Enable CFI on OS X.

Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.

The only two differences I know of are:

* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130623 91177308-0d34-0410-b5e6-96231b3b80d8

9 files changed, 27 insertions, 17 deletions

diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index be7febfb178..9d5a2c48025 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -1070,6 +1070,9 @@ void MCAsmStreamer::Finish() {
   // Dump out the dwarf file & directory tables and line tables.
   if (getContext().hasDwarfFiles() && !UseLoc)
     MCDwarfFileTable::Emit(this);
+
+  if (getNumFrameInfos() && !UseCFI)
+    MCDwarfFrameEmitter::Emit(*this);
 }
 
 MCStreamer *llvm::createAsmStreamer(MCContext &Context,
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
index b5a55a75304..350321b9357 100644
--- a/lib/MC/MCMachOStreamer.cpp
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -377,6 +377,9 @@ void MCMachOStreamer::EmitInstToData(const MCInst &Inst) {
 }
 
 void MCMachOStreamer::Finish() {
+  if (getNumFrameInfos())
+    MCDwarfFrameEmitter::Emit(*this);
+
   // We have to set the fragment atom associations so we can relax properly for
   // Mach-O.
 
diff --git a/lib/Target/X86/X86MCAsmInfo.cpp b/lib/Target/X86/X86MCAsmInfo.cpp
index 23ce3e6c8e2..b5dacc18072 100644
--- a/lib/Target/X86/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/X86MCAsmInfo.cpp
@@ -71,7 +71,7 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
   DwarfUsesInlineInfoSection = true;
 
   // Exceptions handling
-  ExceptionsType = ExceptionHandling::DwarfTable;
+  ExceptionsType = ExceptionHandling::DwarfCFI;
 }
 
 const MCExpr *
diff --git a/test/CodeGen/PowerPC/mulhs.ll b/test/CodeGen/PowerPC/mulhs.ll
index 9ab8d997c0d..5b02e187ae8 100644
--- a/test/CodeGen/PowerPC/mulhs.ll
+++ b/test/CodeGen/PowerPC/mulhs.ll
@@ -5,7 +5,7 @@
 ; RUN: not grep add %t 
 ; RUN: grep mulhw %t | count 1
 
-define i32 @mulhs(i32 %a, i32 %b) {
+define i32 @mulhs(i32 %a, i32 %b) nounwind {
 entry:
         %tmp.1 = sext i32 %a to i64             ; <i64> [#uses=1]
         %tmp.3 = sext i32 %b to i64             ; <i64> [#uses=1]
diff --git a/test/CodeGen/X86/2007-09-17-ObjcFrameEH.ll b/test/CodeGen/X86/2007-09-17-ObjcFrameEH.ll
index c3403a0b4ee..1e43272a84e 100644
--- a/test/CodeGen/X86/2007-09-17-ObjcFrameEH.ll
+++ b/test/CodeGen/X86/2007-09-17-ObjcFrameEH.ll
@@ -1,4 +1,6 @@
-; RUN: llc < %s -march=x86 -mtriple=i686-apple-darwin | grep {isNullOrNil].eh"} | count 2
+; RUN: llc < %s -disable-cfi -march=x86 -mtriple=i686-apple-darwin | grep {isNullOrNil].eh"} | FileCheck %s
+
+; CHECK: "_-[NSString(local) isNullOrNil].eh":
 
 	%struct.NSString = type {  }
 	%struct._objc__method_prototype_list = type opaque
diff --git a/test/CodeGen/X86/2008-04-02-unnamedEH.ll b/test/CodeGen/X86/2008-04-02-unnamedEH.ll
index 27bbbaa2962..ab8ec801b04 100644
--- a/test/CodeGen/X86/2008-04-02-unnamedEH.ll
+++ b/test/CodeGen/X86/2008-04-02-unnamedEH.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s | FileCheck %s
+; RUN: llc < %s -disable-cfi | FileCheck %s
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
 target triple = "i386-apple-darwin8"
 
diff --git a/test/CodeGen/X86/2008-12-12-PrivateEHSymbol.ll b/test/CodeGen/X86/2008-12-12-PrivateEHSymbol.ll
index 0717c207da3..2e278118b7a 100644
--- a/test/CodeGen/X86/2008-12-12-PrivateEHSymbol.ll
+++ b/test/CodeGen/X86/2008-12-12-PrivateEHSymbol.ll
@@ -1,5 +1,5 @@
-; RUN: llc < %s -march=x86-64 -mtriple=x86_64-apple-darwin9 | grep ^__Z1fv.eh
-; RUN: llc < %s -march=x86    -mtriple=i386-apple-darwin9 | grep ^__Z1fv.eh
+; RUN: llc < %s -disable-cfi -march=x86-64 -mtriple=x86_64-apple-darwin9 | grep ^__Z1fv.eh
+; RUN: llc < %s -disable-cfi -march=x86    -mtriple=i386-apple-darwin9 | grep ^__Z1fv.eh
 
 define void @_Z1fv() {
 entry:
diff --git a/test/CodeGen/X86/hidden-vis-pic.ll b/test/CodeGen/X86/hidden-vis-pic.ll
index ba130a2c1c8..217dba6944b 100644
--- a/test/CodeGen/X86/hidden-vis-pic.ll
+++ b/test/CodeGen/X86/hidden-vis-pic.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -mtriple=i386-apple-darwin9 -relocation-model=pic -disable-fp-elim -unwind-tables | FileCheck %s
+; RUN: llc < %s -disable-cfi -mtriple=i386-apple-darwin9 -relocation-model=pic -disable-fp-elim -unwind-tables | FileCheck %s
 
 
 
diff --git a/test/CodeGen/X86/personality.ll b/test/CodeGen/X86/personality.ll
index 705e489eb4c..e952a9bb25a 100644
--- a/test/CodeGen/X86/personality.ll
+++ b/test/CodeGen/X86/personality.ll
@@ -1,5 +1,5 @@
-; RUN: llc < %s -mtriple=x86_64-apple-darwin9 -disable-cgp-branch-opts | FileCheck %s -check-prefix=X64
-; RUN: llc < %s -mtriple=i386-apple-darwin9 -disable-cgp-branch-opts | FileCheck %s -check-prefix=X32
+; RUN: llc < %s -disable-cfi -mtriple=x86_64-apple-darwin9 -disable-cgp-branch-opts | FileCheck %s -check-prefix=X64
+; RUN: llc < %s -disable-cfi -mtriple=i386-apple-darwin9 -disable-cgp-branch-opts | FileCheck %s -check-prefix=X32
 ; PR1632
 
 define void @_Z1fv() {
@@ -38,13 +38,15 @@ declare void @__gxx_personality_v0()
 
 declare void @__cxa_end_catch()
 
-; X64: Leh_frame_common_begin0:
-; X64: .long	___gxx_personality_v0@GOTPCREL+4
+; X64:      zPLR
+; X64:      .byte 155
+; X64-NEXT: .long	___gxx_personality_v0@GOTPCREL+4
 
-; X32: Leh_frame_common_begin0:
-; X32: .long	L___gxx_personality_v0$non_lazy_ptr-
-; ....
+; X32:        .section	__IMPORT,__pointers,non_lazy_symbol_pointers
+; X32-NEXT: L___gxx_personality_v0$non_lazy_ptr:
+; X32-NEXT:   .indirect_symbol ___gxx_personality_v0
 
-; X32: .section	__IMPORT,__pointers,non_lazy_symbol_pointers
-; X32: L___gxx_personality_v0$non_lazy_ptr:
-; X32:   .indirect_symbol ___gxx_personality_v0
+; X32:      zPLR
+; X32:      .byte 155
+; X32-NEXT: :
+; X32-NEXT: .long	L___gxx_personality_v0$non_lazy_ptr-