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[MinGW] Add an lld specific option for requesting to delay load libraries 

With GNU tools, delayload is handled completely differently. (One
creates a specific delayload import library using dlltool and then
links against it instead of the normal import library.)

Instead of requiring using -Xlink=-delayload:lib.dll, we can provide
an lld specific option for this.

Differential Revision: https://reviews.llvm.org/D65728

llvm-svn: 367837
This commit is contained in:
Martin Storsjo 2019-08-05 11:57:06 +00:00
parent a0cbe16ed5
commit c92b3563c6
3 changed files with 8 additions and 0 deletions
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2
lld/MinGW/Driver.cpp
View File

@ -303,6 +303,8 @@ bool mingw::link(ArrayRef<const char *> argsArr, raw_ostream &diag) {
add("-include:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_undefined))
add("-includeoptional:" + StringRef(a->getValue()));
for (auto *a : args.filtered(OPT_delayload))
add("-delayload:" + StringRef(a->getValue()));
std::vector<StringRef> searchPaths;
for (auto *a : args.filtered(OPT_L)) {

2
lld/MinGW/Options.td
View File

@ -80,6 +80,8 @@ def require_defined_eq: J<"require-defined=">, Alias<require_defined>;
def _HASH_HASH_HASH : Flag<["-"], "###">,
HelpText<"Print (but do not run) the commands to run for this compilation">;
def appcontainer: F<"appcontainer">, HelpText<"Set the appcontainer flag in the executable">;
def delayload: S<"delayload">, HelpText<"DLL to load only on demand">;
def delayload_eq: J<"delayload=">, Alias<delayload>;
def mllvm: S<"mllvm">;
def pdb: S<"pdb">, HelpText<"Output PDB debug info file, chosen implicitly if the argument is empty">;
def pdb_eq: J<"pdb=">, Alias<pdb>;

4
lld/test/MinGW/driver.test
View File

@ -200,3 +200,7 @@ APPCONTAINER: -appcontainer
# RUN: ld.lld -m i386pep --help 2>&1 | FileCheck -check-prefix=HELP %s
# HELP: USAGE:
# HELP: --enable-auto-import
RUN: ld.lld -### -m i386pep foo.o -delayload user32.dll --delayload shell32.dll | FileCheck -check-prefix DELAYLOAD %s
RUN: ld.lld -### -m i386pep foo.o -delayload=user32.dll --delayload=shell32.dll | FileCheck -check-prefix DELAYLOAD %s
DELAYLOAD: -delayload:user32.dll -delayload:shell32.dll