[CodeGen] Unify MBB reference format in both MIR and debug output

As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
diff --git a/llvm/test/CodeGen/X86/clflushopt-schedule.ll b/llvm/test/CodeGen/X86/clflushopt-schedule.ll
index 3ba02f0..14b4551 100644
--- a/llvm/test/CodeGen/X86/clflushopt-schedule.ll
+++ b/llvm/test/CodeGen/X86/clflushopt-schedule.ll
@@ -7,27 +7,27 @@
 
 define void @clflushopt(i8* %p) nounwind {
 ; GENERIC-LABEL: clflushopt:
-; GENERIC:       # BB#0:
+; GENERIC:       # %bb.0:
 ; GENERIC-NEXT:    clflushopt (%rdi) # sched: [5:1.00]
 ; GENERIC-NEXT:    retq # sched: [1:1.00]
 ;
 ; GLM-LABEL: clflushopt:
-; GLM:       # BB#0:
+; GLM:       # %bb.0:
 ; GLM-NEXT:    clflushopt (%rdi) # sched: [3:1.00]
 ; GLM-NEXT:    retq # sched: [4:1.00]
 ;
 ; SKYLAKE-LABEL: clflushopt:
-; SKYLAKE:       # BB#0:
+; SKYLAKE:       # %bb.0:
 ; SKYLAKE-NEXT:    clflushopt (%rdi) # sched: [2:1.00]
 ; SKYLAKE-NEXT:    retq # sched: [7:1.00]
 ;
 ; SKX-LABEL: clflushopt:
-; SKX:       # BB#0:
+; SKX:       # %bb.0:
 ; SKX-NEXT:    clflushopt (%rdi) # sched: [2:1.00]
 ; SKX-NEXT:    retq # sched: [7:1.00]
 ;
 ; ZNVER1-LABEL: clflushopt:
-; ZNVER1:       # BB#0:
+; ZNVER1:       # %bb.0:
 ; ZNVER1-NEXT:    clflushopt (%rdi) # sched: [8:0.50]
 ; ZNVER1-NEXT:    retq # sched: [1:0.50]
   tail call void @llvm.x86.clflushopt(i8* %p)