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author | Justin Bogner <mail@justinbogner.com> | 2013-11-12 21:44:01 +0000 |
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committer | Justin Bogner <mail@justinbogner.com> | 2013-11-12 21:44:01 +0000 |
commit | dc6b4b4fc2665eea17684d29e4dae219b258b5ef (patch) | |
tree | 3098f3760218f627a65eb20fe6b2935d088dfe63 /include/llvm | |
parent | 59e648e3c8966e0678902a2994558f25c8573ce4 (diff) | |
download | external_llvm-dc6b4b4fc2665eea17684d29e4dae219b258b5ef.zip external_llvm-dc6b4b4fc2665eea17684d29e4dae219b258b5ef.tar.gz external_llvm-dc6b4b4fc2665eea17684d29e4dae219b258b5ef.tar.bz2 |
Protect user-supplied runtime library functions in LTO
Add user-supplied C runtime and compiler-rt library functions to
llvm.compiler.used to protect them from premature optimization by
passes like -globalopt and -ipsccp. Calls to (seemingly unused)
runtime library functions can be added by -instcombine and instruction
lowering.
Patch by Duncan Exon Smith, thanks!
Fixes <rdar://problem/14740087>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194514 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm')
-rw-r--r-- | include/llvm/LTO/LTOCodeGenerator.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/LTO/LTOCodeGenerator.h b/include/llvm/LTO/LTOCodeGenerator.h index 97a5066..c478bd9 100644 --- a/include/llvm/LTO/LTOCodeGenerator.h +++ b/include/llvm/LTO/LTOCodeGenerator.h @@ -38,6 +38,7 @@ #include "llvm-c/lto.h" #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/StringMap.h" +#include "llvm/ADT/ArrayRef.h" #include "llvm/Linker.h" #include "llvm/Target/TargetOptions.h" #include <string> @@ -48,6 +49,7 @@ namespace llvm { class GlobalValue; class Mangler; class MemoryBuffer; + class TargetLibraryInfo; class TargetMachine; class raw_ostream; } @@ -125,6 +127,7 @@ private: std::string &errMsg); void applyScopeRestrictions(); void applyRestriction(llvm::GlobalValue &GV, + const llvm::ArrayRef<llvm::StringRef> &Libcalls, std::vector<const char*> &MustPreserveList, llvm::SmallPtrSet<llvm::GlobalValue*, 8> &AsmUsed, llvm::Mangler &Mangler); |