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authorTeresa Johnson <tejohnson@google.com>2017-03-31 22:35:47 +0000
committerTeresa Johnson <tejohnson@google.com>2017-03-31 22:35:47 +0000
commitb637cb07ede5f2266d3a651f9f671e3477dd496b (patch)
treec4e4ae853cdeb4d6fcb49e62864140b67dd9e9be /clang/lib/CodeGen/BackendUtil.cpp
parent47fd2de304d459736d313f74b17d5d2890518d08 (diff)
downloadbcm5719-llvm-b637cb07ede5f2266d3a651f9f671e3477dd496b.tar.gz
bcm5719-llvm-b637cb07ede5f2266d3a651f9f671e3477dd496b.zip
[ThinLTO] Handle -emit-llvm* in ThinLTO backends
Summary: Use PreCodeGenModuleHook to invoke the correct writer when emitting LLVM IR, returning false to skip codegen from within thinBackend. Reviewers: pcc, mehdi_amini Subscribers: Prazek, cfe-commits Differential Revision: https://reviews.llvm.org/D31534 llvm-svn: 299274
Diffstat (limited to 'clang/lib/CodeGen/BackendUtil.cpp')
-rw-r--r--clang/lib/CodeGen/BackendUtil.cpp23
1 files changed, 22 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 5982128888c..874fd140941 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -994,9 +994,30 @@ static void runThinLTOBackend(ModuleSummaryIndex *CombinedIndex, Module *M,
Conf.MAttrs = TOpts.Features;
Conf.RelocModel = getRelocModel(CGOpts);
Conf.CGOptLevel = getCGOptLevel(CGOpts);
- Conf.CGFileType = getCodeGenFileType(Action);
initTargetOptions(Conf.Options, CGOpts, TOpts, LOpts, HeaderOpts);
Conf.SampleProfile = std::move(SampleProfile);
+ switch (Action) {
+ case Backend_EmitNothing:
+ Conf.PreCodeGenModuleHook = [](size_t Task, const Module &Mod) {
+ return false;
+ };
+ break;
+ case Backend_EmitLL:
+ Conf.PreCodeGenModuleHook = [&](size_t Task, const Module &Mod) {
+ M->print(*OS, nullptr, CGOpts.EmitLLVMUseLists);
+ return false;
+ };
+ break;
+ case Backend_EmitBC:
+ Conf.PreCodeGenModuleHook = [&](size_t Task, const Module &Mod) {
+ WriteBitcodeToFile(M, *OS, CGOpts.EmitLLVMUseLists);
+ return false;
+ };
+ break;
+ default:
+ Conf.CGFileType = getCodeGenFileType(Action);
+ break;
+ }
if (Error E = thinBackend(
Conf, 0, AddStream, *M, *CombinedIndex, ImportList,
ModuleToDefinedGVSummaries[M->getModuleIdentifier()], ModuleMap)) {
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