From a9ca888fc4f4c819f84dd04a373c92f990e724c6 Mon Sep 17 00:00:00 2001
From: Alexis Engelke <engelke@in.tum.de>
Date: Thu, 19 Mar 2026 21:42:49 +0100
Subject: [PATCH] [IR][CAPI] Mark LLVMIsABranchInst as deprecated (#187576)

Follow-up of https://github.com/llvm/llvm-project/pull/187314.
---
 llvm/include/llvm-c/Core.h | 9 ++++++---
 llvm/lib/IR/Core.cpp       | 9 ++++++---
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/llvm/include/llvm-c/Core.h b/llvm/include/llvm-c/Core.h
index ca71f4a90b41..7f648dd53d9f 100644
--- a/llvm/include/llvm-c/Core.h
+++ b/llvm/include/llvm-c/Core.h
@@ -2081,9 +2081,8 @@ LLVM_C_ABI unsigned LLVMGetTargetExtTypeIntParam(LLVMTypeRef TargetExtTy,
       macro(SelectInst)                     \
       macro(ShuffleVectorInst)              \
       macro(StoreInst)                      \
-      macro(BranchInst)                     \
-        macro(UncondBrInst)                 \
-        macro(CondBrInst)                   \
+      macro(UncondBrInst)                   \
+      macro(CondBrInst)                     \
       macro(IndirectBrInst)                 \
       macro(InvokeInst)                     \
       macro(ReturnInst)                     \
@@ -2230,6 +2229,10 @@ LLVM_C_ABI LLVMBool LLVMIsPoison(LLVMValueRef Val);
   LLVM_C_ABI LLVMValueRef LLVMIsA##name(LLVMValueRef Val);
 LLVM_FOR_EACH_VALUE_SUBCLASS(LLVM_DECLARE_VALUE_CAST)
 
+LLVM_C_ABI LLVM_ATTRIBUTE_C_DEPRECATED(
+    LLVMValueRef LLVMIsABranchInst(LLVMValueRef Val),
+    "Use LLVMIsAUncondBrInst/LLVMIsACondBrInst instead");
+
 LLVM_C_ABI LLVMValueRef LLVMIsAMDNode(LLVMValueRef Val);
 LLVM_C_ABI LLVMValueRef LLVMIsAValueAsMetadata(LLVMValueRef Val);
 LLVM_C_ABI LLVMValueRef LLVMIsAMDString(LLVMValueRef Val);
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index 3e5e07416ec2..a4e03de7b615 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -1169,10 +1169,13 @@ LLVMInstructionGetAllMetadataOtherThanDebugLoc(LLVMValueRef Value,
     return wrap(static_cast<Value*>(dyn_cast_or_null<name>(unwrap(Val)))); \
   }
 
-// Suppress warning for BranchInst.
-LLVM_SUPPRESS_DEPRECATED_DECLARATIONS_PUSH
 LLVM_FOR_EACH_VALUE_SUBCLASS(LLVM_DEFINE_VALUE_CAST)
-LLVM_SUPPRESS_DEPRECATED_DECLARATIONS_POP
+
+LLVMValueRef LLVMIsABranchInst(LLVMValueRef Val) {
+  if (Value *V = unwrap(Val))
+    return isa<UncondBrInst, CondBrInst>(V) ? Val : nullptr;
+  return nullptr;
+}
 
 LLVMValueRef LLVMIsAMDNode(LLVMValueRef Val) {
   if (auto *MD = dyn_cast_or_null<MetadataAsValue>(unwrap(Val)))