Evan Cheng 276b77e66c Teach spiller to unfold instructions which modref spill slot when a scratch ... register is available and when it's profitable. e.g. xorq %r12<kill>, %r13 addq %rax, -184(%rbp) addq %r13, -184(%rbp) ==> xorq %r12<kill>, %r13 movq -184(%rbp), %r12 addq %rax, %r12 addq %r13, %r12 movq %r12, -184(%rbp) Two more instructions, but fewer memory accesses. It can also open up opportunities for more optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69341 91177308-0d34-0410-b5e6-96231b3b80d8		2009-04-17 01:29:40 +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
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	Teach spiller to unfold instructions which modref spill slot when a scratch	2009-04-17 01:29:40 +00:00
XCore