Dan Gohman 339ffedca9 Don't mark scalar integer multiplication as Expand on x86, since x86 ... has plain one-result scalar integer multiplication instructions. This avoids expanding such instructions into MUL_LOHI sequences that must be special-cased at isel time, and avoids the problem with that code that provented memory operands from being folded. This fixes PR1874, addressesing the most common case. The uncommon cases of optimizing multiply-high operations will require work in DAGCombiner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47277 91177308-0d34-0410-b5e6-96231b3b80d8		2008-02-18 17:55:26 +00:00
..
Alpha	llvm.memory.barrier, and impl for x86 and alpha	2008-02-16 01:24:58 +00:00
ARM	Remove llvm-upgrade.	2008-02-17 20:02:20 +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	Teach LegalizeTypes how to expand and promote CTLZ,	2008-02-13 18:01:53 +00:00
IA64
PowerPC	Add testcase for recent legalizer change	2008-02-13 06:48:40 +00:00
SPARC
X86	Don't mark scalar integer multiplication as Expand on x86, since x86	2008-02-18 17:55:26 +00:00