handle conditional move instructions:
-- cpMem<->Reg functions now support CC registers (int and FP) correctly.
Also, cpMem<->Reg functions now return a vector of machine instructions.
-- Scratch registers must be explicitly provided to cpMem<->Reg when
needed, since CC regs need one to be copied to/from memory.
-- CC regs are saved to a scratch register instead of stack.
-- All regs used by a instruction are now recorded in MachineInstr::regsUsed,
since regs used to save values *across* an instruction are not obvious
either from the operands or from the LiveVar sets.
-- An (explicit or implicit) operand may now be both a def and a use.
This is needed for conditional move operations.
So an operand may need spill code both before and after the instruction.
Other changes:
-- Added several get{Class,Type} functions.
-- Added unified-to-local register number conversion.
-- class MachineCodeForBasicBlock is now an annotation on BasicBlock.
-- Suggest/Color methods may modify the MachineInstr (and always did),
so don't make that argument const!
-- Caller-saving code doesn't need its special purpose code for
handling CC registers since cpMem<->Reg handle those correctly now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2834 91177308-0d34-0410-b5e6-96231b3b80d8
handle conditional move instructions:
-- cpMem<->Reg functions now support CC registers (int and FP) correctly.
-- Scratch registers must be explicitly provided to cpMem<->Reg when
needed, since CC regs need one to be copied to/from memory.
-- CC regs are saved to a scratch register instead of stack.
-- All regs used by a instruction are now recorded in MachineInstr::regsUsed,
since regs used to save values *across* an instruction are not obvious
either from the operands or from the LiveVar sets.
-- An (explicit or implicit) operand may now be both a def and a use.
This is needed for conditional move operations.
So an operand may need spill code both before and after the instruction.
-- class MachineCodeForBasicBlock is now an annotation on BasicBlock.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2833 91177308-0d34-0410-b5e6-96231b3b80d8
because operands may be modified directly to set register.
Also, class MachineCodeForBasicBlock is now an annotation on BasicBlock.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2832 91177308-0d34-0410-b5e6-96231b3b80d8
so additional dep. edges have to be added.
This was needed to correctly handle conditional move instructions!
MachineCodeForBasicBlock is now an annotation on BasicBlock.
Renamed "earliestForNode" to "earliestReadyTimeForNode".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2826 91177308-0d34-0410-b5e6-96231b3b80d8
May be slightly less efficient but significantly reduces special
cases interfaces in code generation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2649 91177308-0d34-0410-b5e6-96231b3b80d8
array and struct indexes.
Update operand values in CallArgsDescriptor (a new class)
when replacing constant values with immediates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2645 91177308-0d34-0410-b5e6-96231b3b80d8
-- passing FP arguments to functions with more than 6 arguments
-- passing FP arguments to varargs functions
-- passing FP arguments to functions with no prototypes
-- incorrect coloring for CC registers (both int and FP): interferences
were being completely ignored for int CC and were considered but no
spills were marked for fp CC!
Also some code improvements:
-- better interface to generating machine instr for common cases
(many places still need to be updated to use this interface)
-- annotations on MachineInstr to communicate information from
one codegen phase to another (now used to pass information about
CALL/JMPLCALL operands from selection to register allocation)
-- all sizes and offests in class TargetData are uint64_t instead of uint
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2642 91177308-0d34-0410-b5e6-96231b3b80d8
-- correct sign extensions for integer casts and for shift-by-constant
instructions generated for integer multiply
-- passing FP arguments to functions with more than 6 arguments
-- passing FP arguments to varargs functions
-- passing FP arguments to functions with no prototypes
-- incorrect stack frame size when padding a section
-- folding getelementptr operations with mixed array and struct indexes
-- use uint64_t instead of uint for constant offsets in mem operands
-- incorrect coloring for CC registers (both int and FP): interferences
were being completely ignored for int CC and were considered but no
spills were marked for fp CC!
Also some code improvements:
-- better interface to generating machine instr for common cases
(many places still need to be updated to use this interface)
-- annotations on MachineInstr to communicate information from
one codegen phase to another (now used to pass information about
CALL/JMPLCALL operands from selection to register allocation)
-- all sizes and offests in class TargetData are uint64_t instead of uint
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2640 91177308-0d34-0410-b5e6-96231b3b80d8
- Rename runOnMethod to runOnFunction
* Transform getAnalysisUsageInfo into getAnalysisUsage
- Method is now const
- It now takes one AnalysisUsage object to fill in instead of 3 vectors
to fill in
- Pass's now specify which other passes they _preserve_ not which ones
they modify (be conservative!)
- A pass can specify that it preserves all analyses (because it never
modifies the underlying program)
* s/Method/Function/g in other random places as well
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2333 91177308-0d34-0410-b5e6-96231b3b80d8
AddedInstrns sets for the first machine instruction. It is hard
to ensure that the right order is preserved, and sure enough, the
order was broken. Instead, use a separate set for the function entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2318 91177308-0d34-0410-b5e6-96231b3b80d8
to copy the FP arg. to an integer. Necessary so that the
register allocator has two different live ranges for the FP value
and the int. argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2314 91177308-0d34-0410-b5e6-96231b3b80d8
AddedInstrns sets for the first machine instruction. It is hard
to ensure that the right order is preserved, and sure enough, the
order was broken. Instead, use a separate set for the function entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2312 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete the DelaySlotInfo objects created by the SchedulingManager class.
These leaked objects were accounting for 3/4 of the memory leaked by the
backend, so this is a relatively major win.
* Reorganize SchedulingManager::getDelaySlotInfoForInstr so that it has
better code locality (making it easier to read).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2197 91177308-0d34-0410-b5e6-96231b3b80d8
* Move InsertPrologEpilogCode class to PrologEpilogCodeInserter.cpp
-> Among other things, this eliminates the need for the minstrVec static
global array.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2195 91177308-0d34-0410-b5e6-96231b3b80d8
new PrologEpilogCodeInserter.cpp file, and include the bodies of the
GetInstructionsFor(Prolog|Epilog) functions from SparcInstrSelection.cpp
into the class. This eliminates the need for a static global vector of
instructions and a class of errors that is really unneccesary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2194 91177308-0d34-0410-b5e6-96231b3b80d8
the bodies of the GetInstructionsFor(Prolog|Epilog) functions from
SparcInstrSelection.cpp into the class. This eliminates the need for a static
global vector of instructions and a class of errors that is really unneccesary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2193 91177308-0d34-0410-b5e6-96231b3b80d8
because the slot calculator is already part of the VMCore library.
* Rename incorporateMethod and purgeMethod to *Function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2154 91177308-0d34-0410-b5e6-96231b3b80d8
class. The Method class is obsolete (renamed) and all references to it
are being converted over to Function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2144 91177308-0d34-0410-b5e6-96231b3b80d8
