[ms-inline asm] Refactor code. No functional change intended.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162568 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index 6b14ae5..ec9b4c4 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -20,6 +20,7 @@
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/Basic/TargetInfo.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
@@ -547,6 +548,26 @@
return diag::err_asm_invalid_escape;
}
}
+/// GenerateAsmString - Assemble final asm string.
+std::string AsmStmt::GenerateAsmString(ASTContext &C) const {
+ // Analyze the asm string to decompose it into its pieces. We know that Sema
+ // has already done this, so it is guaranteed to be successful.
+ SmallVector<AsmStmt::AsmStringPiece, 4> Pieces;
+ unsigned DiagOffs;
+ AnalyzeAsmString(Pieces, C, DiagOffs);
+
+ std::string AsmString;
+ for (unsigned i = 0, e = Pieces.size(); i != e; ++i) {
+ if (Pieces[i].isString())
+ AsmString += Pieces[i].getString();
+ else if (Pieces[i].getModifier() == '\0')
+ AsmString += '$' + llvm::utostr(Pieces[i].getOperandNo());
+ else
+ AsmString += "${" + llvm::utostr(Pieces[i].getOperandNo()) + ':' +
+ Pieces[i].getModifier() + '}';
+ }
+ return AsmString;
+}
Expr *MSAsmStmt::getOutputExpr(unsigned i) {
return cast<Expr>(Exprs[i]);