From 10d3f8a484a812db995198f17b17462718f477bc Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Sun, 26 Jul 2020 20:11:30 +0300
Subject: Move `rustllvm` into `rustc_llvm`

---
 .../llvm-wrapper/CoverageMappingWrapper.cpp        | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp

(limited to 'compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp')

diff --git a/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp
new file mode 100644
index 00000000000..2b1143a4ecf
--- /dev/null
+++ b/compiler/rustc_llvm/llvm-wrapper/CoverageMappingWrapper.cpp
@@ -0,0 +1,70 @@
+#include "LLVMWrapper.h"
+#include "llvm/ProfileData/Coverage/CoverageMapping.h"
+#include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
+#include "llvm/ProfileData/InstrProf.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Support/LEB128.h"
+
+#include <iostream>
+
+using namespace llvm;
+
+extern "C" void LLVMRustCoverageWriteFilenamesSectionToBuffer(
+    const char* const Filenames[],
+    size_t FilenamesLen,
+    RustStringRef BufferOut) {
+  // LLVM 11's CoverageFilenamesSectionWriter uses its new `Version4` format,
+  // so we're manually writing the `Version3` format ourselves.
+  RawRustStringOstream OS(BufferOut);
+  encodeULEB128(FilenamesLen, OS);
+  for (size_t i = 0; i < FilenamesLen; i++) {
+    StringRef Filename(Filenames[i]);
+    encodeULEB128(Filename.size(), OS);
+    OS << Filename;
+  }
+}
+
+extern "C" void LLVMRustCoverageWriteMappingToBuffer(
+    const unsigned *VirtualFileMappingIDs,
+    unsigned NumVirtualFileMappingIDs,
+    const coverage::CounterExpression *Expressions,
+    unsigned NumExpressions,
+    coverage::CounterMappingRegion *MappingRegions,
+    unsigned NumMappingRegions,
+    RustStringRef BufferOut) {
+  auto CoverageMappingWriter = coverage::CoverageMappingWriter(
+      makeArrayRef(VirtualFileMappingIDs, NumVirtualFileMappingIDs),
+      makeArrayRef(Expressions, NumExpressions),
+      makeMutableArrayRef(MappingRegions, NumMappingRegions));
+  RawRustStringOstream OS(BufferOut);
+  CoverageMappingWriter.write(OS);
+}
+
+extern "C" LLVMValueRef LLVMRustCoverageCreatePGOFuncNameVar(LLVMValueRef F, const char *FuncName) {
+  StringRef FuncNameRef(FuncName);
+  return wrap(createPGOFuncNameVar(*cast<Function>(unwrap(F)), FuncNameRef));
+}
+
+extern "C" uint64_t LLVMRustCoverageComputeHash(const char *Name) {
+  StringRef NameRef(Name);
+  return IndexedInstrProf::ComputeHash(NameRef);
+}
+
+extern "C" void LLVMRustCoverageWriteSectionNameToString(LLVMModuleRef M,
+                                                         RustStringRef Str) {
+  Triple TargetTriple(unwrap(M)->getTargetTriple());
+  auto name = getInstrProfSectionName(IPSK_covmap,
+                                      TargetTriple.getObjectFormat());
+  RawRustStringOstream OS(Str);
+  OS << name;
+}
+
+extern "C" void LLVMRustCoverageWriteMappingVarNameToString(RustStringRef Str) {
+  auto name = getCoverageMappingVarName();
+  RawRustStringOstream OS(Str);
+  OS << name;
+}
+
+extern "C" uint32_t LLVMRustCoverageMappingVersion() {
+  return coverage::CovMapVersion::Version3;
+}
-- 
cgit 1.4.1-3-g733a5