[ms-inline asm] Add constraints to MSAsmStmt. We don't currently compute

the constraints, so in the interim we speculatively assume a 'r' constraint.
This is expected to work for most cases on x86.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162784 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 17 deletions

diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index 84622658d5..ac432e85a7 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -630,14 +630,6 @@ Expr *MSAsmStmt::getOutputExpr(unsigned i) {
   return cast<Expr>(Exprs[i]);
 }
 
-/// getOutputConstraint - Return the constraint string for the specified
-/// output operand.  All output constraints are known to be non-empty (either
-/// '=' or '+').
-StringRef MSAsmStmt::getOutputConstraint(unsigned i) const {
-  // FIXME: Compute constraints.
-  return StringRef();
-}
-
 Expr *MSAsmStmt::getInputExpr(unsigned i) {
   return cast<Expr>(Exprs[i + NumOutputs]);
 }
@@ -645,13 +637,6 @@ void MSAsmStmt::setInputExpr(unsigned i, Expr *E) {
   Exprs[i + NumOutputs] = E;
 }
 
-/// getInputConstraint - Return the specified input constraint.  Unlike output
-/// constraints, these can be empty.
-StringRef MSAsmStmt::getInputConstraint(unsigned i) const {
-  // FIXME: Compute constraints.
-  return StringRef();
-}
-
 QualType CXXCatchStmt::getCaughtType() const {
   if (ExceptionDecl)
     return ExceptionDecl->getType();
@@ -691,8 +676,8 @@ MSAsmStmt::MSAsmStmt(ASTContext &C, SourceLocation asmloc,
                      ArrayRef<Token> asmtoks, ArrayRef<IdentifierInfo*> inputs,
                      ArrayRef<IdentifierInfo*> outputs,
                      ArrayRef<Expr*> inputexprs, ArrayRef<Expr*> outputexprs,
-                     StringRef asmstr, ArrayRef<StringRef> clobbers,
-                     SourceLocation endloc)
+                     StringRef asmstr, ArrayRef<StringRef> constraints,
+                     ArrayRef<StringRef> clobbers, SourceLocation endloc)
   : AsmStmt(MSAsmStmtClass, asmloc, issimple, isvolatile, outputs.size(), inputs.size(),
             clobbers.size()), LBraceLoc(lbraceloc), EndLoc(endloc),
     AsmStr(asmstr.str()), NumAsmToks(asmtoks.size()) {
@@ -717,6 +702,14 @@ MSAsmStmt::MSAsmStmt(ASTContext &C, SourceLocation asmloc,
   for (unsigned i = 0, e = NumAsmToks; i != e; ++i)
     AsmToks[i] = asmtoks[i];
 
+  Constraints = new (C) StringRef[NumExprs];
+  for (unsigned i = 0, e = NumExprs; i != e; ++i) {
+    size_t size = constraints[i].size();
+    char *dest = new (C) char[size];
+    std::strncpy(dest, constraints[i].data(), size); 
+    Constraints[i] = StringRef(dest, size);
+  }
+
   Clobbers = new (C) StringRef[NumClobbers];
   for (unsigned i = 0, e = NumClobbers; i != e; ++i) {
     // FIXME: Avoid the allocation/copy if at all possible.