Add tailcall tests.

Created using spr 1.3.6-beta.1

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/CodeGen/AArch64/callsite-emit-calleetypeid-tailcall.ll

@@ -0,0 +1,19 @@
+;; Tests that call site callee type ids can be extracted and set from
+;; callee_type metadata for indirect tail calls.
+
+;; Verify the exact calleeTypeId value to ensure it is not garbage but the value
+;; computed as the type id from the callee_type metadata.
+; RUN: llc --call-graph-section -mtriple aarch64-linux-gnu < %s -stop-after=finalize-isel -o - | FileCheck %s
+
+define dso_local noundef i32 @_Z13call_indirectPFicEc(ptr noundef readonly captures(none) %func, i8 noundef signext %x) local_unnamed_addr !type !0 {
+entry:
+  ; CHECK: callSites:
+  ; CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs: [], calleeTypeIds:
+  ; CHECK-NEXT: [ 3498816979441845844 ] }
+  %call = tail call noundef i32 %func(i8 noundef signext %x), !callee_type !1
+  ret i32 %call
+}
+
+!0 = !{i64 0, !"_ZTSFiPvcE.generalized"}
+!1 = !{!2}
+!2 = !{i64 0, !"_ZTSFicE.generalized"}

llvm/test/CodeGen/AArch64/call-site-info-typeid.ll renamed to llvm/test/CodeGen/AArch64/callsite-emit-calleetypeid.ll

@@ -0,0 +1,19 @@
+;; Tests that call site callee type ids can be extracted and set from
+;; callee_type metadata for indirect tail calls.
+
+;; Verify the exact calleeTypeId value to ensure it is not garbage but the value
+;; computed as the type id from the callee_type metadata.
+; RUN: llc --call-graph-section -mtriple arm-linux-gnu < %s -stop-after=finalize-isel -o - | FileCheck %s
+
+define dso_local noundef i32 @_Z13call_indirectPFicEc(ptr noundef readonly captures(none) %func, i8 noundef signext %x) local_unnamed_addr !type !0 {
+entry:
+  ; CHECK: callSites:
+  ; CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs: [], calleeTypeIds:
+  ; CHECK-NEXT: [ 3498816979441845844 ] }
+  %call = tail call noundef i32 %func(i8 noundef signext %x), !callee_type !1
+  ret i32 %call
+}
+
+!0 = !{i64 0, !"_ZTSFiPvcE.generalized"}
+!1 = !{!2}
+!2 = !{i64 0, !"_ZTSFicE.generalized"}

llvm/test/CodeGen/ARM/callsite-emit-calleetypeid-tailcall.ll

@@ -13,11 +13,11 @@
 # CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs: []
 
 --- |  
-  declare noundef i32 @_Z4fizzii(i32 noundef %x, i32 noundef %y)
-  
-  declare noundef i32 @_Z4buzzii(i32 noundef %x, i32 noundef %y)
-  
-  define dso_local noundef i32 @_Z3barii(i32 noundef %x, i32 noundef %y) {
+  declare !type !0 noundef i32 @_Z4fizzii(i32 noundef %x, i32 noundef %y)
+
+  declare !type !0 noundef i32 @_Z4buzzii(i32 noundef %x, i32 noundef %y)
+
+  define dso_local noundef i32 @_Z3barii(i32 noundef %x, i32 noundef %y) !type !0 {
   entry:
     %x.addr = alloca i32, align 4
     %y.addr = alloca i32, align 4
@@ -33,7 +33,7 @@
     ret i32 %sub
   }
 
-  define dso_local noundef i32 @_Z3fooii(i32 noundef %x, i32 noundef %y) {
+  define dso_local noundef i32 @_Z3fooii(i32 noundef %x, i32 noundef %y) !type !0 {
   entry:
     %x.addr = alloca i32, align 4
     %y.addr = alloca i32, align 4

llvm/test/CodeGen/ARM/call-site-info-typeid.ll renamed to llvm/test/CodeGen/ARM/callsite-emit-calleetypeid.ll

@@ -0,0 +1,19 @@
+;; Tests that call site callee type ids can be extracted and set from
+;; callee_type metadata for indirect tail calls.
+
+;; Verify the exact calleeTypeId value to ensure it is not garbage but the value
+;; computed as the type id from the callee_type metadata.
+; RUN: llc --call-graph-section -mtriple=mips-linux-gnu < %s -stop-after=finalize-isel -o - | FileCheck %s
+
+define dso_local noundef i32 @_Z13call_indirectPFicEc(ptr noundef readonly captures(none) %func, i8 noundef signext %x) local_unnamed_addr !type !0 {
+entry:
+  ; CHECK: callSites:
+  ; CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs: [], calleeTypeIds:
+  ; CHECK-NEXT: [ 3498816979441845844 ] }
+  %call = tail call noundef i32 %func(i8 noundef signext %x), !callee_type !1
+  ret i32 %call
+}
+
+!0 = !{i64 0, !"_ZTSFiPvcE.generalized"}
+!1 = !{!2}
+!2 = !{i64 0, !"_ZTSFicE.generalized"}

llvm/test/CodeGen/MIR/X86/call-site-info-direct-calls-typeid.mir

@@ -0,0 +1,20 @@
+;; Tests that call site callee type ids can be extracted and set from
+;; callee_type metadata for indirect tail calls.
+
+;; Verify the exact calleeTypeIds value to ensure it is not garbage but the value
+;; computed as the type id from the callee_type operand bundle.
+; RUN: llc --call-graph-section -mtriple riscv64 < %s -stop-after=finalize-isel -o - | FileCheck %s
+; RUN: llc --call-graph-section -mtriple riscv32 < %s -stop-after=finalize-isel -o - | FileCheck %s
+
+define dso_local noundef i32 @_Z13call_indirectPFicEc(ptr noundef readonly captures(none) %func, i8 noundef signext %x) local_unnamed_addr !type !0 {
+entry:
+  ; CHECK: callSites:
+  ; CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs: [], calleeTypeIds:
+  ; CHECK-NEXT: [ 3498816979441845844 ] }
+  %call = tail call noundef i32 %func(i8 noundef signext %x), !callee_type !1
+  ret i32 %call
+}
+
+!0 = !{i64 0, !"_ZTSFiPvcE.generalized"}
+!1 = !{!2}
+!2 = !{i64 0, !"_ZTSFicE.generalized"}