From e452b171306ac255dedc46a49defc866a65184c6 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 5 Oct 2010 19:42:57 +0000
Subject: [PATCH] Add support for a fill value in the .zero directive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115655 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/MC/MCParser/AsmParser.cpp | 9 ++++++++-
 test/MC/ELF/zero.s            | 5 +++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 974e4ab0a64..e627ebb96fa 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -1498,12 +1498,19 @@ bool AsmParser::ParseDirectiveZero() {
   if (ParseAbsoluteExpression(NumBytes))
     return true;
 
+  int64_t Val = 0;
+  if (getLexer().is(AsmToken::Comma)) {
+    Lex();
+    if (ParseAbsoluteExpression(Val))
+      return true;
+  }
+
   if (getLexer().isNot(AsmToken::EndOfStatement))
     return TokError("unexpected token in '.zero' directive");
 
   Lex();
 
-  getStreamer().EmitFill(NumBytes, 0, DEFAULT_ADDRSPACE);
+  getStreamer().EmitFill(NumBytes, Val, DEFAULT_ADDRSPACE);
 
   return false;
 }
diff --git a/test/MC/ELF/zero.s b/test/MC/ELF/zero.s
index 2ad21e60815..a7518e1e4fd 100644
--- a/test/MC/ELF/zero.s
+++ b/test/MC/ELF/zero.s
@@ -1,15 +1,16 @@
 // RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump  --dump-section-data | FileCheck %s
 
 .zero 4
+.zero 1,42
 
 // CHECK: ('sh_name', 1) # '.text'
 // CHECK: ('sh_type', 1)
 // CHECK: ('sh_flags', 6)
 // CHECK: ('sh_addr', 0)
 // CHECK: ('sh_offset', 64)
-// CHECK: ('sh_size', 4)
+// CHECK: ('sh_size', 5)
 // CHECK: ('sh_link', 0)
 // CHECK: ('sh_info', 0)
 // CHECK: ('sh_addralign', 4)
 // CHECK: ('sh_entsize', 0)
-// CHECK: ('_section_data', '00000000')
+// CHECK: ('_section_data', '00000000 2a')