[AMDGPU] Mark .note section SHF_ALLOC so lld creates a segment for it

Differential Revision: https://reviews.llvm.org/D25694


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284435 91177308-0d34-0410-b5e6-96231b3b80d8

Author: kzhuravl

lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp

@@ -97,7 +97,8 @@ void
 AMDGPUTargetELFStreamer::EmitDirectiveHSACodeObjectVersion(uint32_t Major,
                                                            uint32_t Minor) {
   MCStreamer &OS = getStreamer();
-  MCSectionELF *Note = OS.getContext().getELFSection(".note", ELF::SHT_NOTE, 0);
+  MCSectionELF *Note =
+      OS.getContext().getELFSection(".note", ELF::SHT_NOTE, ELF::SHF_ALLOC);
 
   unsigned NameSZ = 4;
 
@@ -120,7 +121,8 @@ AMDGPUTargetELFStreamer::EmitDirectiveHSACodeObjectISA(uint32_t Major,
                                                        StringRef VendorName,
                                                        StringRef ArchName) {
   MCStreamer &OS = getStreamer();
-  MCSectionELF *Note = OS.getContext().getELFSection(".note", ELF::SHT_NOTE, 0);
+  MCSectionELF *Note =
+      OS.getContext().getELFSection(".note", ELF::SHT_NOTE, ELF::SHF_ALLOC);
 
   unsigned NameSZ = 4;
   uint16_t VendorNameSize = VendorName.size() + 1;

test/CodeGen/AMDGPU/hsa.ll

@@ -17,11 +17,16 @@
 ; ELF: }
 
 ; ELF: SHT_NOTE
+; ELF: Flags [ (0x2)
+; ELF: SHF_ALLOC (0x2)
+; ELF: ]
+; ELF: SectionData (
 ; ELF: 0000: 04000000 08000000 01000000 414D4400
 ; ELF: 0010: 02000000 01000000 04000000 1B000000
 ; ELF: 0020: 03000000 414D4400 04000700 07000000
 ; ELF: 0030: 00000000 00000000 414D4400 414D4447
 ; ELF: 0040: 50550000
+; ELF: )
 
 ; ELF: Symbol {
 ; ELF: Name: simple