Remove variable that keeps the size of area used to save byval or variable
argument registers on the callee's stack frame, along with functions that set
and get it.

It is not necessary to add th

Remove variable that keeps the size of area used to save byval or variable
argument registers on the callee's stack frame, along with functions that set
and get it.

It is not necessary to add the size of this area when computing stack size in
emitPrologue, since it has already been accounted for in
PEI::calculateFrameObjectOffsets.

llvm-svn: 144549

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Mips MC object code emission improvements:

"With this patch we can now generate runnable Mips code through LLVM
direct object emission. We have run numerous simple programs, both C
and C++ and with

Mips MC object code emission improvements:

"With this patch we can now generate runnable Mips code through LLVM
direct object emission. We have run numerous simple programs, both C
and C++ and with -O0 and -O3 from the output. The code is not production
ready, but quite useful for experimentation." Patch and message by
Jack Carter

llvm-svn: 144414

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Emit Mips64's sequence of instructions that set global register in prologue.

llvm-svn: 144367

Include RegSaveAreaSize in the computation of stack size.

llvm-svn: 143993

Enclose directive .cprestore with .set macro and nomacro to silence assembler
warning.

llvm-svn: 137378

Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for
better location welcome).

llvm-svn: 135438

Coding style fixes.

- Fix indentation.
- Move comments.
- Fit lines in 80 columns.
- Remove dead code.

llvm-svn: 132724

Add test case for C++ exception handling and fix the following mistakes in MipsFrameLowering::emitPrologue:

- cfi directives are not inserted at the right location or in the right order.
- The sourc

Add test case for C++ exception handling and fix the following mistakes in MipsFrameLowering::emitPrologue:

- cfi directives are not inserted at the right location or in the right order.
- The source MachineLocation for the cfi directive that changes the cfa register
to $fp should be MachineLocation::VirtualFP.
- A PROLOG_LABEL that marks the beginning of cfi_offset directives for
callee-saved register is emitted even when no callee-saved registers are
saved.
- When a callee-saved double precision register is saved, two cfi_offset
directives, one for each of the paired single precision registers, should be
emitted.



llvm-svn: 132703

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Custom-lower FRAMEADDR. Patch by Sasa Stankovic.

llvm-svn: 132444

Use MachineFrameInfo::hasCalls instead of MipsFunctionInfo::hasCall to check if
a function has any function calls.

llvm-svn: 132140

Add support for C++ exception handling.

llvm-svn: 132131

Change initial value of MaxCallFrameSize. MipsFI::getMaxCallFrameSize() should
return 0 if there are no function calls made.

llvm-svn: 132065

Enable printing of immediates that do not fit in 16-bit. .cprestore can have
offsets that are larger than 0x10000.

llvm-svn: 132003

Change StackDirection from StackGrowsUp to StackGrowsDown.

The following improvements are accomplished as a result of applying this patch:
- Fixed frame objects' offsets (relative to either the virt

Change StackDirection from StackGrowsUp to StackGrowsDown.

The following improvements are accomplished as a result of applying this patch:
- Fixed frame objects' offsets (relative to either the virtual frame pointer or
the stack pointer) are set before instruction selection is completed. There is
no need to wait until Prologue/Epilogue Insertion is run to set them.
- Calculation of final offsets of fixed frame objects is straightforward. It is
no longer necessary to assign negative offsets to fixed objects for incoming
arguments in order to distinguish them from the others.
- Since a fixed object has its relative offset set during instruction
selection, there is no need to conservatively set its alignment to 4.
- It is no longer necessary to reorder non-fixed frame objects in
MipsFrameLowering::adjustMipsStackFrame.

llvm-svn: 131915

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Insert instructions that copy $sp to or from $fp at the right locations.

llvm-svn: 131784

Make $fp and $ra callee-saved registers and let PrologEpilogInserter handle
saving and restoring them.

llvm-svn: 131745

Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality.

llvm-svn: 129612

Fix lines that have incorrect indentation or exceed 80 columns. There is no change in functionality.

llvm-svn: 129606

Fix a ton of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129558

Fix indentation.

llvm-svn: 129105

Update ATUsed every time after expandRegLargeImmPair is called.

llvm-svn: 129104

Initialize variable.

llvm-svn: 127038

Expands register/immediate pairs when the immediate is too large to fit in 16-bit field. Patch by Akira Hatanaka

llvm-svn: 127032

Ensure Mips::GP is properly reloaded after a function call. Patch by Sasa Stankovic

llvm-svn: 123768

Teach frame lowering to ignore debug values after the terminators.

llvm-svn: 123399