================
@@ -163,3 +163,87 @@ Error
GenericGlobalHandlerTy::readGlobalFromImage(GenericDeviceTy &Device,
return Plugin::success();
}
+
+bool GenericGlobalHandlerTy::hasProfilingGlobals(GenericDeviceTy &Device,
+ DeviceImageTy &Image) {
+ GlobalTy global(getInstrProfNamesVarName().str(), 0);
+ if (auto Err = getGlobalMetadataFromImage(Device, Image, global)) {
+ consumeError(std::move(Err));
+ return false;
+ }
+ return true;
+}
+
+Expected<GPUProfGlobals>
+GenericGlobalHandlerTy::readProfilingGlobals(GenericDeviceTy &Device,
+ DeviceImageTy &Image) {
+ GPUProfGlobals profdata;
+ auto ELFObj = getELFObjectFile(Image);
+ if (!ELFObj)
+ return ELFObj.takeError();
+ profdata.targetTriple = ELFObj->makeTriple();
+ // Iterate through elf symbols
+ for (auto &sym : ELFObj->symbols()) {
+ if (auto name = sym.getName()) {
+ // Check if given current global is a profiling global based
+ // on name
+ if (name->equals(getInstrProfNamesVarName())) {
+ // Read in profiled function names
+ std::vector<char> chars(sym.getSize() / sizeof(char), ' ');
+ GlobalTy NamesGlobal(name->str(), sym.getSize(), chars.data());
----------------
jhuber6 wrote:
Okay, we're reading a string back from the device? What's the purpose of that?
Also, just so you know, the ELF will only contain the correct size if it's
emitted as an array. E.g.
```
const char a[] = "a"; // strlen("a") + 1 in ELF
const char *b = "b"; // sizeof(char *) in ELF
```
https://github.com/llvm/llvm-project/pull/76587
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