From 10748d8edd16b7052a9a87576f753e6a7aa1aba9 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 27 Apr 2008 23:33:55 +0000
Subject: Allow asms to return multiple results by value.

llvm-svn: 50328
---
 llvm/lib/VMCore/InlineAsm.cpp | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'llvm/lib/VMCore')

diff --git a/llvm/lib/VMCore/InlineAsm.cpp b/llvm/lib/VMCore/InlineAsm.cpp
index e49bb6dc8fb..d563e9557a6 100644
--- a/llvm/lib/VMCore/InlineAsm.cpp
+++ b/llvm/lib/VMCore/InlineAsm.cpp
@@ -202,11 +202,20 @@ bool InlineAsm::Verify(const FunctionType *Ty, const std::string &ConstStr) {
       break;
     }
   }
-    
-  if (NumOutputs > 1) return false;  // Only one result allowed so far.
   
-  if ((Ty->getReturnType() != Type::VoidTy) != NumOutputs)
-    return false;   // NumOutputs = 1 iff has a result type.
+  switch (NumOutputs) {
+  case 0:
+    if (Ty->getReturnType() != Type::VoidTy) return false;
+    break;
+  case 1:
+    if (isa<StructType>(Ty->getReturnType())) return false;
+    break;
+  default:
+    const StructType *STy = dyn_cast<StructType>(Ty->getReturnType());
+    if (STy == 0 || STy->getNumElements() != NumOutputs)
+      return false;
+    break;
+  }      
   
   if (Ty->getNumParams() != NumInputs) return false;
   return true;
-- 
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