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-rw-r--r--lib/CodeGen/AsmPrinter/AsmPrinter.cpp7
-rw-r--r--lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp5
2 files changed, 12 insertions, 0 deletions
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index d6d4510..9453a80 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1082,6 +1082,11 @@ void AsmPrinter::EmitJumpTableInfo() {
EmitAlignment(Log2_32(MJTI->getEntryAlignment(*TM.getTargetData())));
+ // Jump tables in code sections are marked with a data_region directive
+ // where that's supported.
+ if (!JTInDiffSection)
+ OutStreamer.EmitDataRegion(MCDR_DataRegionJT32);
+
for (unsigned JTI = 0, e = JT.size(); JTI != e; ++JTI) {
const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].MBBs;
@@ -1122,6 +1127,8 @@ void AsmPrinter::EmitJumpTableInfo() {
for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
EmitJumpTableEntry(MJTI, JTBBs[ii], JTI);
}
+ if (!JTInDiffSection)
+ OutStreamer.EmitDataRegion(MCDR_DataRegionEnd);
}
/// EmitJumpTableEntry - Emit a jump table entry for the specified MBB to the
diff --git a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
index b0acd7d..16488eb 100644
--- a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
@@ -34,6 +34,10 @@ AsmWriterFlavor("x86-asm-syntax", cl::init(ATT),
clEnumValN(Intel, "intel", "Emit Intel-style assembly"),
clEnumValEnd));
+static cl::opt<bool>
+MarkedJTDataRegions("mark-data-regions", cl::init(false),
+ cl::desc("Mark code section jump table data regions."),
+ cl::Hidden);
void X86MCAsmInfoDarwin::anchor() { }
@@ -59,6 +63,7 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &T) {
SupportsDebugInformation = true;
DwarfUsesInlineInfoSection = true;
+ UseDataRegionDirectives = MarkedJTDataRegions;
// Exceptions handling
ExceptionsType = ExceptionHandling::DwarfCFI;