forked from Imagelibrary/binutils-gdb
9b383903e7
Slim LLVM IR object is a standalone file whose first 4 bytes are 'B',
'C', 0xc0, 0xde. GCC IR object is regular ELF object with sections
whose names start with .gnu.lto_.* or .gnu.debuglto_.*. GCC IR object
uses a .gnu.lto_.lto.<some_hash> section to encode the LTO bytecode
information:
struct lto_section
{
int16_t major_version;
int16_t minor_version;
unsigned char slim_object;
/* Flags is a private field that is not defined publicly. */
uint16_t flags;
};
In slim GCC IR object, the slim_object field is non-zero. Strip should
treat slim GCC/LLVM IR objects the same. Since strip won't change slim
LLVM IR objects, it should leave slim GCC IR object unchanged even when
asked to remove all IR objects:
1. Set the lto_type field to lto_slim_ir_object for slim LLVM IR object.
2. Always copy slim IR object as unknown object.
bfd/
PR binutils/33271
* format.c (bfd_set_lto_type): Set the lto_type field to
lto_slim_ir_object for slim LLVM IR object.
binutils/
PR binutils/33271
* objcopy.c (lto_sections_removed): Removed.
(copy_archive): Always copy slim IR object as unknown object.
(copy_file): Likewise.
(strip_main): Updated.
ld/
PR binutils/33271
* testsuite/ld-plugin/lto-binutils.exp: Don't check if fat IR is
available when running slim IR tests.
* testsuite/ld-plugin/strip-1a-s-all.nd: Expect full symbol list.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>