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Enable CFI on OS X.

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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
This commit is contained in:
Rafael Espindola 2011-04-30 22:29:54 +00:00
parent ec7e4fff96
commit 89fc9e8f5e
9 changed files with 27 additions and 17 deletions
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3
lib/MC/MCAsmStreamer.cpp
View File

@ -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,

3
lib/MC/MCMachOStreamer.cpp
View File

@ -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.

2
lib/Target/X86/X86MCAsmInfo.cpp
View File

@ -71,7 +71,7 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
DwarfUsesInlineInfoSection = true;
// Exceptions handling
ExceptionsType = ExceptionHandling::DwarfTable;
ExceptionsType = ExceptionHandling::DwarfCFI;
}
const MCExpr *

2
test/CodeGen/PowerPC/mulhs.ll
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@ -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]

4
test/CodeGen/X86/2007-09-17-ObjcFrameEH.ll
View File

@ -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

2
test/CodeGen/X86/2008-04-02-unnamedEH.ll
View File

@ -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"

4
test/CodeGen/X86/2008-12-12-PrivateEHSymbol.ll
View File

@ -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:

2
test/CodeGen/X86/hidden-vis-pic.ll
View File

@ -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

22
test/CodeGen/X86/personality.ll
View File

@ -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-