From 6e94fa58c39ec536909e795ebb9bf3480ee4a36f Mon Sep 17 00:00:00 2001 From: Justin Hibbits Date: Tue, 18 Nov 2014 06:17:20 +0000 Subject: [PATCH] Add PIC-level support to Clang. Summary: This distinguishes between -fpic and -fPIC now, with the additions in LLVM for PIC level support. Test Plan: No regressions Reviewers: echristo, rafael Reviewed By: rafael Subscribers: rnk, emaste, llvm-commits Differential Revision: http://reviews.llvm.org/D5400 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222227 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/CodeGenModule.cpp | 12 ++++++++++++ test/CodeGen/piclevels.c | 7 +++++++ 2 files changed, 19 insertions(+) create mode 100644 test/CodeGen/piclevels.c diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp index fe565523fd..a68f369457 100644 --- a/lib/CodeGen/CodeGenModule.cpp +++ b/lib/CodeGen/CodeGenModule.cpp @@ -391,6 +391,18 @@ void CodeGenModule::Release() { getModule().addModuleFlag(llvm::Module::Error, "min_enum_size", EnumWidth); } + if (uint32_t PLevel = Context.getLangOpts().PICLevel) { + llvm::PICLevel::Level PL = llvm::PICLevel::Default; + switch (PLevel) { + case 0: break; + case 1: PL = llvm::PICLevel::Small; break; + case 2: PL = llvm::PICLevel::Large; break; + default: llvm_unreachable("Invalid PIC Level"); + } + + getModule().setPICLevel(PL); + } + SimplifyPersonality(); if (getCodeGenOpts().EmitDeclMetadata) diff --git a/test/CodeGen/piclevels.c b/test/CodeGen/piclevels.c new file mode 100644 index 0000000000..1cd750cdd4 --- /dev/null +++ b/test/CodeGen/piclevels.c @@ -0,0 +1,7 @@ +// RUN: %clang_cc1 -emit-llvm -pic-level 2 %s -o - | FileCheck %s -check-prefix=CHECK-BIGPIC +// RUN: %clang_cc1 -emit-llvm -pic-level 1 %s -o - | FileCheck %s -check-prefix=CHECK-SMALLPIC + +// CHECK-BIGPIC: !llvm.module.flags = !{{{.*}}} +// CHECK-BIGPIC: !{{[0-9]+}} = metadata !{i32 1, metadata !"PIC Level", i32 2} +// CHECK-SMALLPIC: !llvm.module.flags = !{{{.*}}} +// CHECK-SMALLPIC: !{{[0-9]+}} = metadata !{i32 1, metadata !"PIC Level", i32 1} -- 2.40.0