in the file that are not present in any used input.
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8 # RUN: echo "missing" > %t-order-missing.txt
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9 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-missing.txt \
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10 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,MISSING
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11
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12 # Check that the warning can be disabled.
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13 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-missing.txt \
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14 # RUN: --unresolved-symbols=ignore-all --no-warn-symbol-ordering 2>&1 | \
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15 # RUN: FileCheck %s --check-prefixes=WARN --allow-empty
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16
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17 # Check that the warning can be re-enabled
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18 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-missing.txt \
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19 # RUN: --unresolved-symbols=ignore-all --no-warn-symbol-ordering --warn-symbol-ordering 2>&1 | \
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20 # RUN: FileCheck %s --check-prefixes=WARN,MISSING
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21
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22 # Check that a warning is emitted for imported shared symbols.
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23 # RUN: echo "shared" > %t-order-shared.txt
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24 # RUN: ld.lld %t1.o %t.so -o %t --symbol-ordering-file %t-order-shared.txt \
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25 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,SHARED
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26
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27 # Check that a warning is emitted for absolute symbols.
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28 # RUN: echo "absolute" > %t-order-absolute.txt
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29 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-absolute.txt \
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30 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,ABSOLUTE
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31
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32 # Check that a warning is emitted for symbols discarded due to --gc-sections.
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33 # RUN: echo "gc" > %t-order-gc.txt
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34 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-gc.txt --gc-sections \
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35 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,GC
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36
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37 # Check that a warning is not emitted for the symbol removed due to --icf.
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38 # RUN: echo "icf1" > %t-order-icf.txt
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39 # RUN: echo "icf2" >> %t-order-icf.txt
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40 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-icf.txt --icf=all \
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41 # RUN: --unresolved-symbols=ignore-all --fatal-warnings
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42
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43 # RUN: echo "_GLOBAL_OFFSET_TABLE_" > %t-order-synthetic.txt
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44 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-synthetic.txt --icf=all \
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45 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,SYNTHETIC
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46
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47 # Check that a warning is emitted for symbols discarded due to a linker script /DISCARD/ section.
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48 # RUN: echo "discard" > %t-order-discard.txt
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49 # RUN: echo "SECTIONS { /DISCARD/ : { *(.text.discard) } }" > %t.script
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50 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-discard.txt -T %t.script \
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51 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,DISCARD
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52
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53 # Check that LLD does not warn for discarded COMDAT symbols, if they are present in the kept instance.
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54 # RUN: echo "comdat" > %t-order-comdat.txt
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55 # RUN: ld.lld %t1.o %t2.o -o %t --symbol-ordering-file %t-order-comdat.txt \
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56 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN --allow-empty
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57
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58 # Check that if a COMDAT was unused and discarded via --gc-sections, warn for each instance.
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59 # RUN: ld.lld %t1.o %t2.o -o %t --symbol-ordering-file %t-order-comdat.txt --gc-sections \
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60 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,COMDAT
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61
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62 # Check that if a weak symbol is not kept, because of an equivalent global symbol, no warning is emitted.
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63 # RUN: echo "glob_or_wk" > %t-order-weak.txt
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64 # RUN: ld.lld %t1.o %t2.o -o %t --symbol-ordering-file %t-order-weak.txt \
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65 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN --allow-empty
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66
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67 # Check that symbols only in unused archive members result in a warning.
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68 # RUN: rm -f %t.a
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69 # RUN: llvm-ar rc %t.a %t3.o
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70 # RUN: ld.lld %t1.o %t.a -o %t --symbol-ordering-file %t-order-missing.txt \
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71 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,MISSING --allow-empty
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72
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73 # Check that a warning for each same-named symbol with an issue.
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74 # RUN: echo "multi" > %t-order-same-name.txt
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75 # RUN: ld.lld %t1.o %t2.o %t3.o -o %t --symbol-ordering-file %t-order-same-name.txt \
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76 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,MULTI
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77
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78 # Check that a warning is emitted if the same symbol is mentioned multiple times in the ordering file.
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79 # RUN: echo "_start" > %t-order-multiple-same.txt
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80 # RUN: echo "_start" >> %t-order-multiple-same.txt
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81 # RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-multiple-same.txt \
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82 # RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,SAMESYM
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83
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84 # Check that all warnings can be emitted from the same input.
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85 # RUN: echo "missing_sym" > %t-order-multi.txt
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86 # RUN: echo "undefined" >> %t-order-multi.txt
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87 # RUN: echo "_start" >> %t-order-multi.txt
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88 # RUN: echo "shared" >> %t-order-multi.txt
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89 # RUN: echo "absolute" >> %t-order-multi.txt
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90 # RUN: echo "gc" >> %t-order-multi.txt
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91 # RUN: echo "discard" >> %t-order-multi.txt
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92 # RUN: echo "_GLOBAL_OFFSET_TABLE_" >> %t-order-multi.txt
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93 # RUN: echo "_start" >> %t-order-multi.txt
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94 # RUN: ld.lld %t1.o %t3.o %t.so -o %t --symbol-ordering-file %t-order-multi.txt --gc-sections -T %t.script \
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95 # RUN: 2>&1 | FileCheck %s --check-prefixes=WARN,SAMESYM,ABSOLUTE,SHARED,UNDEFINED,GC,DISCARD,MISSING2,SYNTHETIC
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96
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97 # WARN-NOT: warning:
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98 # SAMESYM: warning: {{.*}}.txt: duplicate ordered symbol: _start
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99 # WARN-NOT: warning:
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100 # SYNTHETIC: warning: <internal>: unable to order synthetic symbol: _GLOBAL_OFFSET_TABLE_
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101 # WARN-NOT: warning:
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102 # DISCARD: warning: {{.*}}1.o: unable to order discarded symbol: discard
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103 # WARN-NOT: warning:
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104 # GC: warning: {{.*}}1.o: unable to order discarded symbol: gc
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105 # WARN-NOT: warning:
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106 # SHARED: warning: {{.*}}.so: unable to order shared symbol: shared
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107 # WARN-NOT: warning:
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108 # UNDEFINED: warning: {{.*}}3.o: unable to order undefined symbol: undefined
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109 # WARN-NOT: warning:
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110 # ABSOLUTE: warning: {{.*}}1.o: unable to order absolute symbol: absolute
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111 # WARN-NOT: warning:
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112 # MISSING: warning: symbol ordering file: no such symbol: missing
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113 # WARN-NOT: warning:
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114 # MISSING2: warning: symbol ordering file: no such symbol: missing_sym
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115 # WARN-NOT: warning:
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116 # COMDAT: warning: {{.*}}1.o: unable to order discarded symbol: comdat
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117 # WARN-NOT: warning:
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118 # MULTI: warning: {{.*}}2.o: unable to order absolute symbol: multi
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119 # WARN-NOT: warning:
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120
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121 absolute = 0x1234
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122
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123 .section .text.gc,"ax",@progbits
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124 .global gc
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125 gc:
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126 nop
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127
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128 .section .text.discard,"ax",@progbits
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129 .global discard
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130 discard:
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131 nop
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132
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133 .section .text.comdat,"axG",@progbits,comdat,comdat
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134 .weak comdat
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135 comdat:
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136 nop
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137
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138 .section .text.glob_or_wk,"ax",@progbits
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139 .weak glob_or_wk
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140 glob_or_wk:
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141 nop
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142
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143 .section .text._start,"ax",@progbits
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144 .global _start
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145 _start:
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146 movq %rax, absolute
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147 callq shared
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148
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149 .section .text.icf1,"ax",@progbits
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150 .global icf1
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151 icf1:
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152 ret
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153
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154 .section .text.icf2,"ax",@progbits
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155 .global icf2
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156 icf2:
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157 ret
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158
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159 # This is a "good" instance of the symbol
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160 .section .text.multi,"ax",@progbits
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161 multi:
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162 .quad _GLOBAL_OFFSET_TABLE_
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