Chris Lattner a30946c576 In SDISel, for targets that support FORMAL_ARGUMENTS nodes, lower this ... node as soon as we create it in SDISel. Previously we would lower it in legalize. The problem with this is that it only exposes the argument loads implied by FORMAL_ARGUMENTs after legalize, so that only dag combine 2 can hack on them. This causes us to miss some optimizations because datatype expansion also happens here. Exposing the loads early allows us to do optimizations on them. For example we now compile arg-cast.ll to: _foo: movl $2147483647, %eax andl 8(%esp), %eax ret where we previously produced: _foo: subl $12, %esp movsd 16(%esp), %xmm0 movsd %xmm0, (%esp) movl $2147483647, %eax andl 4(%esp), %eax addl $12, %esp ret It might also make sense to do this for ISD::CALL nodes, which have implicit stores on many targets. llvm-svn: 47054		2008-02-13 07:39:09 +00:00
..
Alpha	xfail a test	2007-11-28 05:37:13 +00:00
ARM	It's PR1925, not PR1609.	2008-02-06 22:07:17 +00:00
CBackend	CBackend: Implement unaligned load/store.	2008-02-01 21:25:59 +00:00
CellSPU	Overhaul Cell SPU's addressing mode internals so that there are now	2008-01-29 02:16:57 +00:00
Generic	Crashes LegalizeTypes with "Do not know how to	2008-02-04 18:07:02 +00:00
IA64
PowerPC	Add testcase for recent legalizer change	2008-02-13 06:48:40 +00:00
SPARC	Convert tests using "| wc -l | grep ..." to use the count script.	2007-08-15 13:36:28 +00:00
X86	In SDISel, for targets that support FORMAL_ARGUMENTS nodes, lower this	2008-02-13 07:39:09 +00:00