[llvm-commits] [llvm-gcc-4.2] r45072 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

[Duncan Sands]

Author: baldrick
Date: Sun Dec 16 09:39:40 2007
New Revision: 45072

URL: http://llvm.org/viewvc/llvm-project?rev=45072&view=rev
Log:
Give calls to inline assembler the nounwind attribute.

Modified:
    llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

Modified: llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp?rev=45072&r1=45071&r2=45072&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp Sun Dec 16 09:39:40 2007
@@ -3289,6 +3289,16 @@
 
//===----------------------------------------------------------------------===//
 
 
+/// Return a ParamAttrsList for the given function return attributes.
+const ParamAttrsList *getReturnAttrs(uint16_t attrs) {
+  if (attrs == ParamAttr::None)
+    return NULL;
+
+  ParamAttrsVector Attrs;
+  Attrs.push_back(ParamAttrsWithIndex::get(0, attrs));
+  return ParamAttrsList::get(Attrs);
+}
+
 /// Reads from register variables are handled by emitting an inline asm node
 /// that copies the value out of the specified register.
 Value *TreeToLLVM::EmitReadOfRegisterVariable(tree decl,
@@ -3307,7 +3317,9 @@
   
   const char *Name = extractRegisterName(decl);
   InlineAsm *IA = InlineAsm::get(FTy, "", "={"+std::string(Name)+"}", false);
-  return Builder.CreateCall(IA, "tmp");
+  CallInst *Call = Builder.CreateCall(IA, "tmp");
+  Call->setParamAttrs(getReturnAttrs(ParamAttr::NoUnwind));
+  return Call;
 }
 
 /// Stores to register variables are handled by emitting an inline asm node
@@ -3324,7 +3336,8 @@
   
   const char *Name = extractRegisterName(decl);
   InlineAsm *IA = InlineAsm::get(FTy, "", "{"+std::string(Name)+"}", true);
-  Builder.CreateCall(IA, RHS);
+  CallInst *Call = Builder.CreateCall(IA, RHS);
+  Call->setParamAttrs(getReturnAttrs(ParamAttr::NoUnwind));
 }
 
 /// ConvertInlineAsmStr - Convert the specified inline asm string to an LLVM
@@ -3747,7 +3760,8 @@
                               ASM_VOLATILE_P(exp) || !ASM_OUTPUTS(exp));   
   CallInst *CV = Builder.CreateCall(Asm, CallOps.begin(), CallOps.end(),
                                     StoreCallResultAddr ? "tmp" : "");
-  
+  CV->setParamAttrs(getReturnAttrs(ParamAttr::NoUnwind));
+
   // If the call produces a value, store it into the destination.
   if (StoreCallResultAddr)
     Builder.CreateStore(CV, StoreCallResultAddr);


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