[cfe-commits] PFR: Share c string literals

[Chris Lattner]

On Nov 24, 2007, at 1:13 PM, Oliver Hunt wrote:

> This patch adds support for sharing literal C strings
> <shared-cstrings.patch>

Looks great, some minor funkiness in indentation here:

+/// CodeGenModule::GetAddrOfConstantString -- returns a pointer to  
the first
+/// element of a character array containing the literal.
+llvm::Constant *CodeGenModule::GetAddrOfConstantString(const  
std::string &str) {
+    llvm::StringMapEntry<llvm::Constant *> &Entry =
+    ConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]);
+
+    if (Entry.getValue())
+        return Entry.getValue();

It looks like you switched to indent-by-4 instead of indent-by-2.


Another thing to consider: do you want to add -fwritable-strings  
support while you're at it?  This basically has two effects: 1) don't  
ever share strings, and 2) don't mark the generated globalvariable as  
constant.

-Chris
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