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[LTO][wasm][NewPM] Allow using new pass manager for wasm LTO 

Reviewed By: sbc100

Differential Revision: https://reviews.llvm.org/D92150
This commit is contained in:
Arthur Eubanks 2020-12-01 12:22:27 -08:00
parent e0665a9050
commit 1314a4938f
5 changed files with 28 additions and 0 deletions
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15
lld/test/wasm/lto/new-pass-manager.ll Normal file
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@ -0,0 +1,15 @@
; RUN: llvm-as -o %t.bc %s
; RUN: wasm-ld --lto-new-pass-manager --lto-debug-pass-manager -o /dev/null %t.bc 2>&1 | FileCheck %s
; RUN: wasm-ld --lto-new-pass-manager --lto-debug-pass-manager --lto-no-new-pass-manager -o /dev/null %t.bc 2>&1 | FileCheck %s --allow-empty --check-prefix=LPM
; CHECK: Starting llvm::Module pass manager run
; CHECK: Finished llvm::Module pass manager run
; LPM-NOT: Starting llvm::Module pass manager run
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
define void @_start() local_unnamed_addr {
entry:
ret void
}

2
lld/wasm/Config.h
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@ -62,6 +62,8 @@ struct Configuration {
unsigned ltoo;
unsigned optimize;
llvm::StringRef thinLTOJobs;
bool ltoNewPassManager;
bool ltoDebugPassManager;
UnresolvedPolicy unresolvedSymbols;
llvm::StringRef entry;

3
lld/wasm/Driver.cpp
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@ -379,6 +379,9 @@ static void readConfigs(opt::InputArgList &args) {
config->importTable = args.hasArg(OPT_import_table);
config->ltoo = args::getInteger(args, OPT_lto_O, 2);
config->ltoPartitions = args::getInteger(args, OPT_lto_partitions, 1);
config->ltoNewPassManager = args.hasFlag(OPT_lto_new_pass_manager,
OPT_lto_no_new_pass_manager, false);
config->ltoDebugPassManager = args.hasArg(OPT_lto_debug_pass_manager);
config->mapFile = args.getLastArgValue(OPT_Map);
config->optimize = args::getInteger(args, OPT_O, 0);
config->outputFile = args.getLastArgValue(OPT_o);

2
lld/wasm/LTO.cpp
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@ -52,6 +52,8 @@ static std::unique_ptr<lto::LTO> createLTO() {
c.OptLevel = config->ltoo;
c.MAttrs = getMAttrs();
c.CGOptLevel = args::getCGOptLevel(config->ltoo);
c.UseNewPM = config->ltoNewPassManager;
c.DebugPassManager = config->ltoDebugPassManager;
if (config->relocatable)
c.RelocModel = None;

6
lld/wasm/Options.td
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@ -215,6 +215,12 @@ def thinlto_cache_dir: J<"thinlto-cache-dir=">,
defm thinlto_cache_policy: Eq<"thinlto-cache-policy", "Pruning policy for the ThinLTO cache">;
def thinlto_jobs: J<"thinlto-jobs=">,
HelpText<"Number of ThinLTO jobs. Default to --threads=">;
def lto_new_pass_manager: F<"lto-new-pass-manager">,
HelpText<"Use new pass manager">;
def lto_no_new_pass_manager: F<"lto-no-new-pass-manager">,
HelpText<"Use legacy pass manager">;
def lto_debug_pass_manager: F<"lto-debug-pass-manager">,
HelpText<"Debug new pass manager">;
// Experimental PIC mode.
def experimental_pic: F<"experimental-pic">,