[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/testComparesiequll.ll b/llvm/test/CodeGen/PowerPC/testComparesiequll.ll
index 4d90358..f147478 100644
--- a/llvm/test/CodeGen/PowerPC/testComparesiequll.ll
+++ b/llvm/test/CodeGen/PowerPC/testComparesiequll.ll
@@ -12,7 +12,7 @@
 ; Function Attrs: norecurse nounwind readnone
 define signext i32 @test_iequll(i64 %a, i64 %b) {
 ; CHECK-LABEL: test_iequll:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    xor r3, r3, r4
 ; CHECK-NEXT:    cntlzd r3, r3
 ; CHECK-NEXT:    rldicl r3, r3, 58, 63
@@ -26,7 +26,7 @@
 ; Function Attrs: norecurse nounwind readnone
 define signext i32 @test_iequll_sext(i64 %a, i64 %b) {
 ; CHECK-LABEL: test_iequll_sext:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    xor r3, r3, r4
 ; CHECK-NEXT:    addic r3, r3, -1
 ; CHECK-NEXT:    subfe r3, r3, r3
@@ -40,7 +40,7 @@
 ; Function Attrs: norecurse nounwind readnone
 define signext i32 @test_iequll_z(i64 %a) {
 ; CHECK-LABEL: test_iequll_z:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    cntlzd r3, r3
 ; CHECK-NEXT:    rldicl r3, r3, 58, 63
 ; CHECK-NEXT:    blr
@@ -53,7 +53,7 @@
 ; Function Attrs: norecurse nounwind readnone
 define signext i32 @test_iequll_sext_z(i64 %a) {
 ; CHECK-LABEL: test_iequll_sext_z:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    addic r3, r3, -1
 ; CHECK-NEXT:    subfe r3, r3, r3
 ; CHECK-NEXT:    blr
@@ -66,7 +66,7 @@
 ; Function Attrs: norecurse nounwind
 define void @test_iequll_store(i64 %a, i64 %b) {
 ; CHECK-LABEL: test_iequll_store:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    addis r5, r2, .LC0@toc@ha
 ; CHECK-NEXT:    xor r3, r3, r4
 ; CHECK-NEXT:    ld r12, .LC0@toc@l(r5)
@@ -84,7 +84,7 @@
 ; Function Attrs: norecurse nounwind
 define void @test_iequll_sext_store(i64 %a, i64 %b) {
 ; CHECK-LABEL: test_iequll_sext_store:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    addis r5, r2, .LC0@toc@ha
 ; CHECK-NEXT:    xor r3, r3, r4
 ; CHECK-NEXT:    ld r12, .LC0@toc@l(r5)
@@ -102,7 +102,7 @@
 ; Function Attrs: norecurse nounwind
 define void @test_iequll_z_store(i64 %a) {
 ; CHECK-LABEL: test_iequll_z_store:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    addis r4, r2, .LC0@toc@ha
 ; CHECK-NEXT:    cntlzd r3, r3
 ; CHECK-NEXT:    ld r4, .LC0@toc@l(r4)
@@ -119,7 +119,7 @@
 ; Function Attrs: norecurse nounwind
 define void @test_iequll_sext_z_store(i64 %a) {
 ; CHECK-LABEL: test_iequll_sext_z_store:
-; CHECK:       # BB#0: # %entry
+; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    addis r4, r2, .LC0@toc@ha
 ; CHECK-NEXT:    addic r3, r3, -1
 ; CHECK-NEXT:    ld r4, .LC0@toc@l(r4)