X86-Darwin: start emitting data-region directives for jump-tables.

The surrounding tools can cope these days, and they were invented for a reason.

llvm-svn: 268437

llvm/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp

@@ -39,7 +39,7 @@ RelaxELFRel("relax-relocations", cl::init(false),
   cl::desc("Emit R_X86_64_GOTPCRELX instead of R_X86_64_GOTPCREL"));
 
 static cl::opt<bool>
-MarkedJTDataRegions("mark-data-regions", cl::init(false),
+MarkedJTDataRegions("mark-data-regions", cl::init(true),
   cl::desc("Mark code section jump table data regions."),
   cl::Hidden);
 

llvm/test/CodeGen/X86/global-sections.ll

@@ -93,11 +93,13 @@ bb7:
 ; DARWIN64: Lfunc_end
 ; DARWIN64-NEXT: .cfi_endproc
 ; DARWIN64-NOT: .section
+; DARWIN64: .data_region jt32
 ; DARWIN64: LJTI{{.*}}:
 ; DARWIN64-NEXT: .long
 ; DARWIN64-NEXT: .long
 ; DARWIN64-NEXT: .long
 ; DARWIN64-NEXT: .long
+; DARWIN64-NEXT: .end_data_region
 ; DARWIN64-NEXT: .section        __TEXT,__gcc_except_tab
 
 ; int G1;

llvm/test/CodeGen/X86/pic_jumptable.ll

@@ -3,7 +3,7 @@
 ; RUN: llc < %s -relocation-model=pic -mark-data-regions -mtriple=i686-apple-darwin -asm-verbose=false \
 ; RUN:   | FileCheck %s --check-prefix=CHECK-DATA
 ; RUN: llc < %s -relocation-model=pic -mtriple=i686-apple-darwin -asm-verbose=false \
-; RUN:   | FileCheck %s
+; RUN:   | FileCheck %s --check-prefix=CHECK-DATA
 ; RUN: llc < %s                       -mtriple=x86_64-apple-darwin | not grep 'lJTI'
 ; rdar://6971437
 ; rdar://7738756