1# REQUIRES: x86 2# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o 3# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/symbol-ordering-file-warnings1.s -o %t2.o 4# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/symbol-ordering-file-warnings2.s -o %t3.o 5# RUN: ld.lld -shared %t2.o -o %t.so 6 7# Check that a warning is emitted for entries in the file that are not present in any used input. 8# RUN: echo "missing" > %t-order-missing.txt 9# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-missing.txt \ 10# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,MISSING 11 12# Check that the warning can be disabled. 13# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-missing.txt \ 14# RUN: --unresolved-symbols=ignore-all --no-warn-symbol-ordering 2>&1 | \ 15# RUN: FileCheck %s --check-prefixes=WARN --allow-empty 16 17# Check that the warning can be re-enabled 18# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-missing.txt \ 19# RUN: --unresolved-symbols=ignore-all --no-warn-symbol-ordering --warn-symbol-ordering 2>&1 | \ 20# RUN: FileCheck %s --check-prefixes=WARN,MISSING 21 22# Check that a warning is emitted for imported shared symbols. 23# RUN: echo "shared" > %t-order-shared.txt 24# RUN: ld.lld %t1.o %t.so -o %t --symbol-ordering-file %t-order-shared.txt \ 25# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,SHARED 26 27# Check that a warning is emitted for absolute symbols. 28# RUN: echo "absolute" > %t-order-absolute.txt 29# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-absolute.txt \ 30# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,ABSOLUTE 31 32# Check that a warning is emitted for symbols discarded due to --gc-sections. 33# RUN: echo "gc" > %t-order-gc.txt 34# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-gc.txt --gc-sections \ 35# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,GC 36 37# Check that a warning is not emitted for the symbol removed due to --icf. 38# RUN: echo "icf1" > %t-order-icf.txt 39# RUN: echo "icf2" >> %t-order-icf.txt 40# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-icf.txt --icf=all \ 41# RUN: --unresolved-symbols=ignore-all --fatal-warnings 42 43# RUN: echo "_GLOBAL_OFFSET_TABLE_" > %t-order-synthetic.txt 44# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-synthetic.txt --icf=all \ 45# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,SYNTHETIC 46 47# Check that a warning is emitted for symbols discarded due to a linker script /DISCARD/ section. 48# RUN: echo "discard" > %t-order-discard.txt 49# RUN: echo "SECTIONS { /DISCARD/ : { *(.text.discard) } }" > %t.script 50# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-discard.txt -T %t.script \ 51# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,DISCARD 52 53# Check that LLD does not warn for discarded COMDAT symbols, if they are present in the kept instance. 54# RUN: echo "comdat" > %t-order-comdat.txt 55# RUN: ld.lld %t1.o %t2.o -o %t --symbol-ordering-file %t-order-comdat.txt \ 56# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN --allow-empty 57 58# Check that if a COMDAT was unused and discarded via --gc-sections, warn for each instance. 59# RUN: ld.lld %t1.o %t2.o -o %t --symbol-ordering-file %t-order-comdat.txt --gc-sections \ 60# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,COMDAT 61 62# Check that if a weak symbol is not kept, because of an equivalent global symbol, no warning is emitted. 63# RUN: echo "glob_or_wk" > %t-order-weak.txt 64# RUN: ld.lld %t1.o %t2.o -o %t --symbol-ordering-file %t-order-weak.txt \ 65# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN --allow-empty 66 67# Check that symbols only in unused archive members result in a warning. 68# RUN: rm -f %t.a 69# RUN: llvm-ar rc %t.a %t3.o 70# RUN: ld.lld %t1.o %t.a -o %t --symbol-ordering-file %t-order-missing.txt \ 71# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,MISSING --allow-empty 72 73# Check that a warning for each same-named symbol with an issue. 74# RUN: echo "multi" > %t-order-same-name.txt 75# RUN: ld.lld %t1.o %t2.o %t3.o -o %t --symbol-ordering-file %t-order-same-name.txt \ 76# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,MULTI 77 78# Check that a warning is emitted if the same symbol is mentioned multiple times in the ordering file. 79# RUN: echo "_start" > %t-order-multiple-same.txt 80# RUN: echo "_start" >> %t-order-multiple-same.txt 81# RUN: ld.lld %t1.o -o %t --symbol-ordering-file %t-order-multiple-same.txt \ 82# RUN: --unresolved-symbols=ignore-all 2>&1 | FileCheck %s --check-prefixes=WARN,SAMESYM 83 84# Check that all warnings can be emitted from the same input. 85# RUN: echo "missing_sym" > %t-order-multi.txt 86# RUN: echo "undefined" >> %t-order-multi.txt 87# RUN: echo "_start" >> %t-order-multi.txt 88# RUN: echo "shared" >> %t-order-multi.txt 89# RUN: echo "absolute" >> %t-order-multi.txt 90# RUN: echo "gc" >> %t-order-multi.txt 91# RUN: echo "discard" >> %t-order-multi.txt 92# RUN: echo "_GLOBAL_OFFSET_TABLE_" >> %t-order-multi.txt 93# RUN: echo "_start" >> %t-order-multi.txt 94# RUN: ld.lld %t1.o %t3.o %t.so -o %t --symbol-ordering-file %t-order-multi.txt --gc-sections -T %t.script \ 95# RUN: 2>&1 | FileCheck %s --check-prefixes=WARN,SAMESYM,ABSOLUTE,SHARED,UNDEFINED,GC,DISCARD,MISSING2,SYNTHETIC 96 97# WARN-NOT: warning: 98# SAMESYM: warning: {{.*}}.txt: duplicate ordered symbol: _start 99# WARN-NOT: warning: 100# SHARED: warning: {{.*}}.so: unable to order shared symbol: shared 101# WARN-NOT: warning: 102# DISCARD: warning: {{.*}}1.o: unable to order discarded symbol: discard 103# WARN-NOT: warning: 104# GC: warning: {{.*}}1.o: unable to order discarded symbol: gc 105# WARN-NOT: warning: 106# SYNTHETIC: warning: <internal>: unable to order synthetic symbol: _GLOBAL_OFFSET_TABLE_ 107# WARN-NOT: warning: 108# UNDEFINED: warning: {{.*}}3.o: unable to order undefined symbol: undefined 109# WARN-NOT: warning: 110# ABSOLUTE: warning: {{.*}}1.o: unable to order absolute symbol: absolute 111# WARN-NOT: warning: 112# MISSING: warning: symbol ordering file: no such symbol: missing 113# WARN-NOT: warning: 114# MISSING2: warning: symbol ordering file: no such symbol: missing_sym 115# WARN-NOT: warning: 116# COMDAT: warning: {{.*}}1.o: unable to order discarded symbol: comdat 117# WARN-NOT: warning: 118# MULTI: warning: {{.*}}2.o: unable to order absolute symbol: multi 119# WARN-NOT: warning: 120 121.section .text._start,"ax",@progbits 122.global _start 123_start: 124 movq %rax, absolute 125 callq shared 126 127absolute = 0x1234 128 129.section .text.comdat,"axG",@progbits,comdat,comdat 130.weak comdat 131comdat: 132 nop 133 134.section .text.discard,"ax",@progbits 135.global discard 136discard: 137 nop 138 139.section .text.gc,"ax",@progbits 140.global gc 141gc: 142 nop 143 144.section .text.glob_or_wk,"ax",@progbits 145.weak glob_or_wk 146glob_or_wk: 147 nop 148 149.section .text.icf1,"ax",@progbits 150.global icf1 151icf1: 152 ret 153 154.section .text.icf2,"ax",@progbits 155.global icf2 156icf2: 157 ret 158 159# This is a "good" instance of the symbol 160.section .text.multi,"ax",@progbits 161multi: 162 .quad _GLOBAL_OFFSET_TABLE_ 163