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[LLD] [MinGW] Implement the --lto-emit-asm and -plugin-opt=emit-llvm options #81475

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Merged
merged 1 commit into from
Feb 13, 2024
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[LLD] [MinGW] Implement the --lto-emit-asm and -plugin-opt=emit-llvm options #81475

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4 changes: 4 additions & 0 deletions lld/MinGW/Driver.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -451,6 +451,10 @@ bool link(ArrayRef<const char *> argsArr, llvm::raw_ostream &stdoutOS,
add("-lto-cs-profile-generate");
if (auto *arg = args.getLastArg(OPT_lto_cs_profile_file))
add("-lto-cs-profile-file:" + StringRef(arg->getValue()));
if (args.hasArg(OPT_plugin_opt_emit_llvm))
add("-lldemit:llvm");
if (args.hasArg(OPT_lto_emit_asm))
add("-lldemit:asm");

if (auto *a = args.getLastArg(OPT_thinlto_cache_dir))
add("-lldltocache:" + StringRef(a->getValue()));
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5 changes: 5 additions & 0 deletions lld/MinGW/Options.td
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Expand Up @@ -158,6 +158,8 @@ def lto_cs_profile_generate: FF<"lto-cs-profile-generate">,
HelpText<"Perform context sensitive PGO instrumentation">;
def lto_cs_profile_file: JJ<"lto-cs-profile-file=">,
HelpText<"Context sensitive profile file path">;
def lto_emit_asm: FF<"lto-emit-asm">,
HelpText<"Emit assembly code">;

def thinlto_cache_dir: JJ<"thinlto-cache-dir=">,
HelpText<"Path to ThinLTO cached object file directory">;
Expand All @@ -181,6 +183,9 @@ def: J<"plugin-opt=cs-profile-path=">,
Alias<lto_cs_profile_file>, HelpText<"Alias for --lto-cs-profile-file">;
def plugin_opt_dwo_dir_eq: J<"plugin-opt=dwo_dir=">,
HelpText<"Directory to store .dwo files when LTO and debug fission are used">;
def plugin_opt_emit_asm: F<"plugin-opt=emit-asm">,
Alias<lto_emit_asm>, HelpText<"Alias for --lto-emit-asm">;
def plugin_opt_emit_llvm: F<"plugin-opt=emit-llvm">;
def: J<"plugin-opt=jobs=">, Alias<thinlto_jobs_eq>, HelpText<"Alias for --thinlto-jobs=">;
def plugin_opt_mcpu_eq: J<"plugin-opt=mcpu=">;

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7 changes: 7 additions & 0 deletions lld/test/MinGW/driver.test
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Expand Up @@ -415,6 +415,13 @@ LTO_OPTS: -mllvm:-mcpu=x86-64 -opt:lldlto=2 -dwodir:foo -lto-cs-profile-generate
RUN: ld.lld -### foo.o -m i386pep --lto-O2 --lto-CGO1 --lto-cs-profile-generate --lto-cs-profile-file=foo 2>&1 | FileCheck -check-prefix=LTO_OPTS2 %s
LTO_OPTS2:-opt:lldlto=2 -opt:lldltocgo=1 -lto-cs-profile-generate -lto-cs-profile-file:foo

RUN: ld.lld -### foo.o -m i386pe -plugin-opt=emit-asm 2>&1 | FileCheck -check-prefix=LTO_EMIT_ASM %s
RUN: ld.lld -### foo.o -m i386pe --lto-emit-asm 2>&1 | FileCheck -check-prefix=LTO_EMIT_ASM %s
LTO_EMIT_ASM: -lldemit:asm

RUN: ld.lld -### foo.o -m i386pe -plugin-opt=emit-llvm 2>&1 | FileCheck -check-prefix=LTO_EMIT_LLVM %s
LTO_EMIT_LLVM: -lldemit:llvm

Test GCC specific LTO options that GCC passes unconditionally, that we ignore.

RUN: ld.lld -### foo.o -m i386pep -plugin /usr/lib/gcc/x86_64-w64-mingw32/10-posix/liblto_plugin.so -plugin-opt=/usr/lib/gcc/x86_64-w64-mingw32/10-posix/lto-wrapper -plugin-opt=-fresolution=/tmp/ccM9d4fP.res -plugin-opt=-pass-through=-lmingw32 2> /dev/null
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