Author: rnk
Date: Tue Dec 6 18:17:18 2016
New Revision: 288868
URL: http://llvm.org/viewvc/llvm-project?rev=288868&view=rev
Log:
Address review feedback by adding comments about ${:uid}
Modified:
cfe/trunk/lib/Sema/SemaStmtAsm.cpp
Modified: cfe/trunk/lib/Sema/SemaStmtAsm.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaStmtAsm.cpp?rev=288868&r1=288867&r2=288868&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaStmtAsm.cpp (original)
+++ cfe/trunk/lib/Sema/SemaStmtAsm.cpp Tue Dec 6 18:17:18 2016
@@ -750,9 +750,11 @@ LabelDecl *Sema::GetOrCreateMSAsmLabel(S
// Otherwise, insert it, but only resolve it if we have seen the label
itself.
std::string InternalName;
llvm::raw_string_ostream OS(InternalName);
- // Create an internal name for the label. The name should not be a valid
mangled
- // name, and should be unique. We use a dot to make the name an invalid
mangled
- // name.
+ // Create an internal name for the label. The name should not be a valid
+ // mangled name, and should be unique. We use a dot to make the name an
+ // invalid mangled name. We use LLVM's inline asm ${:uid} escape so that a
+ // unique label is generated each time this blob is emitted, even after
+ // inlining or LTO.
OS << "__MSASMLABEL_.${:uid}__";
for (char C : ExternalLabelName) {
OS << C;
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