Added a target specific hook to check whether / how a node can be transformed
into a pair of base / offset nodes for pre-indexed load / store ops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31407 91177308-0d34-0410-b5e6-96231b3b80d8

Add isPredecessor to check whether a node is another's predecessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31406 91177308-0d34-0410-b5e6-96231b3b80d8

Dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31405 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31404 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31403 91177308-0d34-0410-b5e6-96231b3b80d8

silence warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31402 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31401 91177308-0d34-0410-b5e6-96231b3b80d8

add createCFGSimplificationPass to ARMTargetMachine::addInstSelector

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31400 91177308-0d34-0410-b5e6-96231b3b80d8

assert.h -> cassert

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31399 91177308-0d34-0410-b5e6-96231b3b80d8

remove dead code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31398 91177308-0d34-0410-b5e6-96231b3b80d8

silence warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31397 91177308-0d34-0410-b5e6-96231b3b80d8

Don't write out variables that are never used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31396 91177308-0d34-0410-b5e6-96231b3b80d8

silence warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31395 91177308-0d34-0410-b5e6-96231b3b80d8

silence warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31394 91177308-0d34-0410-b5e6-96231b3b80d8

silence warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31393 91177308-0d34-0410-b5e6-96231b3b80d8

silence warnings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31392 91177308-0d34-0410-b5e6-96231b3b80d8

Make sample project -pedantic clean.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31391 91177308-0d34-0410-b5e6-96231b3b80d8

Make Stacker Runtime -pedantic clean.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31390 91177308-0d34-0410-b5e6-96231b3b80d8

Make llvm2cpp -pedantic clean.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31389 91177308-0d34-0410-b5e6-96231b3b80d8

Make CBackend -pedantic clean.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31388 91177308-0d34-0410-b5e6-96231b3b80d8

Make CodeGen libs -pedantic clean.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31387 91177308-0d34-0410-b5e6-96231b3b80d8

#include <assert.h>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31386 91177308-0d34-0410-b5e6-96231b3b80d8

fix a bug reid noticed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31385 91177308-0d34-0410-b5e6-96231b3b80d8

1. Hash not quite right for DIEValues.

2. Not going to use Usage (no significant benefit.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31384 91177308-0d34-0410-b5e6-96231b3b80d8

Revert last patch which causes tblgen to segfault (why, I'm not sure).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31383 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31382 91177308-0d34-0410-b5e6-96231b3b80d8

For PR786:
Remove unused variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31381 91177308-0d34-0410-b5e6-96231b3b80d8

For PR786:
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8

General clean up of teh dwarf writer.

1. Most significant is the folding of debug information entries.  This
reduced self hosted -g SelectionDAGISel.s from 120M to 13M and pretty
close to matching .o file sizes with gcc.

2. Debug information entry printing for debugging the dwarf code.

3. Bring all the code closer to llvm standards.

4. Misc. fixes and doc clean ups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31379 91177308-0d34-0410-b5e6-96231b3b80d8

move ARMCondCodeToString to ARMAsmPrinter.cpp
remove unused variables from lowerCall

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31378 91177308-0d34-0410-b5e6-96231b3b80d8

Allow FoldingSet clients to pump up the initial hash size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31377 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31376 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31375 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a function prototype that is no longer needed (REM patch missed it)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31374 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31373 91177308-0d34-0410-b5e6-96231b3b80d8

Add some documentation about the arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31372 91177308-0d34-0410-b5e6-96231b3b80d8

fix 2006-11-01-vastart.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31371 91177308-0d34-0410-b5e6-96231b3b80d8

a regression :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31370 91177308-0d34-0410-b5e6-96231b3b80d8

For PR950:
Replace the REM instruction with UREM, SREM and FREM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31369 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31368 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the getRegForInlineAsmConstraint method for PPC.  With recent
sdisel changes, this eliminates a ton of copies around common inline asms.
For example:

int test2(int Y, int X) {
  asm("foo %0, %1" : "=r"(X): "r"(X));
  return X;
}

now compiles to:

_test2:
        foo r3, r4
        blr

instead of:

_test2:
        mr r2, r4
        foo r2, r2
        mr r3, r2
        blr

GCC produces:

_test2:
        foo r4, r4
        mr r3,r4
        blr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31367 91177308-0d34-0410-b5e6-96231b3b80d8

Allow the getRegForInlineAsmConstraint method to return a register class with
no fixes physreg.  Treat this as permission to use any register in the register
class.  When this happens and it is safe, allow the llvm register allcoator to
allocate the register instead of doing it at isel time.  This eliminates a ton
of copies around common inline asms.  For example:

int test2(int Y, int X) {
  asm("foo %0, %1" : "=r"(X): "r"(X));
  return X;
}

now compiles to:

_test2:
        foo r3, r4
        blr

instead of:

_test2:
        mr r2, r4
        foo r2, r2
        mr r3, r2
        blr

GCC produces:

_test2:
        foo r4, r4
        mr r3,r4
        blr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31366 91177308-0d34-0410-b5e6-96231b3b80d8

generalize this api

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31365 91177308-0d34-0410-b5e6-96231b3b80d8

Rename

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31364 91177308-0d34-0410-b5e6-96231b3b80d8

Two-address instructions no longer have to be A := A op C. Now any pair of dest / src operands can be tied together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31363 91177308-0d34-0410-b5e6-96231b3b80d8

There can be more than one PHINode at the start of the block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31362 91177308-0d34-0410-b5e6-96231b3b80d8

Tied-to constraint must be op_with_larger_idx = op_with_smaller_idx or else throw an exception.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31361 91177308-0d34-0410-b5e6-96231b3b80d8

Added getTiedToSrcOperand() to check for two-address'ness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31360 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31359 91177308-0d34-0410-b5e6-96231b3b80d8

Handle PHINode with only one incoming value.
This fixes http://llvm.org/bugs/show_bug.cgi?id=979

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31358 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase from llvm.org/bugs/show_bug.cgi?id=979

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31357 91177308-0d34-0410-b5e6-96231b3b80d8

CopyFromReg starts a live range so its use should not be considered a floater.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31356 91177308-0d34-0410-b5e6-96231b3b80d8

Make ScalarEvolution actually use a ZeroExtend expression instead of
having SCZeroExtendExpr be equivalent to SCTruncate

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31355 91177308-0d34-0410-b5e6-96231b3b80d8

give branch folding a simple heuristic to decide which block to split so that
it inserts an uncond branch where it is less likely to cause a problem.  This
fixes some perf issues on ppc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31354 91177308-0d34-0410-b5e6-96231b3b80d8

extra pass is required now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31353 91177308-0d34-0410-b5e6-96231b3b80d8

Fix GlobalOpt/2006-11-01-ShrinkGlobalPhiCrash.ll and McGill/chomp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31352 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase that crashes global opt, reduced from chomp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31351 91177308-0d34-0410-b5e6-96231b3b80d8

Partial update for Release 1.9

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31350 91177308-0d34-0410-b5e6-96231b3b80d8

print null values in bss

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31349 91177308-0d34-0410-b5e6-96231b3b80d8

implement  zextload bool and truncstore bool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31348 91177308-0d34-0410-b5e6-96231b3b80d8

Add a printSetLabel that takes two id's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31347 91177308-0d34-0410-b5e6-96231b3b80d8

Factor gep instructions through phi nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31346 91177308-0d34-0410-b5e6-96231b3b80d8

remove a testcase for a marginal feature

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31345 91177308-0d34-0410-b5e6-96231b3b80d8

Turn a phi of many loads into a phi of the address and a single load of the
result.  This can significantly shrink code and exposes identities more
aggressively.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31344 91177308-0d34-0410-b5e6-96231b3b80d8

Fix ldmxcsr JIT encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31343 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in the previous patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31342 91177308-0d34-0410-b5e6-96231b3b80d8

Fold things like "phi [add (a,b), add(c,d)]" into two phi's and one add.

This triggers thousands of times on multisource.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31341 91177308-0d34-0410-b5e6-96231b3b80d8

Print jumptable index.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31340 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary sign conversions made possible by last patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31339 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in the interpreter where divides of unmatched signed operands
would fail. E.g. udiv sint X, Y  or sdiv uint X, Y would fail to find a
type match in the switch statement and fail the operation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31338 91177308-0d34-0410-b5e6-96231b3b80d8

make tail merging more aggressive.  If two blocks share a common tail, but the
tail is not an entire block for either of them, pick one, split it, then
merge the common part.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31336 91177308-0d34-0410-b5e6-96231b3b80d8

enable branch folding with an option

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31335 91177308-0d34-0410-b5e6-96231b3b80d8

Not meant to be checked in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31334 91177308-0d34-0410-b5e6-96231b3b80d8

Add operand constraints to TargetInstrInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31333 91177308-0d34-0410-b5e6-96231b3b80d8

Add constraints to Instruction class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31332 91177308-0d34-0410-b5e6-96231b3b80d8

more shotenning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31331 91177308-0d34-0410-b5e6-96231b3b80d8

Compile CodeGen/PowerPC/fp-branch.ll to:

_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        blt cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr

instead of:

_intcoord_cond_next55:
LBB1_3: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bge cr0, LBB1_1 ;bb72.exitStub
LBB1_4: ;cond_next55
        lis r2, ha16(LCPI1_0)
        lfs f0, lo16(LCPI1_0)(r2)
        fcmpu cr0, f1, f0
        bnu cr0, LBB1_2 ;cond_next62.exitStub
LBB1_1: ;bb72.exitStub
        li r3, 1
        blr
LBB1_2: ;cond_next62.exitStub
        li r3, 0
        blr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31330 91177308-0d34-0410-b5e6-96231b3b80d8

This test should compile down to one comparison, not two.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31329 91177308-0d34-0410-b5e6-96231b3b80d8

look through isunordered to inline it into branch blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31328 91177308-0d34-0410-b5e6-96231b3b80d8

Nuke dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31327 91177308-0d34-0410-b5e6-96231b3b80d8

allow the address of a global to be used with the "i" constraint when in
-static mode.  This implements PR882.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31326 91177308-0d34-0410-b5e6-96231b3b80d8

implement the 'c' inline asm modifier character

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31325 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for PR882

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31324 91177308-0d34-0410-b5e6-96231b3b80d8

handle global address constant sdnodes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31323 91177308-0d34-0410-b5e6-96231b3b80d8

Let us play simplify the td file (and fix a few missed sub and mul patterns).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31322 91177308-0d34-0410-b5e6-96231b3b80d8

make one giant add and sub tester

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31321 91177308-0d34-0410-b5e6-96231b3b80d8

handle "st" as "st(0)"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31320 91177308-0d34-0410-b5e6-96231b3b80d8

TargetLowering::isOperandValidForConstraint

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31319 91177308-0d34-0410-b5e6-96231b3b80d8

Change the prototype for TargetLowering::isOperandValidForConstraint

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31318 91177308-0d34-0410-b5e6-96231b3b80d8

generalize the fix for PR977 to also fix
Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31317 91177308-0d34-0410-b5e6-96231b3b80d8

another testcase for PR977

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31316 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31315 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR977

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31314 91177308-0d34-0410-b5e6-96231b3b80d8

Add all that branch mangling niftiness

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31313 91177308-0d34-0410-b5e6-96231b3b80d8

add support for calling functions when the caller has variable sized objects

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31312 91177308-0d34-0410-b5e6-96231b3b80d8

1. Clean up code due to changes in SwitchTo*Section(2)
2. Added partial debug support for mingw\cygwin targets (the same as
   Linux\ELF). Please note, that currently mingw\cygwin uses 'stabs' format
   for storing debug info by default, thus many (runtime) libraries has
   this information included. These formats shouldn't be mixed in one binary
   ('stabs' & 'DWARF'), otherwise binutils tools will be confused.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31311 91177308-0d34-0410-b5e6-96231b3b80d8

Turn an assert into an error message.  This is commonly triggered when
we don't support a specific constraint yet.  When this happens, print the
unsupported constraint.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31310 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31309 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31308 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31307 91177308-0d34-0410-b5e6-96231b3b80d8