[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/PowerPC/memcmp.ll b/llvm/test/CodeGen/PowerPC/memcmp.ll
index 392be4d..4aa5b40 100644
--- a/llvm/test/CodeGen/PowerPC/memcmp.ll
+++ b/llvm/test/CodeGen/PowerPC/memcmp.ll
@@ -3,7 +3,7 @@
 
 define signext i32 @memcmp8(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
 ; CHECK-LABEL: memcmp8:
-; CHECK:       # BB#0:
+; CHECK:       # %bb.0:
 ; CHECK-NEXT:    ldbrx 3, 0, 3
 ; CHECK-NEXT:    ldbrx 4, 0, 4
 ; CHECK-NEXT:    subfc 5, 3, 4
@@ -23,7 +23,7 @@
 
 define signext i32 @memcmp4(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
 ; CHECK-LABEL: memcmp4:
-; CHECK:       # BB#0:
+; CHECK:       # %bb.0:
 ; CHECK-NEXT:    lwbrx 3, 0, 3
 ; CHECK-NEXT:    lwbrx 4, 0, 4
 ; CHECK-NEXT:    sub 5, 4, 3
@@ -41,7 +41,7 @@
 
 define signext i32 @memcmp2(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
 ; CHECK-LABEL: memcmp2:
-; CHECK:       # BB#0:
+; CHECK:       # %bb.0:
 ; CHECK-NEXT:    lhbrx 3, 0, 3
 ; CHECK-NEXT:    lhbrx 4, 0, 4
 ; CHECK-NEXT:    subf 3, 4, 3
@@ -55,7 +55,7 @@
 
 define signext i32 @memcmp1(i32* nocapture readonly %buffer1, i32* nocapture readonly %buffer2) {
 ; CHECK-LABEL: memcmp1:
-; CHECK:       # BB#0:
+; CHECK:       # %bb.0:
 ; CHECK-NEXT:    lbz 3, 0(3)
 ; CHECK-NEXT:    lbz 4, 0(4)
 ; CHECK-NEXT:    subf 3, 4, 3