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  1. Jun 26, 2008
  3. Jun 25, 2008
  5. Jun 24, 2008
  7. Jun 21, 2008
    • Chris Lattner's avatar
      "this patch adds code generation hooks for Objective-C constant strings. It... · 091f698d
      Chris Lattner authored 
      "this patch adds code generation hooks for Objective-C constant strings.  It also modifies Sema so that Objective-C constant strings are treated as untyped objects if the interface for the constant string class can not be found.  This is consistent with Apple GCC.  I thought it was consistent with GNU GCC, since this was causing failures when trying to compile GNUstep with (GNU) GCC, but it appears that this is not the case when attempting to produce a simple test case to demonstrate it.  Possibly there is a way of making the error go away, but I haven't found out what it is yet."

Patch by David Chisnall!

llvm-svn: 52599
      091f698d
    • Chris Lattner's avatar
      Don't add isa with @defs only to work around it in the code generator, patch · c4f38851
      Chris Lattner authored 
      by David Chisnall. 

llvm-svn: 52597
      c4f38851
  9. Jun 19, 2008
  11. Jun 17, 2008
    • Chris Lattner's avatar
      Change self/_cmd to be instances of ImplicitParamDecl instead of ParmVarDecl. · 5696e7ba
      Chris Lattner authored 
      Patch by David Chisnall!

llvm-svn: 52422
      5696e7ba
    • Ted Kremenek's avatar
      This patch is motivated by numerous strict-aliasing warnings when compiling · 08e17118
      Ted Kremenek authored 
      clang as a Release build.

The big change is that all AST nodes (subclasses of Stmt) whose children are
Expr* store their children as Stmt* or arrays of Stmt*. This is to remove
strict-aliasing warnings when using StmtIterator. None of the interfaces of any
of the classes have changed (except those with arg_iterators, see below), as the
accessor methods introduce the needed casts (via cast<>). While this extra
casting may seem cumbersome, it actually adds some important sanity checks
throughout the codebase, as clients using StmtIterator can potentially overwrite
children that are expected to be Expr* with Stmt* (that aren't Expr*). The casts
provide extra sanity checks that are operational in debug builds to catch
invariant violations such as these.

For classes that have arg_iterators (e.g., CallExpr), the definition of
arg_iterator has been replaced. Instead of it being Expr**, it is an actual
class (called ExprIterator) that wraps a Stmt**, and provides the necessary
operators for iteration. The nice thing about this class is that it also uses
cast<> to type-checking, which introduces extra sanity checks throughout the
codebase that are useful for debugging.

A few of the CodeGen functions that use arg_iterator (especially from
OverloadExpr) have been modified to take begin and end iterators instead of a
base Expr** and the number of arguments. This matches more with the abstraction
of iteration. This still needs to be cleaned up a little bit, as clients expect
that ExprIterator is a RandomAccessIterator (which we may or may not wish to
allow for efficiency of representation).

This is a fairly large patch. It passes the tests (except CodeGen/bitfield.c,
which was already broken) on both a Debug and Release build, but it should
obviously be reviewed.

llvm-svn: 52378
      08e17118
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