[𝘀𝗽𝗿] changes introduced through rebase

Created using spr 1.3.6-beta.1

[skip ci]

Author: Prabhuk

llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp

@@ -4111,6 +4111,11 @@ Instruction *InstCombinerImpl::visitCallBase(CallBase &Call) {
             Call, Builder.CreateBitOrPointerCast(ReturnedArg, CallTy));
     }
 
+  // Drop unnecessary callee_type metadata from calls that were converted
+  // into direct calls.
+  if (Call.getMetadata(LLVMContext::MD_callee_type) && !Call.isIndirectCall())
+    Call.setMetadata(LLVMContext::MD_callee_type, nullptr);
+
   // Drop unnecessary kcfi operand bundles from calls that were converted
   // into direct calls.
   auto Bundle = Call.getOperandBundle(LLVMContext::OB_kcfi);

llvm/test/Transforms/InstCombine/callee-type-metadata.ll

@@ -0,0 +1,25 @@
+;; Test if the callee_type metadata is dropped when an indirect function call through a function ptr is promoted
+;; to a direct function call during instcombine.
+
+; RUN: opt < %s -O2 | llvm-dis | FileCheck %s
+
+define dso_local noundef i32 @_Z13call_indirectPFicEc(ptr noundef %func, i8 noundef signext %x) local_unnamed_addr !type !0 {
+entry:
+  %call = call noundef i32 %func(i8 noundef signext %x), !callee_type !1
+  ret i32 %call
+}
+
+define dso_local noundef i32 @_Z3barv() local_unnamed_addr !type !3 {
+entry:
+  ; CHECK: %call.i = tail call noundef i32 @_Z3fooc(i8 noundef signext 97)
+  ; CHECK-NOT: %call.i = tail call noundef i32 @_Z3fooc(i8 noundef signext 97), !callee_type !1
+  %call = call noundef i32 @_Z13call_indirectPFicEc(ptr noundef nonnull @_Z3fooc, i8 noundef signext 97)
+  ret i32 %call
+}
+
+declare !type !2 noundef i32 @_Z3fooc(i8 noundef signext)
+
+!0 = !{i64 0, !"_ZTSFiPvcE.generalized"}
+!1 = !{!2}
+!2 = !{i64 0, !"_ZTSFicE.generalized"}
+!3 = !{i64 0, !"_ZTSFivE.generalized"}