gentoo/sci-libs/symengine/files/symengine-0.14.0-llvm.patch

From de7305e5e2fee97d80c25164a8f8c9f7ecfc9953 Mon Sep 17 00:00:00 2001
From: Liam Keegan <liam@keegan.ch>
Date: Thu, 26 Jun 2025 14:51:50 +0200
Subject: [PATCH] Fix issues when compiled against LLVM 20 built with
 assertions enabled

- `Assertion `Level != OptimizationLevel::O0 && "Must request optimizations!"'`
  - skip simplification pipeline for O0
  - copied from https://github.com/symengine/symengine/issues/2076#issue-2764070679
- `Assertion `GV->hasName() && "Global must have name."'`
  - give the function a name
- `getDeclaration` is deprecated in llvm 20 and will be removed in next version
  - use replacement `getOrInsertDeclaration` for llvm >= 20
- resolves #2076
---
 symengine/llvm_double.cpp | 34 +++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)

diff --git a/symengine/llvm_double.cpp b/symengine/llvm_double.cpp
index fe06ebcc7..8ae3b4adf 100644
--- a/symengine/llvm_double.cpp
+++ b/symengine/llvm_double.cpp
@@ -52,6 +52,12 @@ using CodeGenOptLevel = llvm::CodeGenOpt::Level;
 using CodeGenOptLevel = llvm::CodeGenOptLevel;
 #endif
 
+#if (LLVM_VERSION_MAJOR < 20)
+const auto &GetDeclaration = llvm::Intrinsic::getDeclaration;
+#else
+const auto &GetDeclaration = llvm::Intrinsic::getOrInsertDeclaration;
+#endif
+
 #if (LLVM_VERSION_MAJOR >= 21)
 #define AddNoCapture(A) A.addCapturesAttr(llvm::CaptureInfo::none())
 #else
@@ -85,8 +91,8 @@ llvm::Function *LLVMVisitor::get_function_type(llvm::LLVMContext *context)
     }
     llvm::FunctionType *function_type = llvm::FunctionType::get(
         llvm::Type::getVoidTy(*context), inp, /*isVarArgs=*/false);
-    auto F = llvm::Function::Create(function_type,
-                                    llvm::Function::InternalLinkage, "", mod);
+    auto F = llvm::Function::Create(
+        function_type, llvm::Function::InternalLinkage, "symengine_func", mod);
     F->setCallingConv(llvm::CallingConv::C);
 #if (LLVM_VERSION_MAJOR < 5)
     {
@@ -265,16 +271,19 @@ void LLVMVisitor::init(const vec_basic &inputs, const vec_basic &outputs,
     } else if (opt_level == 2) {
         pb_opt_level = OptimizationLevel::O2;
     }
+
+    if (opt_level != 0) {
 #if (LLVM_VERSION_MAJOR < 6)
-    FPM = PB.buildFunctionSimplificationPipeline(pb_opt_level);
+        FPM = PB.buildFunctionSimplificationPipeline(pb_opt_level);
 #elif (LLVM_VERSION_MAJOR < 12)
-    FPM = PB.buildFunctionSimplificationPipeline(
-        pb_opt_level, llvm::PassBuilder::ThinLTOPhase::None);
+        FPM = PB.buildFunctionSimplificationPipeline(
+            pb_opt_level, llvm::PassBuilder::ThinLTOPhase::None);
 #else
-    FPM = PB.buildFunctionSimplificationPipeline(
-        pb_opt_level, llvm::ThinOrFullLTOPhase::None);
+        FPM = PB.buildFunctionSimplificationPipeline(
+            pb_opt_level, llvm::ThinOrFullLTOPhase::None);
 #endif
-    FPM.run(*F, FAM);
+        FPM.run(*F, FAM);
+    }
 
     // std::cout << "Optimized LLVM IR" << std::endl;
     // module->print(llvm::errs(), nullptr);
@@ -293,7 +302,7 @@ void LLVMVisitor::init(const vec_basic &inputs, const vec_basic &outputs,
     {
     public:
         std::string &ss_;
-        MemoryBufferRefCallback(std::string &ss) : ss_(ss) {}
+        explicit MemoryBufferRefCallback(std::string &ss) : ss_(ss) {}
 
         void notifyObjectCompiled(const llvm::Module *M,
                                   llvm::MemoryBufferRef obj) override
@@ -306,7 +315,7 @@ void LLVMVisitor::init(const vec_basic &inputs, const vec_basic &outputs,
         std::unique_ptr<llvm::MemoryBuffer>
         getObject(const llvm::Module *M) override
         {
-            return NULL;
+            return nullptr;
         }
     };
 
@@ -492,15 +501,14 @@ llvm::Function *LLVMVisitor::get_powi()
 #if (LLVM_VERSION_MAJOR > 12)
     arg_type.push_back(llvm::Type::getInt32Ty(mod->getContext()));
 #endif
-    return llvm::Intrinsic::getDeclaration(mod, llvm::Intrinsic::powi,
-                                           arg_type);
+    return GetDeclaration(mod, llvm::Intrinsic::powi, arg_type);
 }
 
 llvm::Function *get_float_intrinsic(llvm::Type *type, llvm::Intrinsic::ID id,
                                     unsigned n, llvm::Module *mod)
 {
     std::vector<llvm::Type *> arg_type(n, type);
-    return llvm::Intrinsic::getDeclaration(mod, id, arg_type);
+    return GetDeclaration(mod, id, arg_type);
 }
 
 void LLVMVisitor::bvisit(const Pow &x)
From 899a130e071768e76da8f749341b5303ca1ab6e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Sun, 20 Jul 2025 19:02:16 +0200
Subject: [PATCH] Fix LLVM dylib use in installed CMake config
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This is a followup to #2075 that fixes linking against LLVM dylib
in reverse dependencies of SymEngine (e.g. the Python package).
Unfortunately, my original patch missed this second occurrence.

Given that we permit overriding the dylib use via a cache variable
and it is unlikely for a dylib install to suddenly become non-dylib
let's store the value in the config file.

Signed-off-by: Michał Górny <mgorny@gentoo.org>
---
 cmake/SymEngineConfig.cmake.in | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/cmake/SymEngineConfig.cmake.in b/cmake/SymEngineConfig.cmake.in
index 8465298a7..45e46ed75 100644
--- a/cmake/SymEngineConfig.cmake.in
+++ b/cmake/SymEngineConfig.cmake.in
@@ -84,8 +84,13 @@ set(SYMENGINE_LLVM_COMPONENTS @SYMENGINE_LLVM_COMPONENTS@)
 
 if (NOT "${SYMENGINE_LLVM_COMPONENTS}" STREQUAL "")
     find_package(LLVM REQUIRED ${SYMENGINE_LLVM_COMPONENTS} HINTS @LLVM_DIR@)
-    llvm_map_components_to_libnames(llvm_libs_direct ${SYMENGINE_LLVM_COMPONENTS})
-    llvm_expand_dependencies(llvm_libs ${llvm_libs_direct})
+    set(SYMENGINE_LINKED_LLVM_DYLIB @WITH_LLVM_DYLIB@)
+    if (SYMENGINE_LINKED_LLVM_DYLIB)
+        set(llvm_libs LLVM)
+    else()
+        llvm_map_components_to_libnames(llvm_libs_direct ${SYMENGINE_LLVM_COMPONENTS})
+        llvm_expand_dependencies(llvm_libs ${llvm_libs_direct})
+    endif()
     set(SYMENGINE_LIBRARIES ${SYMENGINE_LIBRARIES} ${llvm_libs})
 else()
     set(SYMENGINE_LLVM_INCLUDE_DIRS)