llvm-6502/lib/Target/Mips
Chris Lattner ddf89566a9 This commit changes:
1. Legalize now always promotes truncstore of i1 to i8. 
2. Remove patterns and gunk related to truncstore i1 from targets.
3. Rename the StoreXAction stuff to TruncStoreAction in TLI.
4. Make the TLI TruncStoreAction table a 2d table to handle from/to conversions.
5. Mark a wide variety of invalid truncstores as such in various targets, e.g.
   X86 currently doesn't support truncstore of any of its integer types.
6. Add legalize support for truncstores with invalid value input types.
7. Add a dag combine transform to turn store(truncate) into truncstore when
   safe.

The later allows us to compile CodeGen/X86/storetrunc-fp.ll to:

_foo:
	fldt	20(%esp)
	fldt	4(%esp)
	faddp	%st(1)
	movl	36(%esp), %eax
	fstps	(%eax)
	ret

instead of:

_foo:
	subl	$4, %esp
	fldt	24(%esp)
	fldt	8(%esp)
	faddp	%st(1)
	fstps	(%esp)
	movl	40(%esp), %eax
	movss	(%esp), %xmm0
	movss	%xmm0, (%eax)
	addl	$4, %esp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46140 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17 19:59:44 +00:00
..
Makefile remove attribution from lib Makefiles. 2007-12-29 20:09:26 +00:00
Mips.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
Mips.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsAsmPrinter.cpp Add new shorter predicates for testing machine operands for various types: 2007-12-30 23:10:15 +00:00
MipsCallingConv.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsDelaySlotFiller.cpp rename TargetInstrDescriptor -> TargetInstrDesc. 2008-01-07 07:27:27 +00:00
MipsInstrFormats.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsInstrInfo.cpp rename TargetInstrDescriptor -> TargetInstrDesc. 2008-01-07 07:27:27 +00:00
MipsInstrInfo.h Move even more functionality from MRegisterInfo into TargetInstrInfo. 2008-01-07 01:35:02 +00:00
MipsInstrInfo.td This commit changes: 2008-01-17 19:59:44 +00:00
MipsISelDAGToDAG.cpp Rename SSARegMap -> MachineRegisterInfo in keeping with the idea 2007-12-31 04:13:23 +00:00
MipsISelLowering.cpp This commit changes: 2008-01-17 19:59:44 +00:00
MipsISelLowering.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsMachineFunction.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsRegisterInfo.cpp Move even more functionality from MRegisterInfo into TargetInstrInfo. 2008-01-07 01:35:02 +00:00
MipsRegisterInfo.h Move even more functionality from MRegisterInfo into TargetInstrInfo. 2008-01-07 01:35:02 +00:00
MipsRegisterInfo.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsSchedule.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsSubtarget.cpp Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsSubtarget.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsTargetAsmInfo.cpp Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsTargetAsmInfo.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsTargetMachine.cpp Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
MipsTargetMachine.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00