From: Sanjiv Gupta <sanjiv.gupta@microchip.com>
Date: Thu, 2 Apr 2009 17:51:27 +0000 (+0000)
Subject: Don't use static globals for params as it confuses the optimzer that their values... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=08ae3de4c90a9c4b79fedf878760144df6758ecc;p=clang

Don't use static globals for params as it confuses the optimzer that their values are never being used in the function.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68328 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index 1277404e16..b8f5ca85cf 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -426,12 +426,6 @@ void CodeGenFunction::EmitParmDecl(const VarDecl &D, llvm::Value *Arg) {
   if (!Ty->isConstantSizeType()) {
     // Variable sized values always are passed by-reference.
     DeclPtr = Arg;
-  } else if (Target.useGlobalsForAutomaticVariables()) {
-    // Targets that don't have stack use global address space for parameters.
-    // Specify external linkage for such globals so that llvm optimizer do
-    // not assume there values initialized as zero.
-    DeclPtr = CreateStaticBlockVarDecl(D, ".arg.",
-                                       llvm::GlobalValue::ExternalLinkage);
   } else {
     // A fixed sized single-value variable becomes an alloca in the entry block.
     const llvm::Type *LTy = ConvertTypeForMem(Ty);