Don't produce a __debug_frame.

I tested both gdb on a bootstrapped clang and and the gdb testsuite on OS X (snow leopard)
and both are happy using __eh_frame.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130937 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp
index c6d6c1b21340071709fda679f23e7fb0ebd3bc4c..5bb380399f958d34ef946f715f9e58eefc4b30b9 100644 (file)
--- a/lib/MC/MCAsmInfo.cpp
+++ b/lib/MC/MCAsmInfo.cpp
@@ -74,7 +74,7 @@ MCAsmInfo::MCAsmInfo() {
   HasLEB128 = false;
   SupportsDebugInformation = false;
   ExceptionsType = ExceptionHandling::None;
-  DwarfRequiresFrameSection = true;
+  DwarfRequiresFrameSection = false;
   DwarfUsesInlineInfoSection = false;
   DwarfRequiresRelocationForStmtList = true;
   DwarfSectionOffsetDirective = 0;

diff --git a/test/CodeGen/X86/empty-functions.ll b/test/CodeGen/X86/empty-functions.ll
index b303cd1f736810b282ef87a1775c0032fadad52f..3434133753bbbb89d8390df554d9e7074d6439d0 100644 (file)
--- a/test/CodeGen/X86/empty-functions.ll
+++ b/test/CodeGen/X86/empty-functions.ll
@@ -6,10 +6,24 @@ entry:
   unreachable
 }
 ; CHECK-NO-FP:     _func:
-; CHECK-NO-FP-NOT: movq %rsp, %rbp
+; CHECK-NO-FP-NEXT: :
+; CHECK-NO-FP-NEXT: .cfi_startproc
 ; CHECK-NO-FP:     nop
+; CHECK-NO-FP-NEXT: :
+; CHECK-NO-FP-NEXT: .cfi_endproc
 
 ; CHECK-FP:      _func:
-; CHECK-FP:      movq %rsp, %rbp
-; CHECK-FP-NEXT: Ltmp1:
-; CHECK-FP:      nop
+; CHECK-FP-NEXT: :
+; CHECK-FP-NEXT: .cfi_startproc
+; CHECK-FP-NEXT: :
+; CHECK-FP-NEXT: pushq %rbp
+; CHECK-FP-NEXT: :
+; CHECK-FP-NEXT: .cfi_def_cfa_offset 16
+; CHECK-FP-NEXT: :
+; CHECK-FP-NEXT: .cfi_offset 6, -16
+; CHECK-FP-NEXT: movq %rsp, %rbp
+; CHECK-FP-NEXT: :
+; CHECK-FP-NEXT: .cfi_def_cfa_register 6
+; CHECK-FP-NEXT: nop
+; CHECK-FP-NEXT: :
+; CHECK-FP-NEXT: .cfi_endproc