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author | Rafael Espindola <rafael.espindola@gmail.com> | 2013-10-16 01:49:05 +0000 |
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committer | Rafael Espindola <rafael.espindola@gmail.com> | 2013-10-16 01:49:05 +0000 |
commit | 3aa342be500a55c3bbee302f3a8db937eaa2c241 (patch) | |
tree | 67a3fdefd87ee3ae640e049750695e3cda468ca9 /lib | |
parent | a486f55569c584d00cfdde43a8755d68cdb68c4f (diff) | |
download | external_llvm-3aa342be500a55c3bbee302f3a8db937eaa2c241.zip external_llvm-3aa342be500a55c3bbee302f3a8db937eaa2c241.tar.gz external_llvm-3aa342be500a55c3bbee302f3a8db937eaa2c241.tar.bz2 |
Add support for metadata representing .ident directives.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192764 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/CodeGen/AsmPrinter/AsmPrinter.cpp | 18 | ||||
-rw-r--r-- | lib/IR/Verifier.cpp | 20 |
2 files changed, 38 insertions, 0 deletions
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp index 60f1bff..0fe341a 100644 --- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp +++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp @@ -953,6 +953,9 @@ bool AsmPrinter::doFinalization(Module &M) { if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*--I)) MP->finishAssembly(*this); + // Emit llvm.ident metadata in an '.ident' directive. + EmitModuleIdents(M); + // If we don't have any trampolines, then we don't require stack memory // to be executable. Some targets have a directive to declare this. Function *InitTrampolineIntrinsic = M.getFunction("llvm.init.trampoline"); @@ -1332,6 +1335,21 @@ void AsmPrinter::EmitXXStructorList(const Constant *List, bool isCtor) { } } +void AsmPrinter::EmitModuleIdents(Module &M) { + if (!MAI->hasIdentDirective()) + return; + + if (const NamedMDNode *NMD = M.getNamedMetadata("llvm.ident")) { + for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) { + const MDNode *N = NMD->getOperand(i); + assert(N->getNumOperands() == 1 && + "llvm.ident metadata entry can have only one operand"); + const MDString *S = cast<MDString>(N->getOperand(0)); + OutStreamer.EmitIdent(S->getString()); + } + } +} + //===--------------------------------------------------------------------===// // Emission and print routines // diff --git a/lib/IR/Verifier.cpp b/lib/IR/Verifier.cpp index c7559c1..7d657de 100644 --- a/lib/IR/Verifier.cpp +++ b/lib/IR/Verifier.cpp @@ -216,6 +216,7 @@ namespace { visitNamedMDNode(*I); visitModuleFlags(M); + visitModuleIdents(M); // Verify Debug Info. verifyDebugInfo(M); @@ -260,6 +261,7 @@ namespace { void visitGlobalAlias(GlobalAlias &GA); void visitNamedMDNode(NamedMDNode &NMD); void visitMDNode(MDNode &MD, Function *F); + void visitModuleIdents(Module &M); void visitModuleFlags(Module &M); void visitModuleFlag(MDNode *Op, DenseMap<MDString*, MDNode*> &SeenIDs, SmallVectorImpl<MDNode*> &Requirements); @@ -613,6 +615,24 @@ void Verifier::visitMDNode(MDNode &MD, Function *F) { } } +void Verifier::visitModuleIdents(Module &M) { + const NamedMDNode *Idents = M.getNamedMetadata("llvm.ident"); + if (!Idents) + return; + + // llvm.ident takes a list of metadata entry. Each entry has only one string. + // Scan each llvm.ident entry and make sure that this requirement is met. + for (unsigned i = 0, e = Idents->getNumOperands(); i != e; ++i) { + const MDNode *N = Idents->getOperand(i); + Assert1(N->getNumOperands() == 1, + "incorrect number of operands in llvm.ident metadata", N); + Assert1(isa<MDString>(N->getOperand(0)), + ("invalid value for llvm.ident metadata entry operand" + "(the operand should be a string)"), + N->getOperand(0)); + } +} + void Verifier::visitModuleFlags(Module &M) { const NamedMDNode *Flags = M.getModuleFlagsMetadata(); if (!Flags) return; |