[llvm] r240613 - Enable StackMap Serialization for COFF

[Swaroop Sridhar]

Author: swaroops
Date: Wed Jun 24 19:28:42 2015
New Revision: 240613

URL: http://llvm.org/viewvc/llvm-project?rev=240613&view=rev
Log:
Enable StackMap Serialization for COFF

Summary

This change turns on the emission of 
__LLVM_Stackmaps section when generating COFF binaries.

Test Plan

Added a scenario to the test case: 
test\CodeGen\X86\statepoint-stackmap-format.ll.

Code Review:

http://reviews.llvm.org/D10680


Modified:
    llvm/trunk/lib/MC/MCObjectFileInfo.cpp
    llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
    llvm/trunk/test/CodeGen/X86/statepoint-stackmap-format.ll

Modified: llvm/trunk/lib/MC/MCObjectFileInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCObjectFileInfo.cpp?rev=240613&r1=240612&r2=240613&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MCObjectFileInfo.cpp (original)
+++ llvm/trunk/lib/MC/MCObjectFileInfo.cpp Wed Jun 24 19:28:42 2015
@@ -733,6 +733,11 @@ void MCObjectFileInfo::initCOFFMCObjectF
       ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
                    COFF::IMAGE_SCN_MEM_WRITE,
       SectionKind::getDataRel());
+	  
+  StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
+                                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                            COFF::IMAGE_SCN_MEM_READ,
+                                        SectionKind::getReadOnly());	
 }
 
 void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,

Modified: llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp?rev=240613&r1=240612&r2=240613&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp Wed Jun 24 19:28:42 2015
@@ -725,6 +725,8 @@ void X86AsmPrinter::EmitEndOfAsmFile(Mod
       for (auto & Symbol : DLLExportedFns)
         GenerateExportDirective(Symbol, /*IsData=*/false);
     }
+
+    SM.serializeToStackMapSection();
   }
 
   if (TT.isOSBinFormatELF()) {

Modified: llvm/trunk/test/CodeGen/X86/statepoint-stackmap-format.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/statepoint-stackmap-format.ll?rev=240613&r1=240612&r2=240613&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/statepoint-stackmap-format.ll (original)
+++ llvm/trunk/test/CodeGen/X86/statepoint-stackmap-format.ll Wed Jun 24 19:28:42 2015
@@ -1,10 +1,11 @@
-; RUN: llc < %s | FileCheck %s
+; RUN: llc < %s -mtriple="x86_64-pc-linux-gnu" | FileCheck %s
+; RUN: llc < %s -mtriple="x86_64-pc-win64-coff" | FileCheck %s
+
 ; This test is a sanity check to ensure statepoints are generating StackMap
 ; sections correctly.  This is not intended to be a rigorous test of the 
 ; StackMap format (see the stackmap tests for that).
 
 target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-pc-linux-gnu"
 
 declare zeroext i1 @return_i1()