[LLVM-C] Add Bindings For Named Metadata
Summary: Add a new type for named metadata nodes. Use this to implement iterators and accessors for NamedMDNodes and extend the echo test to use them to copy module-level debug information.
Reviewers: whitequark, deadalnix, aprantl, dexonsmith
Reviewed By: whitequark
Subscribers: Wallbraker, JDevlieghere, llvm-commits, harlanhaskins
Differential Revision: https://reviews.llvm.org/D47179
llvm-svn: 341085
diff --git a/llvm/tools/llvm-c-test/echo.cpp b/llvm/tools/llvm-c-test/echo.cpp
index a9cd4cf..60638eb 100644
--- a/llvm/tools/llvm-c-test/echo.cpp
+++ b/llvm/tools/llvm-c-test/echo.cpp
@@ -916,7 +916,7 @@
if (!Begin) {
if (End != nullptr)
report_fatal_error("Range has an end but no beginning");
- return;
+ goto NamedMDDecl;
}
Cur = Begin;
@@ -943,6 +943,38 @@
Cur = Next;
}
+
+NamedMDDecl:
+ LLVMNamedMDNodeRef BeginMD = LLVMGetFirstNamedMetadata(Src);
+ LLVMNamedMDNodeRef EndMD = LLVMGetLastNamedMetadata(Src);
+ if (!BeginMD) {
+ if (EndMD != nullptr)
+ report_fatal_error("Range has an end but no beginning");
+ return;
+ }
+
+ LLVMNamedMDNodeRef CurMD = BeginMD;
+ LLVMNamedMDNodeRef NextMD = nullptr;
+ while (true) {
+ size_t NameLen;
+ const char *Name = LLVMGetNamedMetadataName(CurMD, &NameLen);
+ if (LLVMGetNamedMetadata(M, Name, NameLen))
+ report_fatal_error("Named Metadata Node already cloned");
+ LLVMGetOrInsertNamedMetadata(M, Name, NameLen);
+
+ NextMD = LLVMGetNextNamedMetadata(CurMD);
+ if (NextMD == nullptr) {
+ if (CurMD != EndMD)
+ report_fatal_error("");
+ break;
+ }
+
+ LLVMNamedMDNodeRef PrevMD = LLVMGetPreviousNamedMetadata(NextMD);
+ if (PrevMD != CurMD)
+ report_fatal_error("Next.Previous global is not Current");
+
+ CurMD = NextMD;
+ }
}
static void clone_symbols(LLVMModuleRef Src, LLVMModuleRef M) {
@@ -1041,7 +1073,7 @@
if (!Begin) {
if (End != nullptr)
report_fatal_error("Range has an end but no beginning");
- return;
+ goto NamedMDClone;
}
Cur = Begin;
@@ -1073,6 +1105,47 @@
Cur = Next;
}
+
+NamedMDClone:
+ LLVMNamedMDNodeRef BeginMD = LLVMGetFirstNamedMetadata(Src);
+ LLVMNamedMDNodeRef EndMD = LLVMGetLastNamedMetadata(Src);
+ if (!BeginMD) {
+ if (EndMD != nullptr)
+ report_fatal_error("Range has an end but no beginning");
+ return;
+ }
+
+ LLVMNamedMDNodeRef CurMD = BeginMD;
+ LLVMNamedMDNodeRef NextMD = nullptr;
+ while (true) {
+ size_t NameLen;
+ const char *Name = LLVMGetNamedMetadataName(CurMD, &NameLen);
+ LLVMNamedMDNodeRef NamedMD = LLVMGetNamedMetadata(M, Name, NameLen);
+ if (!NamedMD)
+ report_fatal_error("Named MD Node must have been declared already");
+
+ unsigned OperandCount = LLVMGetNamedMetadataNumOperands(Src, Name);
+ LLVMValueRef *OperandBuf = static_cast<LLVMValueRef *>(
+ safe_malloc(OperandCount * sizeof(LLVMValueRef)));
+ LLVMGetNamedMetadataOperands(Src, Name, OperandBuf);
+ for (unsigned i = 0, e = OperandCount; i != e; ++i) {
+ LLVMAddNamedMetadataOperand(M, Name, OperandBuf[i]);
+ }
+ free(OperandBuf);
+
+ NextMD = LLVMGetNextNamedMetadata(CurMD);
+ if (NextMD == nullptr) {
+ if (CurMD != EndMD)
+ report_fatal_error("Last Named MD Node does not match End");
+ break;
+ }
+
+ LLVMNamedMDNodeRef PrevMD = LLVMGetPreviousNamedMetadata(NextMD);
+ if (PrevMD != CurMD)
+ report_fatal_error("Next.Previous Named MD Node is not Current");
+
+ CurMD = NextMD;
+ }
}
int llvm_echo(void) {
@@ -1089,18 +1162,6 @@
LLVMSetSourceFileName(M, SourceFileName, SourceFileLen);
LLVMSetModuleIdentifier(M, ModuleName, ModuleIdentLen);
- size_t SourceFlagsLen;
- LLVMModuleFlagEntry *ModuleFlags =
- LLVMCopyModuleFlagsMetadata(Src, &SourceFlagsLen);
- for (unsigned i = 0; i < SourceFlagsLen; ++i) {
- size_t EntryNameLen;
- const char *EntryName =
- LLVMModuleFlagEntriesGetKey(ModuleFlags, i, &EntryNameLen);
- LLVMAddModuleFlag(M, LLVMModuleFlagEntriesGetFlagBehavior(ModuleFlags, i),
- EntryName, EntryNameLen,
- LLVMModuleFlagEntriesGetMetadata(ModuleFlags, i));
- }
-
LLVMSetTarget(M, LLVMGetTarget(Src));
LLVMSetModuleDataLayout(M, LLVMGetModuleDataLayout(Src));
if (strcmp(LLVMGetDataLayoutStr(M), LLVMGetDataLayoutStr(Src)))
@@ -1115,7 +1176,6 @@
char *Str = LLVMPrintModuleToString(M);
fputs(Str, stdout);
- LLVMDisposeModuleFlagsMetadata(ModuleFlags);
LLVMDisposeMessage(Str);
LLVMDisposeModule(Src);
LLVMDisposeModule(M);