Implement a trivial optzn: of vastart is never called in a function that takes
... args, remove the '...'.

This is Transforms/DeadArgElim/dead_vaargs.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30459 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30458 91177308-0d34-0410-b5e6-96231b3b80d8

add a note.  Our 64-bit shifts are ~30% slower than gcc's

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30457 91177308-0d34-0410-b5e6-96231b3b80d8

Implement InstCombine/cast.ll:test31.  This speeds up 462.libquantum by 26%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30456 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30455 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for pattern matching cast operations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30454 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30453 91177308-0d34-0410-b5e6-96231b3b80d8

add a helper method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30452 91177308-0d34-0410-b5e6-96231b3b80d8

This is closer to what we really want.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30451 91177308-0d34-0410-b5e6-96231b3b80d8

Implement Transforms/InstCombine/shift-sra.ll:test0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30450 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase, can be an srl instead of sra

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30449 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite shift/and/compare sequences to promote better licm of the RHS.
Use isLogicalShift/isArithmeticShift to simplify code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30448 91177308-0d34-0410-b5e6-96231b3b80d8

Make the LLVM Publications link point to /pubs/ since this has moved to
its own page on the LLVM web site.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30447 91177308-0d34-0410-b5e6-96231b3b80d8

Added some eye-candy for Subtarget type checking
Added X86 StdCall & FastCall calling conventions. Codegen will follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30446 91177308-0d34-0410-b5e6-96231b3b80d8

Add ShiftInst::isLogical/ArithmeticShift methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30445 91177308-0d34-0410-b5e6-96231b3b80d8

Add new SetCondInst::isRelational/isEquality methods.  Rename
Instruction::isRelational to Instruction::isComparison.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30444 91177308-0d34-0410-b5e6-96231b3b80d8

Explain change with a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30443 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR912. The input to erase() must not be a reference to the data
being erased.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30442 91177308-0d34-0410-b5e6-96231b3b80d8

Small fixes for supporting dll* linkage types

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30441 91177308-0d34-0410-b5e6-96231b3b80d8

add a note noticed through source inspection

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30418 91177308-0d34-0410-b5e6-96231b3b80d8

Oh yeah, this is needed too

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30407 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30406 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Transforms/InstCombine/2006-09-15-CastToBool.ll and PR913

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30405 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for PR913

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30404 91177308-0d34-0410-b5e6-96231b3b80d8

simplify control flow, no functionality change

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30403 91177308-0d34-0410-b5e6-96231b3b80d8

Allow custom expand of mul

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30402 91177308-0d34-0410-b5e6-96231b3b80d8

comment out debug code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30401 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new -cbe-bug mode, which works just like -run-llc, except that it uses
LLC as the reference compiler to reduce testcases for bugs in GCC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30400 91177308-0d34-0410-b5e6-96231b3b80d8

add a nate note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30399 91177308-0d34-0410-b5e6-96231b3b80d8

xfail this for now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30398 91177308-0d34-0410-b5e6-96231b3b80d8

revert previous two patches.  They cause miscompilation of MultiSource/Applications/Burg

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30397 91177308-0d34-0410-b5e6-96231b3b80d8

Switching to NewNightlyTest.php

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30394 91177308-0d34-0410-b5e6-96231b3b80d8

The inliner strips dead allocas now.  Add a use to allow this test to
test the right thing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30393 91177308-0d34-0410-b5e6-96231b3b80d8

Revert my previous work on ArgumentPromotion.  Further investigation has revealed these
changes to be incorrect.  They just weren't showing up in any of our current testcases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30385 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak the JIT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30384 91177308-0d34-0410-b5e6-96231b3b80d8

Keep track of the start of MBB's in a separate map from instructions.  This
is faster and is needed for future improvements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30383 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a unnecessary check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30382 91177308-0d34-0410-b5e6-96231b3b80d8

Relax this check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30381 91177308-0d34-0410-b5e6-96231b3b80d8

Undo previous check-in.
Reintroduce recursive assignDFSNumber().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30380 91177308-0d34-0410-b5e6-96231b3b80d8

Fold (X & C1) | (Y & C2)  -> (X|Y) & C3 when possible.
This implements CodeGen/X86/and-or-fold.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30379 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30378 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30377 91177308-0d34-0410-b5e6-96231b3b80d8

Split rotate matching code out to its own function.  Make it stronger, by
matching things like ((x >> c1) & c2) | ((x << c3) & c4) to (rot x, c5) & c6

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30376 91177308-0d34-0410-b5e6-96231b3b80d8

Adding generated files for the last commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30375 91177308-0d34-0410-b5e6-96231b3b80d8

Adding dllimport, dllexport and external weak linkage types.
DLL* linkages got full (I hope) codegeneration support in C & both x86
assembler backends.
External weak linkage added for future use, we don't provide any
codegeneration, etc. support for it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30374 91177308-0d34-0410-b5e6-96231b3b80d8

Use getOffset() instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30327 91177308-0d34-0410-b5e6-96231b3b80d8

Use MachineConstantPoolEntry getOffset() and getType() accessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30326 91177308-0d34-0410-b5e6-96231b3b80d8

Add MachineConstantPoolEntry getOffset() accessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30325 91177308-0d34-0410-b5e6-96231b3b80d8

The top bit is used to determine whether it's a MachineConstantPoolValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30324 91177308-0d34-0410-b5e6-96231b3b80d8

revert accidentally committed file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30323 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead methods, add getNumBlockIDs() method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30322 91177308-0d34-0410-b5e6-96231b3b80d8

Use new config.h macro

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30321 91177308-0d34-0410-b5e6-96231b3b80d8

Add a HAVE_MACH_MACH_H #define to detect the presence of the mach/mach.h
header file on Darwin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30319 91177308-0d34-0410-b5e6-96231b3b80d8

add a new (hidden) -disable-core-files option

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30318 91177308-0d34-0410-b5e6-96231b3b80d8

On Mac OS/X, make Process::PreventCoreFiles disable crash reporter for
the process in addition to disabling core file emission.  This speeds up
bugpoint on default-configured macs by several orders of magnitude.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30317 91177308-0d34-0410-b5e6-96231b3b80d8

A MachineConstantPool may have mixed Constant* and MachineConstantPoolValue* values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30316 91177308-0d34-0410-b5e6-96231b3b80d8

Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30315 91177308-0d34-0410-b5e6-96231b3b80d8

Mirrors ConstantPoolSDNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30314 91177308-0d34-0410-b5e6-96231b3b80d8

Document new --enable-valgrind option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30313 91177308-0d34-0410-b5e6-96231b3b80d8

Fix --enable-valgrind. Add room for the new arguments, and don't keep
a pointer to a temporary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30312 91177308-0d34-0410-b5e6-96231b3b80d8

Add --enable-valgrind option to run optimizations through valgrind to
pick up on memory errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30311 91177308-0d34-0410-b5e6-96231b3b80d8

GlobalValue with InternalLinkage may have operands with ExternalLinkage
type. Do not ignore these operands while finding external references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30310 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid recursion in assignDFSNumber(). Move def from ET-Forest.h
to Dominators.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30309 91177308-0d34-0410-b5e6-96231b3b80d8

add note about switch lowering

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30308 91177308-0d34-0410-b5e6-96231b3b80d8

Second half of the fix for Transforms/Inline/inline_cleanup.ll

This folds unconditional branches that are often produced by code
specialization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30307 91177308-0d34-0410-b5e6-96231b3b80d8

Add some more consistency checks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30305 91177308-0d34-0410-b5e6-96231b3b80d8

Fix unionSets so that it can merge correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30304 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the first half of Transforms/Inline/inline_cleanup.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30303 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30302 91177308-0d34-0410-b5e6-96231b3b80d8

Skip over first operand when determining REX prefix for two-address code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30300 91177308-0d34-0410-b5e6-96231b3b80d8

Erase dead instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30298 91177308-0d34-0410-b5e6-96231b3b80d8

The sense of this branch was backwards

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30296 91177308-0d34-0410-b5e6-96231b3b80d8

Turn X < 0 -> TEST X,X js

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30294 91177308-0d34-0410-b5e6-96231b3b80d8

The sense of this branch was inverted :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30293 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a ton of jit failures

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30292 91177308-0d34-0410-b5e6-96231b3b80d8

add shifts to addressing mode 1

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30291 91177308-0d34-0410-b5e6-96231b3b80d8

If LSR went through a lot of trouble to put constants (e.g. the addr of a global
in a specific BB, don't undo this!).  This allows us to compile
CodeGen/X86/loop-hoist.ll into:

_foo:
        xorl %eax, %eax
***     movl L_Arr$non_lazy_ptr, %ecx
        movl 4(%esp), %edx
LBB1_1: #cond_true
        movl %eax, (%ecx,%eax,4)
        incl %eax
        cmpl %edx, %eax
        jne LBB1_1      #cond_true
LBB1_2: #return
        ret

instead of:

_foo:
        xorl %eax, %eax
        movl 4(%esp), %ecx
LBB1_1: #cond_true
***     movl L_Arr$non_lazy_ptr, %edx
        movl %eax, (%edx,%eax,4)
        incl %eax
        cmpl %ecx, %eax
        jne LBB1_1      #cond_true
LBB1_2: #return
        ret

This was noticed in 464.h264ref.  This doesn't usually affect PPC,
but strikes X86 all the time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30290 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30289 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a regression in the 32-bit port from the 64-bit port landing.
We now compile CodeGen/X86/lea-2.ll into:

_test:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        leal -5(%ecx,%eax,4), %eax
        ret

instead of:

_test:
        movl 4(%esp), %eax
        leal (,%eax,4), %eax
        addl 8(%esp), %eax
        addl $4294967291, %eax
        ret

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30288 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30287 91177308-0d34-0410-b5e6-96231b3b80d8

new note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30286 91177308-0d34-0410-b5e6-96231b3b80d8

new note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30285 91177308-0d34-0410-b5e6-96231b3b80d8

Compile X << 1 (where X is a long-long) to:

        addl %ecx, %ecx
        adcl %eax, %eax

instead of:

        movl %ecx, %edx
        addl %edx, %edx
        shrl $31, %ecx
        addl %eax, %eax
        orl %ecx, %eax

and to:

        addc r5, r5, r5
        adde r4, r4, r4

instead of:

        slwi r2,r9,1
        srwi r0,r11,31
        slwi r3,r11,1
        or r2,r0,r2

on PPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30284 91177308-0d34-0410-b5e6-96231b3b80d8

Compile X > -1   -> text X,X; js dest
This implements CodeGen/X86/jump_sign.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30283 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30282 91177308-0d34-0410-b5e6-96231b3b80d8

Initialize DontInternalize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30281 91177308-0d34-0410-b5e6-96231b3b80d8

Reflects MachineConstantPoolEntry changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30279 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for machine specific constantpool values. These are useful for
representing expressions that can only be resolved at link time, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30278 91177308-0d34-0410-b5e6-96231b3b80d8

Reflect MachineConstantPoolEntry changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30277 91177308-0d34-0410-b5e6-96231b3b80d8

Correct the URL to the attrib.incl file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30276 91177308-0d34-0410-b5e6-96231b3b80d8

An sinkable instruction may exist with uses, if those uses are in dead blocks.
Handle this.  This fixes PR908 and Transforms/LICM/2006-09-12-DeadUserOfSunkInstr.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30275 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR908

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30274 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase that crashes the C++ FE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30273 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30271 91177308-0d34-0410-b5e6-96231b3b80d8

Add ability to remove nodes from DominatorTree, for when a BasicBlock
is being removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30270 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase noticed from PR906

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30269 91177308-0d34-0410-b5e6-96231b3b80d8

add compilable testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30268 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for PR906

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30267 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR905 and InstCombine/2006-09-11-EmptyStructCrash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30266 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for PR905

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30265 91177308-0d34-0410-b5e6-96231b3b80d8