Under normal circumstances, when a frame pointer is not required, we reserve
argument space for call sites in the function immediately on entry to the
current function. This eliminates the need for add/sub sp brackets around call
sites. However, this is not always a good idea. If the "call frame" is large and
the target load / store instructions have small immediate field to encode sp
offset, this can cause poor codegen. In the worst case, this can make it
impossible to scavenge a register if the reserved spill slot is pushed too far
apart from sp / fp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36607 91177308-0d34-0410-b5e6-96231b3b80d8

Added hook hasReservedCallFrame(). It returns true if the call frame is
included as part of the stack frame.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36606 91177308-0d34-0410-b5e6-96231b3b80d8

Test a dag combiner crasher.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36605 91177308-0d34-0410-b5e6-96231b3b80d8

* Only turn a load to UNDEF if all of its outputs have no uses (indexed loads
  produce two results.)
* Do not touch volatile loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36604 91177308-0d34-0410-b5e6-96231b3b80d8

Implement review feedback.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36603 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1228 and CodeGen/Generic/2007-04-30-LandingPadBranchFolding.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36602 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR1228

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36601 91177308-0d34-0410-b5e6-96231b3b80d8

print isLandingPad() for MBBs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36600 91177308-0d34-0410-b5e6-96231b3b80d8

Continue refactoring inline asm code.  If there is an earlyclobber output
register, preallocate all input registers and the early clobbered output.

This fixes PR1357 and CodeGen/PowerPC/2007-04-30-InlineAsmEarlyClobber.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36599 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR1357

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36598 91177308-0d34-0410-b5e6-96231b3b80d8

Header file for ELF relocations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36597 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36596 91177308-0d34-0410-b5e6-96231b3b80d8

Updates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36594 91177308-0d34-0410-b5e6-96231b3b80d8

refactor GetRegistersForValue to take OpInfo as an argument instead of various
pieces of it.  No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36592 91177308-0d34-0410-b5e6-96231b3b80d8

refactor some code, no functionality change

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36590 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up multi-line asam string printing.  Instead of printing:

        # InlineAsm Start
        subfc r3,r5,r4
                subfze r4,r3
        # InlineAsm End

print:

        # InlineAsm Start
        subfc r3,r5,r4
        subfze r4,r3
        # InlineAsm End

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36589 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo. Interesting, but old variant worked too :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36588 91177308-0d34-0410-b5e6-96231b3b80d8

For PR1370:
Rearrange some tests so that if PowerPC is not being built we don't try to
run PowerPC specific tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36587 91177308-0d34-0410-b5e6-96231b3b80d8

Remove item: thumb padding in constant islands

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36586 91177308-0d34-0410-b5e6-96231b3b80d8

remove unused variable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36585 91177308-0d34-0410-b5e6-96231b3b80d8

If an archive is not recognized as an LLVM bytecode archive then declare
that it is native so that the linker will pass it on downstream. This avoids
a problem where the native link line fails because there is both a .so and
a .a file. The .a file gets processed as bytecode and then dropped from the
command line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36584 91177308-0d34-0410-b5e6-96231b3b80d8

Enable protected visibility on ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36583 91177308-0d34-0410-b5e6-96231b3b80d8

Dependent libraries could be native too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36582 91177308-0d34-0410-b5e6-96231b3b80d8

Augment the verbose output to print out the sub-commands executed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36581 91177308-0d34-0410-b5e6-96231b3b80d8

add some helpers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36580 91177308-0d34-0410-b5e6-96231b3b80d8

Implement much expanded dumper support.  We now print stuff like:

<MODULE_BLOCK NumWords=27 BlockCodeSize=3>
  <TYPE_BLOCK NumWords=7 BlockCodeSize=4>
    <NUMENTRY op0=7>
    <POINTER op0=1>
    <FUNCTION op0=0 op1=2 op2=2 op3=2 op4=2>
    <VECTOR op0=2 op1=3>
    <INTEGER op0=64>
    <VECTOR op0=8 op1=5>
    <INTEGER op0=16>
    <VOID>
...

With work, the operands can be pretty printed symbolically.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36579 91177308-0d34-0410-b5e6-96231b3b80d8

Implement visibility checking during linking. Also implement protected
visibility support for bitcode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36577 91177308-0d34-0410-b5e6-96231b3b80d8

add some simple per-block statistics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36576 91177308-0d34-0410-b5e6-96231b3b80d8

compute this value correctly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36575 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite of Thumb constant islands handling (exact allowance for padding
around islands and jump tables).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36573 91177308-0d34-0410-b5e6-96231b3b80d8

Make ARM-specific version of getInlineAsmLength

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36572 91177308-0d34-0410-b5e6-96231b3b80d8

add a method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36571 91177308-0d34-0410-b5e6-96231b3b80d8

not all targets want to return an i32.  What really matters is whether llc accepts the generated code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36569 91177308-0d34-0410-b5e6-96231b3b80d8

generalize aggregate handling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36568 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36566 91177308-0d34-0410-b5e6-96231b3b80d8

Implement protected visibility. This partly implements PR1363. Linker
should be taught to deal with protected symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36565 91177308-0d34-0410-b5e6-96231b3b80d8

Implement review feedback

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36564 91177308-0d34-0410-b5e6-96231b3b80d8

Jeff's fix was fine

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36563 91177308-0d34-0410-b5e6-96231b3b80d8

add missing ctor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36562 91177308-0d34-0410-b5e6-96231b3b80d8

Fix MemoryBuffer breakage correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36561 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak VC++ build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36560 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36559 91177308-0d34-0410-b5e6-96231b3b80d8

Updated aliases test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36558 91177308-0d34-0410-b5e6-96231b3b80d8

Implement support to read an arbitrary bitcode file.  Next up, dumping the
file symbolically and actually computing statistics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36557 91177308-0d34-0410-b5e6-96231b3b80d8

very early support for analyzing a bitstream.  This opens the file, starts
reading the stream, and detects whether it is LLVM IR or not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36556 91177308-0d34-0410-b5e6-96231b3b80d8

make this file self-contained

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36555 91177308-0d34-0410-b5e6-96231b3b80d8

Switch the bitcode reader interface to take a MemoryBuffer instead of knowing
anything about disk I/O itself.  This greatly simplifies its interface -
eliminating the need for the ReaderWrappers.cpp file.

This adds a new option to llvm-dis (-bitcode) which instructs it to read
the input file as bitcode.  Until/unless the bytecode reader is taught to
read from MemoryBuffer, there is no way to handle stdin reading without it.

I don't plan to switch the bytecode reader over, I'd rather delete it :),
so the option will stay around temporarily.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36554 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new memorybuffer class, to unify all the file reading code in the system

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36553 91177308-0d34-0410-b5e6-96231b3b80d8

new method for creating a path, which does not create a temporary string.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36552 91177308-0d34-0410-b5e6-96231b3b80d8

fit in 80 cols

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36551 91177308-0d34-0410-b5e6-96231b3b80d8

Fix this to use the right block ID

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36550 91177308-0d34-0410-b5e6-96231b3b80d8

moved Writer.cpp -> BitcodeWriter.cpp to make it more unique in the tree.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36549 91177308-0d34-0410-b5e6-96231b3b80d8

Minor corrections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36548 91177308-0d34-0410-b5e6-96231b3b80d8

memory operands that have a direct operand should have their stores created
before the copies into physregs are done.  This avoids having flag operands
skip the store, causing cycles in the dag at sched time.  This fixes infinite
loops on these tests:

test/CodeGen/Generic/2007-04-08-MultipleFrameIndices.ll for PR1308
test/CodeGen/PowerPC/2007-01-29-lbrx-asm.ll
test/CodeGen/PowerPC/2007-01-31-InlineAsmAddrMode.ll
test/CodeGen/X86/2006-07-12-InlineAsmQConstraint.ll for PR828

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36547 91177308-0d34-0410-b5e6-96231b3b80d8

eliminate more redundant constraint type analysis

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36546 91177308-0d34-0410-b5e6-96231b3b80d8

merge constraint type analysis stuff together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36545 91177308-0d34-0410-b5e6-96231b3b80d8

Significant refactoring of the inline asm stuff, to support future changes.
No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36544 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36543 91177308-0d34-0410-b5e6-96231b3b80d8

Revert the premature portion of the last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36542 91177308-0d34-0410-b5e6-96231b3b80d8

This is not "FIXME" anymore

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36541 91177308-0d34-0410-b5e6-96231b3b80d8

Let Verifier check aliasees

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36540 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a compilation error (jump to case label).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36539 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36538 91177308-0d34-0410-b5e6-96231b3b80d8

Implement review feedback. Aliasees can be either GlobalValue's or
bitcasts of them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36537 91177308-0d34-0410-b5e6-96231b3b80d8

memory inputs to an inline asm are required to have an address available.
If the operand is not already an indirect operand, spill it to a constant
pool entry or a stack slot.

This fixes PR1356 and CodeGen/X86/2007-04-27-InlineAsm-IntMemInput.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36536 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for PR1356

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36535 91177308-0d34-0410-b5e6-96231b3b80d8

Fix CodeGen/Generic/2007-04-27-LargeMemObject.ll and
    CodeGen/Generic/2007-04-27-InlineAsm-X-Dest.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36534 91177308-0d34-0410-b5e6-96231b3b80d8

ensure the operand prints.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36533 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36532 91177308-0d34-0410-b5e6-96231b3b80d8

update syntax

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36531 91177308-0d34-0410-b5e6-96231b3b80d8

not fully implemented yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36530 91177308-0d34-0410-b5e6-96231b3b80d8

add a default parameter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36529 91177308-0d34-0410-b5e6-96231b3b80d8

add a way to make this less brittle

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36528 91177308-0d34-0410-b5e6-96231b3b80d8

fix a bug triggered by 403.gcc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36527 91177308-0d34-0410-b5e6-96231b3b80d8

update for new inline asm syntax

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36526 91177308-0d34-0410-b5e6-96231b3b80d8

Fix several latent bugs in EmitGEPOffset that didn't manifest with its
previous clients.  This fixes MallocBench/gs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36525 91177308-0d34-0410-b5e6-96231b3b80d8

Fix this to match change to InlineAsm class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36524 91177308-0d34-0410-b5e6-96231b3b80d8

uhn zap cvs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36523 91177308-0d34-0410-b5e6-96231b3b80d8

represent indirect operands explicitly in inline asm strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36522 91177308-0d34-0410-b5e6-96231b3b80d8

Implement PR1345 and Transforms/InstCombine/bitcast-gep.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36521 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36520 91177308-0d34-0410-b5e6-96231b3b80d8

change per review

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36519 91177308-0d34-0410-b5e6-96231b3b80d8

Prevent Thumb code from generating ARM instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36518 91177308-0d34-0410-b5e6-96231b3b80d8

fix the test tls1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36517 91177308-0d34-0410-b5e6-96231b3b80d8

add TLS tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36516 91177308-0d34-0410-b5e6-96231b3b80d8

add a GEP helper function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36515 91177308-0d34-0410-b5e6-96231b3b80d8

add parenthesis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36514 91177308-0d34-0410-b5e6-96231b3b80d8

Doh. ARM::LEApcrel is a single instruction MI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36513 91177308-0d34-0410-b5e6-96231b3b80d8

In Thumb mode, the frame register must be R7.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36512 91177308-0d34-0410-b5e6-96231b3b80d8

refactor some code relating to pointer cast xforms, pulling it out of the codepath
for unrelated casts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36511 91177308-0d34-0410-b5e6-96231b3b80d8

Fix incorrect legalization of EHSELECTOR.  This fixes
CodeGen/Generic/2007-04-14-EHSelectorCrash.ll and PR1326

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36510 91177308-0d34-0410-b5e6-96231b3b80d8

make this testcase harder, to cover PR1326

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36509 91177308-0d34-0410-b5e6-96231b3b80d8

reset errno to zero on entry to the application's main function.  This fixes
MultiSource/Applications/minisat in the JIT.

Note that the libsystem stuff should ideally never modify errno.  :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36508 91177308-0d34-0410-b5e6-96231b3b80d8

Fix prolific source of 'possible loss of data' warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36507 91177308-0d34-0410-b5e6-96231b3b80d8

ARM TLS: implement "general dynamic", "initial exec" and "local exec" models.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36506 91177308-0d34-0410-b5e6-96231b3b80d8

Darwin runtime library does not have these.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36505 91177308-0d34-0410-b5e6-96231b3b80d8

Special handling of LEApcrel and tLEApcrel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36504 91177308-0d34-0410-b5e6-96231b3b80d8

Back out previous check-in. Incorrect.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36503 91177308-0d34-0410-b5e6-96231b3b80d8

tLEApcrel is a AddrModeTs, i.e. pc relative.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36502 91177308-0d34-0410-b5e6-96231b3b80d8

Expand UINT_TO_FP in turns of SINT_TO_FP when UINTTOFP_* libcalls are not available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36501 91177308-0d34-0410-b5e6-96231b3b80d8