From: Giorgis Georgakoudis <georgakoudis1@llnl.gov>
Date: Wed, 14 Dec 2022 06:57:02 +0000 (-0800)
Subject: [OpenMP] RecordReplay saves bitcode when JIT-ing
X-Git-Tag: upstream/17.0.6~20526
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0f4b4e8e4d8b3aafba829143e2fd4237620ea4d7;p=platform%2Fupstream%2Fllvm.git

[OpenMP] RecordReplay saves bitcode when JIT-ing

This patch enables to store bitcode images when JIT is enabled for the record-and-replay functionality (see https://reviews.llvm.org/D138931). Credits to @jdoerfert for refactoring the code.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D141986
---

diff --git a/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp b/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
index d20fbf6..7cc1aa2 100644
--- a/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
+++ b/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
@@ -122,7 +122,15 @@ public:
     raw_fd_ostream OS(ImageName.str(), EC);
     if (EC)
       report_fatal_error("Error saving image : " + StringRef(EC.message()));
-    OS << Image.getMemoryBuffer().getBuffer();
+    if (auto TgtImageBitcode = Image.getTgtImageBitcode()) {
+      size_t Size =
+          getPtrDiff(TgtImageBitcode->ImageEnd, TgtImageBitcode->ImageStart);
+      MemoryBufferRef MBR = MemoryBufferRef(
+          StringRef((const char *)TgtImageBitcode->ImageStart, Size), "");
+      OS << MBR.getBuffer();
+    } else {
+      OS << Image.getMemoryBuffer().getBuffer();
+    }
     OS.close();
   }
 
@@ -407,6 +415,8 @@ GenericDeviceTy::loadBinary(GenericPluginTy &Plugin,
 
   DeviceImageTy *Image = *ImageOrErr;
   assert(Image != nullptr && "Invalid image");
+  if (InputTgtImage != PostJITImageOrErr.get())
+    Image->setTgtImageBitcode(InputTgtImage);
 
   // Add the image to list.
   LoadedImages.push_back(Image);
diff --git a/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h b/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
index d65209d..e53c666 100644
--- a/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
+++ b/openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
@@ -113,13 +113,14 @@ class DeviceImageTy {
 
   /// The pointer to the raw __tgt_device_image.
   const __tgt_device_image *TgtImage;
+  const __tgt_device_image *TgtImageBitcode;
 
   /// Table of offload entries.
   OffloadEntryTableTy OffloadEntryTable;
 
 public:
   DeviceImageTy(int32_t Id, const __tgt_device_image *Image)
-      : ImageId(Id), TgtImage(Image) {
+      : ImageId(Id), TgtImage(Image), TgtImageBitcode(nullptr) {
     assert(TgtImage && "Invalid target image");
   }
 
@@ -129,6 +130,14 @@ public:
   /// Get the pointer to the raw __tgt_device_image.
   const __tgt_device_image *getTgtImage() const { return TgtImage; }
 
+  void setTgtImageBitcode(const __tgt_device_image *TgtImageBitcode) {
+    this->TgtImageBitcode = TgtImageBitcode;
+  }
+
+  const __tgt_device_image *getTgtImageBitcode() const {
+    return TgtImageBitcode;
+  }
+
   /// Get the image starting address.
   void *getStart() const { return TgtImage->ImageStart; }