[C API] Add getters and build function for CallBr (#91154)

This adds LLVMBuildCallBr to create CallBr instructions, and getters for
the CallBr-specific data. The remainder of its data, e.g.
arguments/function, can be accessed using existing getters.

1 files changed, 40 insertions, 0 deletions

diff --git a/llvm/tools/llvm-c-test/echo.cpp b/llvm/tools/llvm-c-test/echo.cpp
index 3478636..5187161 100644
--- a/llvm/tools/llvm-c-test/echo.cpp
+++ b/llvm/tools/llvm-c-test/echo.cpp
@@ -570,6 +570,46 @@ struct FunCloner {
           LLVMDisposeOperandBundle(Bundle);
         break;
       }
+      case LLVMCallBr: {
+        LLVMTypeRef FnTy = CloneType(LLVMGetCalledFunctionType(Src));
+        LLVMValueRef Fn = CloneValue(LLVMGetCalledValue(Src));
+
+        LLVMBasicBlockRef DefaultDest =
+            DeclareBB(LLVMGetCallBrDefaultDest(Src));
+
+        // Clone indirect destinations
+        SmallVector<LLVMBasicBlockRef, 8> IndirectDests;
+        unsigned IndirectDestCount = LLVMGetCallBrNumIndirectDests(Src);
+        for (unsigned i = 0; i < IndirectDestCount; ++i)
+          IndirectDests.push_back(DeclareBB(LLVMGetCallBrIndirectDest(Src, i)));
+
+        // Clone input arguments
+        SmallVector<LLVMValueRef, 8> Args;
+        unsigned ArgCount = LLVMGetNumArgOperands(Src);
+        for (unsigned i = 0; i < ArgCount; ++i)
+          Args.push_back(CloneValue(LLVMGetOperand(Src, i)));
+
+        // Clone operand bundles
+        SmallVector<LLVMOperandBundleRef, 8> Bundles;
+        unsigned BundleCount = LLVMGetNumOperandBundles(Src);
+        for (unsigned i = 0; i < BundleCount; ++i) {
+          auto Bundle = LLVMGetOperandBundleAtIndex(Src, i);
+          Bundles.push_back(CloneOB(Bundle));
+          LLVMDisposeOperandBundle(Bundle);
+        }
+
+        Dst = LLVMBuildCallBr(Builder, FnTy, Fn, DefaultDest,
+                              IndirectDests.data(), IndirectDests.size(),
+                              Args.data(), Args.size(), Bundles.data(),
+                              Bundles.size(), Name);
+
+        CloneAttrs(Src, Dst);
+
+        for (auto Bundle : Bundles)
+          LLVMDisposeOperandBundle(Bundle);
+
+        break;
+      }
       case LLVMUnreachable:
         Dst = LLVMBuildUnreachable(Builder);
         break;