diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1151,16 +1151,19 @@
   OutStreamer->emitSymbolValue(FunctionSymbol, getPointerSize());
   // Emit the total number of basic blocks in this function.
   OutStreamer->emitULEB128IntValue(MF.size());
+  const MCSymbol *PrevMBBEndSymbol = FunctionSymbol;
   // Emit BB Information for each basic block in the funciton.
   for (const MachineBasicBlock &MBB : MF) {
     const MCSymbol *MBBSymbol =
         MBB.isEntryBlock() ? FunctionSymbol : MBB.getSymbol();
-    // Emit the basic block offset.
-    emitLabelDifferenceAsULEB128(MBBSymbol, FunctionSymbol);
+    // Emit the basic block offset relative to the end of the previous block.
+    // This is zero unless the block is padded due to alignment.
+    emitLabelDifferenceAsULEB128(MBBSymbol, PrevMBBEndSymbol);
     // Emit the basic block size. When BBs have alignments, their size cannot
     // always be computed from their offsets.
     emitLabelDifferenceAsULEB128(MBB.getEndSymbol(), MBBSymbol);
     OutStreamer->emitULEB128IntValue(getBBAddrMapMetadata(MBB));
+    PrevMBBEndSymbol = MBB.getEndSymbol();
   }
   OutStreamer->PopSection();
 }
diff --git a/llvm/lib/CodeGen/BasicBlockSections.cpp b/llvm/lib/CodeGen/BasicBlockSections.cpp
--- a/llvm/lib/CodeGen/BasicBlockSections.cpp
+++ b/llvm/lib/CodeGen/BasicBlockSections.cpp
@@ -48,7 +48,7 @@
 // Basic Block Labels
 // ==================
 //
-// With -fbasic-block-sections=labels, we emit the offsets of BB addresses of
+// With -fbasic-block-sections=labels, we encode the offsets of BB addresses of
 // every function into the .llvm_bb_addr_map section. Along with the function
 // symbols, this allows for mapping of virtual addresses in PMU profiles back to
 // the corresponding basic blocks. This logic is implemented in AsmPrinter. This
diff --git a/llvm/test/CodeGen/X86/basic-block-sections-labels.ll b/llvm/test/CodeGen/X86/basic-block-sections-labels.ll
--- a/llvm/test/CodeGen/X86/basic-block-sections-labels.ll
+++ b/llvm/test/CodeGen/X86/basic-block-sections-labels.ll
@@ -51,12 +51,12 @@
 ; CHECK-NEXT:	.uleb128 .Lfunc_begin0-.Lfunc_begin0
 ; CHECK-NEXT:	.uleb128 .LBB_END0_0-.Lfunc_begin0
 ; CHECK-NEXT:	.byte	8
-; CHECK-NEXT:	.uleb128 .LBB0_1-.Lfunc_begin0
+; CHECK-NEXT:	.uleb128 .LBB0_1-.LBB_END0_0
 ; CHECK-NEXT:	.uleb128 .LBB_END0_1-.LBB0_1
 ; CHECK-NEXT:	.byte	8
-; CHECK-NEXT:	.uleb128 .LBB0_2-.Lfunc_begin0
+; CHECK-NEXT:	.uleb128 .LBB0_2-.LBB_END0_1
 ; CHECK-NEXT:	.uleb128 .LBB_END0_2-.LBB0_2
 ; CHECK-NEXT:	.byte	1
-; CHECK-NEXT:	.uleb128 .LBB0_3-.Lfunc_begin0
+; CHECK-NEXT:	.uleb128 .LBB0_3-.LBB_END0_2
 ; CHECK-NEXT:	.uleb128 .LBB_END0_3-.LBB0_3
 ; CHECK-NEXT:	.byte	5
diff --git a/llvm/test/tools/llvm-readobj/ELF/bb-addr-map.test b/llvm/test/tools/llvm-readobj/ELF/bb-addr-map.test
--- a/llvm/test/tools/llvm-readobj/ELF/bb-addr-map.test
+++ b/llvm/test/tools/llvm-readobj/ELF/bb-addr-map.test
@@ -30,7 +30,7 @@
 # LLVM-NEXT:         CanFallThrough: No
 # LLVM-NEXT:       }
 # LLVM-NEXT:       {
-# LLVM-NEXT:         Offset: 0x3
+# LLVM-NEXT:         Offset: 0x4
 # LLVM-NEXT:         Size: 0x4
 # LLVM-NEXT:         HasReturn: Yes
 # LLVM-NEXT:         HasTailCall: No
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -6840,10 +6840,13 @@
       W.printString("Name", FuncName);
 
       ListScope L(W, "BB entries");
+      uint32_t FunctionRelativeAddress = 0;
       for (const typename Elf_BBAddrMap::BBEntry &BBE : AM.BBEntries) {
         DictScope L(W);
-        W.printHex("Offset", BBE.Offset);
+        FunctionRelativeAddress += BBE.Offset;
+        W.printHex("Offset", FunctionRelativeAddress);
         W.printHex("Size", BBE.Size);
+        FunctionRelativeAddress += BBE.Size;
         W.printBoolean("HasReturn", BBE.HasReturn);
         W.printBoolean("HasTailCall", BBE.HasTailCall);
         W.printBoolean("IsEHPad", BBE.IsEHPad);