Jakob Stoklund Olesen 7739cad69d Add a new kind of MachineOperand: MO_RegisterMask. ...

Register masks will be used as a compact representation of large clobber
lists.  Currently, an x86 call instruction has some 40 operands
representing call-clobbered registers.  That's more than 1kB of useless
operands per call site.

A register mask operand references a bit mask of call-preserved
registers, everything else is clobbered.  The bit mask will typically
come from TargetRegisterInfo::getCallPreservedMask().

By abandoning ImplicitDefs for call-clobbered registers, it also becomes
possible to share call instruction descriptions between calling
conventions, and we can get rid of the WINCALL* instructions.

This patch introduces the new operand kind.  Future patches will add
RegMask support to target-independent passes before finally the fixed
clobber lists can be removed from call instruction descriptions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148250 91177308-0d34-0410-b5e6-96231b3b80d8

2012-01-16 19:22:00 +00:00

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CommandGuide

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2012-01-07 04:11:27 +00:00

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CMake.html

There are already problems with building LLVM under VS2005, and it's

2011-11-16 19:52:13 +00:00

CodeGenerator.html

Add a new kind of MachineOperand: MO_RegisterMask.

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Happy new year 2012!

2012-01-01 08:16:56 +00:00

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ExceptionHandling.html

Remove dead llvm.eh.sjlj.dispatchsetup intrinsic.

2011-11-28 19:23:13 +00:00

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GettingStarted.html

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2011-11-15 22:59:54 +00:00

LangRef.html

Try to clarify a little how exception handling works.

2012-01-13 19:59:16 +00:00

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2012-01-05 08:18:41 +00:00

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llvm-build: Switch to using the common subdirectory list instead of

2011-12-12 22:45:59 +00:00

LLVMBuild.txt

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2011-12-12 19:48:00 +00:00

Makefile

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ProgrammersManual.html

add ImmutableSet/Map dox, patch by Caitlin Sadowski!

2011-11-15 22:40:14 +00:00

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ReleaseNotes.html

Add a new kind of MachineOperand: MO_RegisterMask.

2012-01-16 19:22:00 +00:00

SegmentedStacks.html

Release notes for segmented stacks.

2011-11-29 19:08:23 +00:00

SourceLevelDebugging.html

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2012-01-03 18:38:37 +00:00

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TestingGuide.html

Update the docs for some of the test-suite configure changes and

2011-11-29 19:40:56 +00:00

WritingAnLLVMBackend.html

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WritingAnLLVMPass.html

Revert r146041 et al. The FunctionPass doesn't take an address but the ID.

2011-12-09 19:11:02 +00:00