[MC] Allow .org directives in SHT_NOBITS sections

This is used by kvm-unit-tests and can be trivially supported.

llvm/lib/MC/MCAssembler.cpp

@@ -754,6 +754,8 @@ void MCAssembler::writeSectionData(raw_ostream &OS, const MCSection *Sec,
         assert((cast<MCFillFragment>(F).getValue() == 0) &&
                "Invalid fill in virtual section!");
         break;
+      case MCFragment::FT_Org:
+        break;
       }
     }
 

llvm/test/MC/ELF/org.s

@@ -1,15 +1,21 @@
-// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -S - | FileCheck %s
+# RUN: llvm-mc -filetype=obj -triple x86_64 %s -o - | llvm-readobj -S - | FileCheck %s --strict-whitespace
 
         .zero 4
 foo:
         .zero 4
         .org foo+16
 
-// CHECK:        Section {
-// CHECK:          Name: .text
-// CHECK-NEXT:     Type:
-// CHECK-NEXT:     Flags [
-// CHECK:          ]
-// CHECK-NEXT:     Address:
-// CHECK-NEXT:     Offset:
-// CHECK-NEXT:     Size: 20
+.bss
+        .zero 1
+# .org is a zero initializer and can appear in a SHT_NOBITS section.
+        .org .bss+5
+
+# CHECK:      Section {
+# CHECK:        Name: .text
+# CHECK:        Size:
+# CHECK-SAME:         {{ 20$}}
+
+# CHECK:      Section {
+# CHECK:        Name: .bss
+# CHECK:        Size:
+# CHECK-SAME:         {{ 5$}}