Add assert to check if the attributes ZExt/SExt, NoAlias are apply to the

correct type of parameters.

llvm-svn: 37486

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/VMCore/Verifier.cpp b/llvm/lib/VMCore/Verifier.cpp
index 7e92eb303d7..ef7b3f8dbbc 100644
--- a/llvm/lib/VMCore/Verifier.cpp
+++ b/llvm/lib/VMCore/Verifier.cpp
@@ -46,6 +46,7 @@
 #include "llvm/Pass.h"
 #include "llvm/Module.h"
 #include "llvm/ModuleProvider.h"
+#include "llvm/ParameterAttributes.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/InlineAsm.h"
 #include "llvm/Instructions.h"
@@ -358,6 +359,20 @@ void Verifier::visitFunction(Function &F) {
            FT->getNumParams() > 0 && isa<PointerType>(FT->getParamType(0))),
           "Invalid struct-return function!", &F);
 
+  if (const ParamAttrsList *Attrs = FT->getParamAttrs()) {
+    unsigned Idx = 1;
+    for (FunctionType::param_iterator I = FT->param_begin(), 
+         E = FT->param_end(); I != E; ++I, ++Idx) {
+      if (Attrs->paramHasAttr(Idx, ParamAttr::ZExt) ||
+          Attrs->paramHasAttr(Idx, ParamAttr::SExt))
+        Assert1(FT->getParamType(Idx-1)->isInteger(),
+                "Attribute ZExt should only apply to Integer type!", &F);
+      if (Attrs->paramHasAttr(Idx, ParamAttr::NoAlias))
+        Assert1(isa<PointerType>(FT->getParamType(Idx-1)),
+                "Attribute NoAlias should only apply to Pointer type!", &F);
+    }
+  }
+
   // Check that this function meets the restrictions on this calling convention.
   switch (F.getCallingConv()) {
   default: