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Add support for LTO plugin option obj-path 

Differential Revision: https://reviews.llvm.org/D46598

llvm-svn: 331817
This commit is contained in:
Rumeet Dhindsa 2018-05-08 22:37:57 +00:00
parent d24dcdd1f7
commit b5b7d6e19c
4 changed files with 11 additions and 7 deletions
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1
lld/ELF/Config.h
View File

@ -86,6 +86,7 @@ struct Configuration {
llvm::StringRef Init;
llvm::StringRef LTOAAPipeline;
llvm::StringRef LTONewPmPasses;
llvm::StringRef LTOObjPath;
llvm::StringRef LTOSampleProfile;
llvm::StringRef MapFile;
llvm::StringRef OutputFile;

2
lld/ELF/Driver.cpp
View File

@ -796,6 +796,8 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
Config->LTODebugPassManager = true;
} else if (S.startswith("sample-profile=")) {
Config->LTOSampleProfile = S.substr(15);
} else if (S.startswith("obj-path=")) {
Config->LTOObjPath = S.substr(9);
} else if (S == "thinlto-index-only") {
Config->ThinLTOIndexOnly = true;
} else if (S.startswith("thinlto-index-only=")) {

4
lld/ELF/LTO.cpp
View File

@ -279,8 +279,8 @@ std::vector<InputFile *> BitcodeCompiler::compile() {
openFile(Path + ".imports");
}
if (Config->SaveTemps)
saveBuffer(Buff[0], Config->OutputFile + ".lto.o");
if (!Config->LTOObjPath.empty())
saveBuffer(Buff[0], Config->LTOObjPath);
// ThinLTO with index only option is required to generate only the index
// files. After that, we exit from linker and ThinLTO backend runs in a

11
lld/test/ELF/lto/thinlto.ll
View File

@ -49,11 +49,6 @@
; RUN: not ls %t2.o.thinlto.bc
; RUN: not ls %t4.o.thinlto.bc
; Ensure lld generates one regular LTO file via splitting for ThinLTO builds
; RUN: rm -f %t.lto.o
; RUN: ld.lld -save-temps --plugin-opt=thinlto-index-only -shared %t.o %t2.o -o %t
; RUN: llvm-readobj -h %t.lto.o | FileCheck %s --check-prefix=FORMAT
; First force single-threaded mode
; RUN: rm -f %t.lto.o %t1.lto.o
; RUN: ld.lld -save-temps --thinlto-jobs=1 -shared %t.o %t2.o -o %t
@ -71,6 +66,12 @@
; stable on the final output file itself.
; RUN: ld.lld -shared %t.o %t2.o -o %t2
; Test to ensure that thinlto-index-only with obj-path creates the file.
; RUN: rm -f %t5.o
; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=obj-path=%t5.o -shared %t.o %t2.o -o %t4
; RUN: llvm-readobj -h %t5.o | FileCheck %s --check-prefix=FORMAT
; RUN: llvm-nm %t5.o | count 0
; NM: T f
; NM1: T f
; NM1-NOT: U g