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[MinGW] Implement the GNU ld options -S/--strip-debug 

In this mode, we retain the symbol table, but skip the actual debug
information.

Differential Revision: https://reviews.llvm.org/D48745

llvm-svn: 335947
This commit is contained in:
Martin Storsjo 2018-06-29 06:08:31 +00:00
parent 3a7905b2aa
commit c0826745cf
3 changed files with 10 additions and 0 deletions
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2
lld/MinGW/Driver.cpp
View File

@ -149,6 +149,8 @@ bool mingw::link(ArrayRef<const char *> ArgsArr, raw_ostream &Diag) {
if (auto *A = Args.getLastArg(OPT_pdb)) {
Add("-debug");
Add("-pdb:" + StringRef(A->getValue()));
} else if (Args.hasArg(OPT_strip_debug)) {
Add("-debug:symtab");
} else if (!Args.hasArg(OPT_strip_all)) {
Add("-debug:dwarf");
}

3
lld/MinGW/Options.td
View File

@ -35,6 +35,8 @@ def subs: S<"subsystem">, HelpText<"Specify subsystem">;
def stack: S<"stack">;
def strip_all: F<"strip-all">,
HelpText<"Omit all symbol information from the output binary">;
def strip_debug: F<"strip-debug">,
HelpText<"Omit all debug information, but keep symbol information">;
def whole_archive: F<"whole-archive">,
HelpText<"Include all object files for following archives">;
def verbose: F<"verbose">, HelpText<"Verbose mode">;
@ -72,3 +74,4 @@ def version: F<"version">, HelpText<"Display the version number and exit">;
// Alias
def alias_entry_e: JoinedOrSeparate<["-"], "e">, Alias<entry>;
def alias_strip_s: Flag<["-"], "s">, Alias<strip_all>;
def alias_strip_S: Flag<["-"], "S">, Alias<strip_debug>;

5
lld/test/MinGW/driver.test
View File

@ -90,6 +90,11 @@ RUN: ld.lld -### -m i386pep foo.o -s | FileCheck -check-prefix STRIP %s
RUN: ld.lld -### -m i386pep foo.o --strip-all | FileCheck -check-prefix STRIP %s
STRIP-NOT: -debug:dwarf
RUN: ld.lld -### -m i386pep foo.o -S | FileCheck -check-prefix STRIP-DEBUG %s
RUN: ld.lld -### -m i386pep foo.o --strip-debug | FileCheck -check-prefix STRIP-DEBUG %s
STRIP-DEBUG: -debug:symtab
STRIP-DEBUG-NOT: -debug:dwarf
RUN: ld.lld -### -m i386pep foo.o -pdb out.pdb | FileCheck -check-prefix PDB %s
PDB: -debug -pdb:out.pdb
PDB-NOT: -debug:dwarf