[llvm] r214538 - Add support for StackMap section for ELF/Linux systems

[Philip Reames]

Author: reames
Date: Fri Aug  1 13:47:09 2014
New Revision: 214538

URL: http://llvm.org/viewvc/llvm-project?rev=214538&view=rev
Log:
Add support for StackMap section for ELF/Linux systems

This patch adds code to emits the StackMap section on ELF systems. This section is required to support llvm.experimental.stackmap and llvm.experimental.patchpoint intrinsics.

Reviewers: ributzka, echristo

Differential Revision: http://reviews.llvm.org/D4574


Modified:
    llvm/trunk/lib/MC/MCObjectFileInfo.cpp
    llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp

Modified: llvm/trunk/lib/MC/MCObjectFileInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCObjectFileInfo.cpp?rev=214538&r1=214537&r2=214538&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MCObjectFileInfo.cpp (original)
+++ llvm/trunk/lib/MC/MCObjectFileInfo.cpp Fri Aug  1 13:47:09 2014
@@ -583,6 +583,12 @@ void MCObjectFileInfo::InitELFMCObjectFi
   DwarfAddrSection =
     Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
+
+  StackMapSection =
+    Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC,
+                       SectionKind::getMetadata());
+
 }
 
 

Modified: llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp?rev=214538&r1=214537&r2=214538&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp Fri Aug  1 13:47:09 2014
@@ -736,6 +736,8 @@ void X86AsmPrinter::EmitEndOfAsmFile(Mod
       }
       Stubs.clear();
     }
+
+    SM.serializeToStackMapSection();
   }
 }