[AsmParser] Rename BBs. NFC.

Author: dtcxzyw

llvm/test/Assembler/pr119818.ll

@@ -1,23 +1,23 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
 ; RUN: opt -S < %s | FileCheck %s
 
-@vm_exec_core.insns_address_table = internal constant [2 x ptr] [ptr blockaddress(@vm_exec_core, %2), ptr blockaddress(@vm_exec_core, %.lr.ph.i2526)], align 16
+@vm_exec_core.insns_address_table = internal constant [2 x ptr] [ptr blockaddress(@vm_exec_core, %0), ptr blockaddress(@vm_exec_core, %block)], align 16
 
 define void @vm_exec_core() {
 ; CHECK-LABEL: define void @vm_exec_core() {
 ; CHECK-NEXT:  [[ENTRY:.*:]]
-; CHECK-NEXT:    br [[DOTLR_PH_I2526:label %.*]]
-; CHECK:       [[_LR_PH_I2526:.*:]]
+; CHECK-NEXT:    br label %[[BLOCK:.*]]
+; CHECK:       [[BLOCK]]:
 ; CHECK-NEXT:    br label %[[BB0:.*]]
 ; CHECK:       [[BB0]]:
 ; CHECK-NEXT:    ret void
 ;
 entry:
-  br label %.lr.ph.i2526
+  br label %block
 
-.lr.ph.i2526:
-  br label %2
+block:
+  br label %0
 
-2:
+0:
   ret void
 }