Mips specific inline assembler constraint 'R'

'R' An address that can be sued in a non-macro load or store.
This patch includes a positive test case.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176452 91177308-0d34-0410-b5e6-96231b3b80d8
[mips] Print move instructions.

"move $4, $5" is printed instead of "or $4, $5, $zero".



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176455 91177308-0d34-0410-b5e6-96231b3b80d8
Check isDiscardableIfUnused, rather than hasLocalLinkage, when bumping
GlobalValue linkage up to ExternalLinkage in the ExtractGV pass. This
prevents linkonce and linkonce_odr symbols from being DCE'd.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176459 91177308-0d34-0410-b5e6-96231b3b80d8
The current X86 NOP padding uses one long NOP followed by the remainder in
one-byte NOPs.  If the processor actually executes those NOPs, as it sometimes
does with aligned bundling, this can have a performance impact.  From my
micro-benchmarks run on my one machine, a 15-byte NOP followed by twelve
one-byte NOPs is about 20% worse than a 15 followed by a 12.  This patch
changes NOP emission to emit as many 15-byte (the maximum) as possible followed
by at most one shorter NOP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176464 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unused #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176467 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/test/CodeGen/Thumb/iabs.ll: Add explicit -mtriple=thumb-unknown-unknown to appease win32 hosts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176470 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/test/CodeGen/Mips/mips64-f128.ll: Add explicit -mtriple=mips64el-unknown-unknown to appease win32.

FIXME: Is it expected for win32 to affect mips targets?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176471 91177308-0d34-0410-b5e6-96231b3b80d8