MC: Better handling of tricky symbol and section names

Because of win32 mangling, we produce symbol and section names with
funny characters in them, most notably @ characters.

MC would choke on trying to parse its own assembly output. This patch addresses
that by:

- Making @ trigger quoting of symbol names
- Also quote section names in the same way
- Just parse section names like other identifiers (to allow for quotes)
- Don't assume @ signifies a symbol variant if it is in a string.

Differential Revision: http://llvm-reviews.chandlerc.com/D1945

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192758 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 4 insertions, 4 deletions

diff --git a/test/CodeGen/X86/coff-feat00.ll b/test/CodeGen/X86/coff-feat00.ll
index 1dcd427..c535f793 100644
--- a/test/CodeGen/X86/coff-feat00.ll
+++ b/test/CodeGen/X86/coff-feat00.ll
@@ -4,4 +4,4 @@ define i32 @foo() {
   ret i32 0
 }
 
-; CHECK: @feat.00 = 1
+; CHECK: "@feat.00" = 1
diff --git a/test/CodeGen/X86/fastcall-correct-mangling.ll b/test/CodeGen/X86/fastcall-correct-mangling.ll
index 3569d36..17addbc 100644
--- a/test/CodeGen/X86/fastcall-correct-mangling.ll
+++ b/test/CodeGen/X86/fastcall-correct-mangling.ll
@@ -3,7 +3,7 @@
 ; Check that a fastcall function gets correct mangling
 
 define x86_fastcallcc void @func(i64 %X, i8 %Y, i8 %G, i16 %Z) {
-; CHECK: @func@20:
+; CHECK: "@func@20":
         ret void
 }
 
diff --git a/test/CodeGen/X86/stdcall.ll b/test/CodeGen/X86/stdcall.ll
index 73826ed..34f90c5 100644
--- a/test/CodeGen/X86/stdcall.ll
+++ b/test/CodeGen/X86/stdcall.ll
@@ -5,7 +5,7 @@
 
 define internal x86_stdcallcc void @MyFunc() nounwind {
 entry:
-; CHECK: MyFunc@0:
+; CHECK: "_MyFunc@0":
 ; CHECK: ret
   ret void
 }
@@ -20,5 +20,5 @@ entry:
 
 @B = global %0 { void (...)* bitcast (void ()* @MyFunc to void (...)*) }, align 4
 ; CHECK: _B:
-; CHECK: .long _MyFunc@0
+; CHECK: .long "_MyFunc@0"