PR8369: make __attribute((regparm(0))) work correctly. Original patch by

pageexec@freemail.hu, tweaks by me.

llvm-svn: 129206

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGCall.h b/clang/lib/CodeGen/CGCall.h
index fed29a2cf44..f5a84ec99f4 100644
--- a/clang/lib/CodeGen/CGCall.h
+++ b/clang/lib/CodeGen/CGCall.h
@@ -83,6 +83,7 @@ namespace CodeGen {
     ArgInfo *Args;
 
     /// How many arguments to pass inreg.
+    bool HasRegParm;
     unsigned RegParm;
 
   public:
@@ -90,7 +91,7 @@ namespace CodeGen {
     typedef ArgInfo *arg_iterator;
 
     CGFunctionInfo(unsigned CallingConvention, bool NoReturn,
-                   unsigned RegParm, CanQualType ResTy,
+                   bool HasRegParm, unsigned RegParm, CanQualType ResTy,
                    const CanQualType *ArgTys, unsigned NumArgTys);
     ~CGFunctionInfo() { delete[] Args; }
 
@@ -116,6 +117,7 @@ namespace CodeGen {
       EffectiveCallingConvention = Value;
     }
 
+    bool getHasRegParm() const { return HasRegParm; }
     unsigned getRegParm() const { return RegParm; }
 
     CanQualType getReturnType() const { return Args[0].type; }
@@ -126,6 +128,7 @@ namespace CodeGen {
     void Profile(llvm::FoldingSetNodeID &ID) {
       ID.AddInteger(getCallingConvention());
       ID.AddBoolean(NoReturn);
+      ID.AddBoolean(HasRegParm);
       ID.AddInteger(RegParm);
       getReturnType().Profile(ID);
       for (arg_iterator it = arg_begin(), ie = arg_end(); it != ie; ++it)
@@ -139,6 +142,7 @@ namespace CodeGen {
                         Iterator end) {
       ID.AddInteger(Info.getCC());
       ID.AddBoolean(Info.getNoReturn());
+      ID.AddBoolean(Info.getHasRegParm());
       ID.AddInteger(Info.getRegParm());
       ResTy.Profile(ID);
       for (; begin != end; ++begin) {