Evan Cheng 7d6d4b360f Do not fold away subreg_to_reg if the source register has a sub-register index. That means the source register is taking a sub-register of a larger register. e.g. On x86 ... %RAX<def> = ... %RAX<def> = SUBREG_TO_REG 0, %EAX:3<kill>, 3 The first def is defining RAX, not EAX so the top bits were not zero-extended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67511 91177308-0d34-0410-b5e6-96231b3b80d8		2009-03-23 07:19:58 +00:00
..
Alpha
ARM
CBackend
CellSPU	Don't force promotion of return arguments on the callee.	2009-03-17 23:43:59 +00:00
CPP
Generic	LSR shouldn't ever try to hack on integer IV's larger than 64-bits. Right now	2009-03-17 23:58:30 +00:00
IA64
Mips
PowerPC	Added missing support for widening when splitting an unary op (PR3683)	2009-03-18 06:24:04 +00:00
SPARC
X86	Do not fold away subreg_to_reg if the source register has a sub-register index. That means the source register is taking a sub-register of a larger register. e.g. On x86	2009-03-23 07:19:58 +00:00
XCore