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llvm-project/lld/test/ELF/as-needed.s

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ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %s -o %t.o
// RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %p/Inputs/shared.s -o %t2.o
// RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %p/Inputs/shared2.s -o %t3.o
// RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %p/Inputs/shared3.s -o %t4.o
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld -shared %t2.o -soname shared1 -o %t2.so
// RUN: ld.lld -shared %t3.o -soname shared2 -o %t3.so
// RUN: ld.lld -shared %t4.o -soname shared3 -o %t4.so
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
/// Check if --as-needed actually works.
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld %t.o %t2.so %t3.so %t4.so -o %t2
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
// RUN: llvm-readobj -dynamic-table %t2 | FileCheck %s
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld --as-needed %t.o %t2.so %t3.so %t4.so -o %t2
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
// RUN: llvm-readobj -dynamic-table %t2 | FileCheck -check-prefix=CHECK2 %s
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld --as-needed %t.o %t2.so --no-as-needed %t3.so %t4.so -o %t2
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
// RUN: llvm-readobj -dynamic-table %t2 | FileCheck %s
/// GROUP directive is the same as --as-needed.
ELF: Rewrite "echo" command arguments in hope that would fix a test breakage. Previously, we used both single quotes and double quotes, and some single-quoted tokens are concatenated with next tokens because there were no spaces between them. That may be a cause of test flakiness on Windows, which is reported as https://llvm.org/bugs/show_bug.cgi?id=26388. The new test commands are more straightforward than before. llvm-svn: 259559
2016-02-03 05:03:56 +08:00
// RUN: echo "GROUP(\"%t2.so\" \"%t3.so\" \"%t4.so\")" > %t.script
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld %t.o %t.script -o %t2
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
// RUN: llvm-readobj -dynamic-table %t2 | FileCheck %s
ELF: Rewrite "echo" command arguments in hope that would fix a test breakage. Previously, we used both single quotes and double quotes, and some single-quoted tokens are concatenated with next tokens because there were no spaces between them. That may be a cause of test flakiness on Windows, which is reported as https://llvm.org/bugs/show_bug.cgi?id=26388. The new test commands are more straightforward than before. llvm-svn: 259559
2016-02-03 05:03:56 +08:00
// RUN: echo "GROUP(AS_NEEDED(\"%t2.so\" \"%t3.so\" \"%t4.so\"))" > %t.script
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
// RUN: ld.lld %t.o %t.script -o %t2
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
// RUN: llvm-readobj -dynamic-table %t2 | FileCheck -check-prefix=CHECK2 %s
// CHECK: NEEDED SharedLibrary (shared1)
// CHECK: NEEDED SharedLibrary (shared2)
// CHECK: NEEDED SharedLibrary (shared3)
// CHECK2: NEEDED SharedLibrary (shared1)
// CHECK2-NOT: NEEDED SharedLibrary (shared2)
// CHECK2-NOT: NEEDED SharedLibrary (shared3)
.global _start
_start:
Don't depend on lld creating relocations in ro segments. We currently don't do a good job of diagnosing inputs that would require dynamic relocations to be applied to read only segments. I am about to improve lld in that area, but unfortunately we developed tests that depend on the current behavior. To make clear what is actually changing, this first patch just updates tests to not depend on the current behavior. In most cases this just means using a rw section instead of a ro one, but that unfortunately changes many addresses. llvm-svn: 268145
2016-04-30 08:49:10 +08:00
.data
ELF2: Implement --as-needed. This patch adds AsNeeded and IsUsed bool fields to SharedFile. AsNeeded bit is set if the DSO is enclosed with --as-needed and --no-as-needed. IsUsed bit is off by default. When we adds a symbol to the symbol table for dynamic linking, we set its SharedFile's IsUsed bit. If AsNeeded is set but IsUsed is not set, we don't want to write that file's SO name to DT_NEEDED field. http://reviews.llvm.org/D13579 llvm-svn: 249998
2015-10-12 04:59:12 +08:00
.long bar
.long zed
.weak baz
ELF2: Verify that weak undefined symbols won't add DT_NEEDED. In order to actually verify the condition, we have to use a weak symbol. If an undefined symbol is not used at all, it is naturally ignored not by the code for --as-needed but by the code for something else. llvm-svn: 250062
2015-10-13 00:25:33 +08:00
call baz