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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Alpha
ARM	Expand GEPs in ScalarEvolution expressions. SCEV expressions can now	2009-04-16 03:18:22 +00:00
CBackend	Fix PR2907 by digging through constant expressions to find FP constants that	2008-10-22 04:53:16 +00:00
CellSPU	Revert 67132. This is breaking some objective-c apps.	2009-03-25 20:20:11 +00:00
CPP
Generic	Add a new "available_externally" linkage type. This is intended	2009-04-13 05:44:34 +00:00
IA64
Mips
PowerPC	Fix this test so that it doesn't spuriously fail due to some	2009-03-27 16:17:22 +00:00
SPARC
X86	Expand GEPs in ScalarEvolution expressions. SCEV expressions can now	2009-04-16 03:18:22 +00:00
XCore