Dan Gohman 2d1be87ee4 Expand GEPs in ScalarEvolution expressions. SCEV expressions can now ... have pointer types, though in contrast to C pointer types, SCEV addition is never implicitly scaled. This not only eliminates the need for special code like IndVars' EliminatePointerRecurrence and LSR's own GEP expansion code, it also does a better job because it lets the normal optimizations handle pointer expressions just like integer expressions. Also, since LLVM IR GEPs can't directly index into multi-dimensional VLAs, moving the GEP analysis out of client code and into the SCEV framework makes it easier for clients to handle multi-dimensional VLAs the same way as other arrays. Some existing regression tests show improved optimization. test/CodeGen/ARM/2007-03-13-InstrSched.ll in particular improved to the point where if-conversion started kicking in; I turned it off for this test to preserve the intent of the test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69258 91177308-0d34-0410-b5e6-96231b3b80d8		2009-04-16 03:18:22 +00:00
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Analysis	Expand GEPs in ScalarEvolution expressions. SCEV expressions can now	2009-04-16 03:18:22 +00:00
Archive
AsmParser	Fix warning in .ll parser, detect and reject available_externally on function	2009-04-13 07:02:02 +00:00
Bitcode	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
CodeGen	In -fast mode do what FastISel does.	2009-04-16 02:33:41 +00:00
CompilerDriver	-write-graph now can be used with -o.	2009-03-27 12:57:14 +00:00
Debugger	Oops...I committed too much.	2009-03-13 04:39:26 +00:00
ExecutionEngine	Mac OS X 10.6 and above do not use key manager to register EH frames.	2009-04-14 22:31:59 +00:00
Linker	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
Support	teach EscapeString and UnescapeString to handle ".	2009-04-15 20:12:52 +00:00
System	Call CreateProcess with bInheritHandles = TRUE.	2009-04-14 21:31:36 +00:00
Target	Fix 80-column violations.	2009-04-15 19:48:57 +00:00
Transforms	Expand GEPs in ScalarEvolution expressions. SCEV expressions can now	2009-04-16 03:18:22 +00:00
VMCore	Limit the number of times we're willing to chase pointers. Removes an O(n^2)	2009-04-15 06:23:41 +00:00
Makefile	Reorganize llvmc code.	2009-03-02 09:01:14 +00:00