When an MMX output variable is tied to the input variable, we have to implicitly

cast the value to x86_mmx. This gives the ASM string the correct call signature.
<rdar://problem/10919182>


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153290 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index e65c5f468f..670167b959 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -1507,6 +1507,11 @@ void CodeGenFunction::EmitAsmStmt(const AsmStmt &S) {
       llvm::Value *Arg = EmitAsmInputLValue(S, Info, Dest, InputExpr->getType(),
                                             InOutConstraints);
 
+      if (llvm::Type* AdjTy =
+            getTargetHooks().adjustInlineAsmType(*this, OutputConstraint,
+                                                 Arg->getType()))
+        Arg = Builder.CreateBitCast(Arg, AdjTy);
+
       if (Info.allowsRegister())
         InOutConstraints += llvm::utostr(i);
       else
@@ -1565,7 +1570,7 @@ void CodeGenFunction::EmitAsmStmt(const AsmStmt &S) {
         }
       }
     }
-    if (llvm::Type* AdjTy = 
+    if (llvm::Type* AdjTy =
               getTargetHooks().adjustInlineAsmType(*this, InputConstraint,
                                                    Arg->getType()))
       Arg = Builder.CreateBitCast(Arg, AdjTy);