Generate bitcasts going in and out of MMX parameters

in asm's.  PR 8501, 8602988.
I don't like including Type.h where it is; the idea was
to get references to X86_MMXTy out of the common code.
Maybe there's a better way?



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117736 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 5ed285dcd7..631aa1f33d 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -985,6 +985,9 @@ public:
   }
   virtual bool validateAsmConstraint(const char *&Name,
                                      TargetInfo::ConstraintInfo &info) const;
+  virtual const llvm::Type* adjustInlineAsmType(std::string& Constraint,
+                                     const llvm::Type* Ty,
+                                     llvm::LLVMContext& Context) const;
   virtual std::string convertConstraint(const char Constraint) const;
   virtual const char *getClobbers() const {
     return "~{dirflag},~{fpsr},~{flags}";
@@ -1306,6 +1309,16 @@ X86TargetInfo::validateAsmConstraint(const char *&Name,
   return false;
 }
 
+const llvm::Type*
+X86TargetInfo::adjustInlineAsmType(std::string& Constraint,
+                                   const llvm::Type* Ty,
+                                   llvm::LLVMContext &Context) const {
+  if (Constraint=="y" && Ty->isVectorTy())
+    return llvm::Type::getX86_MMXTy(Context);
+  return Ty;
+}
+
+
 std::string
 X86TargetInfo::convertConstraint(const char Constraint) const {
   switch (Constraint) {