From 5ab02820562429ed0ac7df8be555bc66063ce130 Mon Sep 17 00:00:00 2001
From: Julien Roy <julien@jroy.ca>
Date: Fri, 10 Dec 2021 10:29:37 -0500
Subject: Added patches for llvm-rom from gentoo tree

---
 .../files/llvm-roc-4.0.0-hip-location.patch        | 84 ++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 sys-devel/llvm-roc/files/llvm-roc-4.0.0-hip-location.patch

(limited to 'sys-devel/llvm-roc/files/llvm-roc-4.0.0-hip-location.patch')

diff --git a/sys-devel/llvm-roc/files/llvm-roc-4.0.0-hip-location.patch b/sys-devel/llvm-roc/files/llvm-roc-4.0.0-hip-location.patch
new file mode 100644
index 0000000..225adc7
--- /dev/null
+++ b/sys-devel/llvm-roc/files/llvm-roc-4.0.0-hip-location.patch
@@ -0,0 +1,84 @@
+replace hardcoded hip finder with Gentoo paths.
+
+It is not necessary to check HIP runtime each time.
+
+Author: Benda Xu <heroxbd@gentoo.org>
+
+Index: llvm-project-rocm-4.0.0/clang/lib/Driver/ToolChains/AMDGPU.cpp
+===================================================================
+--- llvm-project-rocm-4.0.0.orig/clang/lib/Driver/ToolChains/AMDGPU.cpp
++++ llvm-project-rocm-4.0.0/clang/lib/Driver/ToolChains/AMDGPU.cpp
+@@ -116,37 +116,8 @@ RocmInstallationDetector::getInstallatio
+     return Candidates;
+   }
+ 
+-  // Try to find relative to the compiler binary.
+-  const char *InstallDir = D.getInstalledDir();
++  Candidates.emplace_back(D.SysRoot + "/usr", /*StrictChecking=*/true);
+ 
+-  // Check both a normal Unix prefix position of the clang binary, as well as
+-  // the Windows-esque layout the ROCm packages use with the host architecture
+-  // subdirectory of bin.
+-
+-  // Strip off directory (usually bin)
+-  StringRef ParentDir = llvm::sys::path::parent_path(InstallDir);
+-  StringRef ParentName = llvm::sys::path::filename(ParentDir);
+-
+-  // Some builds use bin/{host arch}, so go up again.
+-  if (ParentName == "bin") {
+-    ParentDir = llvm::sys::path::parent_path(ParentDir);
+-    ParentName = llvm::sys::path::filename(ParentDir);
+-  }
+-
+-  // Some versions of the rocm llvm package install to /opt/rocm/llvm/bin
+-  if (ParentName == "llvm")
+-    ParentDir = llvm::sys::path::parent_path(ParentDir);
+-
+-  Candidates.emplace_back(ParentDir.str(), /*StrictChecking=*/true);
+-
+-  // Device library may be installed in clang resource directory.
+-  Candidates.emplace_back(D.ResourceDir, /*StrictChecking=*/true);
+-
+-  Candidates.emplace_back(D.SysRoot + "/opt/rocm", /*StrictChecking=*/true);
+-  if (ParentName.startswith("aomp")) {
+-    // Some versions of the aomp package install to /opt/rocm/aomp/bin
+-    Candidates.emplace_back(ParentDir.str());
+-  }
+   return Candidates;
+ }
+ 
+@@ -273,33 +244,7 @@ void RocmInstallationDetector::detectDev
+ }
+ 
+ void RocmInstallationDetector::detectHIPRuntime() {
+-  auto Candidates = getInstallationPathCandidates();
+-  auto &FS = D.getVFS();
+-
+-  for (const auto &Candidate : Candidates) {
+-    InstallPath = Candidate.Path;
+-    if (InstallPath.empty() || !FS.exists(InstallPath))
+-      continue;
+-
+-    BinPath = InstallPath;
+-    llvm::sys::path::append(BinPath, "bin");
+-    IncludePath = InstallPath;
+-    llvm::sys::path::append(IncludePath, "include");
+-    LibPath = InstallPath;
+-    llvm::sys::path::append(LibPath, "lib");
+-
+-    llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> VersionFile =
+-        FS.getBufferForFile(BinPath + "/.hipVersion");
+-    if (!VersionFile && Candidate.StrictChecking)
+-      continue;
+-
+-    if (HIPVersionArg.empty() && VersionFile)
+-      ParseHIPVersionFile((*VersionFile)->getBuffer());
+-
+-    HasHIPRuntime = true;
+-    return;
+-  }
+-  HasHIPRuntime = false;
++  HasHIPRuntime = true;
+ }
+ 
+ void RocmInstallationDetector::print(raw_ostream &OS) const {
-- 
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