Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Set PrepareForThinLTO flag when using ThinLTO #50684

Merged
merged 1 commit into from
May 12, 2018
Merged

Set PrepareForThinLTO flag when using ThinLTO #50684

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions src/librustc_llvm/ffi.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1651,6 +1651,7 @@ extern "C" {
MergeFunctions: bool,
SLPVectorize: bool,
LoopVectorize: bool,
PrepareForThinLTO: bool,
PGOGenPath: *const c_char,
PGOUsePath: *const c_char);
pub fn LLVMRustAddLibraryInfo(PM: PassManagerRef,
Expand Down
2 changes: 1 addition & 1 deletion src/librustc_trans/back/lto.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -482,7 +482,7 @@ fn run_pass_manager(cgcx: &CodegenContext,
llvm::CodeGenOptLevel::None => llvm::CodeGenOptLevel::Less,
level => level,
};
with_llvm_pmb(llmod, config, opt_level, &mut |b| {
with_llvm_pmb(llmod, config, opt_level, false, &mut |b| {
if thin {
if !llvm::LLVMRustPassManagerBuilderPopulateThinLTOPassManager(b, pm) {
panic!("this version of LLVM does not support ThinLTO");
Expand Down
5 changes: 4 additions & 1 deletion src/librustc_trans/back/write.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -547,7 +547,8 @@ unsafe fn optimize(cgcx: &CodegenContext,
llvm::LLVMRustAddAnalysisPasses(tm, fpm, llmod);
llvm::LLVMRustAddAnalysisPasses(tm, mpm, llmod);
let opt_level = config.opt_level.unwrap_or(llvm::CodeGenOptLevel::None);
with_llvm_pmb(llmod, &config, opt_level, &mut |b| {
let prepare_for_thin_lto = cgcx.lto == Lto::Thin || cgcx.lto == Lto::ThinLocal;
with_llvm_pmb(llmod, &config, opt_level, prepare_for_thin_lto, &mut |b| {
llvm::LLVMPassManagerBuilderPopulateFunctionPassManager(b, fpm);
llvm::LLVMPassManagerBuilderPopulateModulePassManager(b, mpm);
})
Expand Down Expand Up @@ -2042,6 +2043,7 @@ pub fn run_assembler(cgcx: &CodegenContext, handler: &Handler, assembly: &Path,
pub unsafe fn with_llvm_pmb(llmod: ModuleRef,
config: &ModuleConfig,
opt_level: llvm::CodeGenOptLevel,
prepare_for_thin_lto: bool,
f: &mut FnMut(llvm::PassManagerBuilderRef)) {
use std::ptr;

Expand Down Expand Up @@ -2069,6 +2071,7 @@ pub unsafe fn with_llvm_pmb(llmod: ModuleRef,
config.merge_functions,
config.vectorize_slp,
config.vectorize_loop,
prepare_for_thin_lto,
pgo_gen_path.as_ref().map_or(ptr::null(), |s| s.as_ptr()),
pgo_use_path.as_ref().map_or(ptr::null(), |s| s.as_ptr()),
);
Expand Down
5 changes: 4 additions & 1 deletion src/rustllvm/PassWrapper.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -428,13 +428,16 @@ extern "C" void LLVMRustAddAnalysisPasses(LLVMTargetMachineRef TM,

extern "C" void LLVMRustConfigurePassManagerBuilder(
LLVMPassManagerBuilderRef PMBR, LLVMRustCodeGenOptLevel OptLevel,
bool MergeFunctions, bool SLPVectorize, bool LoopVectorize,
bool MergeFunctions, bool SLPVectorize, bool LoopVectorize, bool PrepareForThinLTO,
const char* PGOGenPath, const char* PGOUsePath) {
// Ignore mergefunc for now as enabling it causes crashes.
// unwrap(PMBR)->MergeFunctions = MergeFunctions;
unwrap(PMBR)->SLPVectorize = SLPVectorize;
unwrap(PMBR)->OptLevel = fromRust(OptLevel);
unwrap(PMBR)->LoopVectorize = LoopVectorize;
#if LLVM_VERSION_GE(4, 0)
unwrap(PMBR)->PrepareForThinLTO = PrepareForThinLTO;
#endif

#ifdef PGO_AVAILABLE
if (PGOGenPath) {
Expand Down