InstProfiling: Give the name to profc_bias. NFC. (#95587)

Author: chapuni

llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp

@@ -931,7 +931,7 @@ Value *InstrLowerer::getCounterAddress(InstrProfCntrInstBase *I) {
   if (!BiasLI) {
     IRBuilder<> EntryBuilder(&Fn->getEntryBlock().front());
     auto *Bias = getOrCreateBiasVar(getInstrProfCounterBiasVarName());
-    BiasLI = EntryBuilder.CreateLoad(Int64Ty, Bias);
+    BiasLI = EntryBuilder.CreateLoad(Int64Ty, Bias, "profc_bias");
   }
   auto *Add = Builder.CreateAdd(Builder.CreatePtrToInt(Addr, Int64Ty), BiasLI);
   return Builder.CreateIntToPtr(Add, Addr->getType());

llvm/test/Instrumentation/InstrProfiling/runtime-counter-relocation.ll

@@ -8,16 +8,16 @@ target triple = "x86_64-unknown-linux-gnu"
 ; RELOC: @__llvm_profile_counter_bias = linkonce_odr hidden global i64 0, comdat
 
 ; CHECK-LABEL: define void @foo
-; CHECK-NEXT: %pgocount = load i64, ptr @__profc_foo
-; CHECK-NEXT: %1 = add i64 %pgocount, 1
-; CHECK-NEXT: store i64 %1, ptr @__profc_foo
+; CHECK-NEXT: %[[PGOCOUNT:.+]] = load i64, ptr @__profc_foo
+; CHECK-NEXT: %[[PGOCOUNTINC:.+]] = add i64 %[[PGOCOUNT]], 1
+; CHECK-NEXT: store i64 %[[PGOCOUNTINC]], ptr @__profc_foo
 ; RELOC-LABEL: define void @foo
-; RELOC-NEXT: %1 = load i64, ptr @__llvm_profile_counter_bias
-; RELOC-NEXT: %2 = add i64 ptrtoint (ptr @__profc_foo to i64), %1
-; RELOC-NEXT: %3 = inttoptr i64 %2 to ptr
-; RELOC-NEXT: %pgocount = load i64, ptr %3
-; RELOC-NEXT: %4 = add i64 %pgocount, 1
-; RELOC-NEXT: store i64 %4, ptr %3
+; RELOC-NEXT: %[[BIAS:.+]] = load i64, ptr @__llvm_profile_counter_bias
+; RELOC-NEXT: %[[PROFC_BIAS:.+]] = add i64 ptrtoint (ptr @__profc_foo to i64), %[[BIAS]]
+; RELOC-NEXT: %[[PROFC_ADDR:.+]] = inttoptr i64 %[[PROFC_BIAS]] to ptr
+; RELOC-NEXT: %[[PGOCOUNT:.+]] = load i64, ptr %[[PROFC_ADDR]]
+; RELOC-NEXT: %[[PGOCOUNTINC:.+]] = add i64 %[[PGOCOUNT]], 1
+; RELOC-NEXT: store i64 %[[PGOCOUNTINC]], ptr %[[PROFC_ADDR]]
 define void @foo() {
   call void @llvm.instrprof.increment(ptr @__profn_foo, i64 0, i32 1, i32 0)
   ret void

llvm/test/Transforms/PGOProfile/counter_promo_with_bias.ll

@@ -6,7 +6,7 @@ target triple = "x86_64-unknown-linux-gnu"
 
 define void @foo(i1 %c) {
 entry:
-; CHECK: %[[BIAS:[0-9]+]] = load i64, ptr @__llvm_profile_counter_bias
+; CHECK: %[[BIAS:.+]] = load i64, ptr @__llvm_profile_counter_bias
   br label %while.cond
 
 while.cond:                                       ; preds = %land.rhs, %while.cond.preheader