further simplify EmitAlignment by eliminating the
ForcedAlignBits argument, tweaking the single client of it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102484 91177308-0d34-0410-b5e6-96231b3b80d8

remove a dead argument to EmitAlignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102483 91177308-0d34-0410-b5e6-96231b3b80d8

remove some default arguments to EmitAlignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102482 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102481 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite the section on trap values to contain a generic description
of dependence and define trap values in terms of dependence, instead
of trying to cover the concept with a flurry of ad-hoc rules.

The dependence model isn't complete yet, but it's already much more
rigorous than the description it replaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102479 91177308-0d34-0410-b5e6-96231b3b80d8

Fix spelling errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102478 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak x86 INC/DEC generation to look for CopyToReg or SETCC.  Radar 7866163.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102477 91177308-0d34-0410-b5e6-96231b3b80d8

further clarify alignment of globals, fix instcombine
to not increase the alignment of globals with an assigned
alignment and section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102476 91177308-0d34-0410-b5e6-96231b3b80d8

improve the global variable alignment description.
it is not generally valid for targets to overalign
them when an alignment is specified.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102474 91177308-0d34-0410-b5e6-96231b3b80d8

Use MachineOperand::is* predicates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102472 91177308-0d34-0410-b5e6-96231b3b80d8

Use isReg(), isImm() and isFPImm().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102470 91177308-0d34-0410-b5e6-96231b3b80d8

Check operand type first.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102468 91177308-0d34-0410-b5e6-96231b3b80d8

Fix obvious typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102467 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore DBG_VALUE instructions that points to undef values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102463 91177308-0d34-0410-b5e6-96231b3b80d8

SRA promotion is also not free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102456 91177308-0d34-0410-b5e6-96231b3b80d8

- When legal, promote a load to zextload rather than ext load.
- Catch more further dag combine opportunities as result of operand promotion, e.g. (i32 anyext (i16 trunc (i32 x))) -> (i32 x)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102455 91177308-0d34-0410-b5e6-96231b3b80d8

Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges.
This patch fixes bug (PR6894) introduced by previous version of this patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102454 91177308-0d34-0410-b5e6-96231b3b80d8

Do not count kill, implicit_def instructions as printed instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102453 91177308-0d34-0410-b5e6-96231b3b80d8

round zero-byte .zerofill directives up to 1 byte.  This
should fix some "g++.dg-struct-layout-1" failures,
rdar://7886017

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102421 91177308-0d34-0410-b5e6-96231b3b80d8

fix wordo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102418 91177308-0d34-0410-b5e6-96231b3b80d8

remove some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102417 91177308-0d34-0410-b5e6-96231b3b80d8

Revert a small part of 102372; this fixes at least one
of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102410 91177308-0d34-0410-b5e6-96231b3b80d8

r98363 deleted a '!' when cleaning up whitespace. This caused globals which are
*not* declarations to *not* be placed in the "preserve" list.
<rdar://problem/7870735>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102405 91177308-0d34-0410-b5e6-96231b3b80d8

Un-XFAIL this on ppc.  My enabling of dbg_declare handling
in ISel fixed it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102404 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a problem that lower invoke has with allocas (PR6694), and
add a version of createLowerInvokePass that allows the client
to specify whether it wants "expensive" or "cheap" lowering.

Patch by Alex Mac!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102402 91177308-0d34-0410-b5e6-96231b3b80d8

add a comment in verbose-asm mode indicating why a noop is being generated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102401 91177308-0d34-0410-b5e6-96231b3b80d8

on darwin empty functions need to codegen into something of non-zero length,
otherwise labels get incorrectly merged.  We handled this by emitting a
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes.  Handle this by emitting a noop.  This
is more gross than it should be because arm/ppc are not fully mc'ized yet.

This fixes rdar://7908505

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102400 91177308-0d34-0410-b5e6-96231b3b80d8

Integrate Jeffery Yasskin's suggestions with respect to
traps flowing through memory references, add some text to
better cover phi nodes and externally-visible side effects,
add an example of instructions being control-dependent
on a trap value, and reword some of the existing trap rules.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102399 91177308-0d34-0410-b5e6-96231b3b80d8

Handle register-to-register copies within the tGPR class.
Radar 7896289

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102396 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid adding a null MD node operand, which crashes with "-debug" when trying
to print the operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102395 91177308-0d34-0410-b5e6-96231b3b80d8

Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This simplifies debug range entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102394 91177308-0d34-0410-b5e6-96231b3b80d8

When checking whether the special handling for an addrec increment which
doesn't dominate the header is needed, don't check whether the increment
expression has computable loop evolution. While the operands of an
addrec are required to be loop-invariant, they're not required to
dominate any part of the loop. This fixes PR6914.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102389 91177308-0d34-0410-b5e6-96231b3b80d8

Add a comment to this test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102387 91177308-0d34-0410-b5e6-96231b3b80d8

Consolidate the description of volatile operations, now that some of the
intrinsics have volatile semantics in addition to the load and store
instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102384 91177308-0d34-0410-b5e6-96231b3b80d8

Branching or switching on trap transfers imminent undefined behavior
onto control-dependent instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102381 91177308-0d34-0410-b5e6-96231b3b80d8

Remove crufty comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102380 91177308-0d34-0410-b5e6-96231b3b80d8

add some typewriter tags

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102378 91177308-0d34-0410-b5e6-96231b3b80d8

Fix HTML errors that Jeffery Yasskin noticed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102376 91177308-0d34-0410-b5e6-96231b3b80d8

Handle target-specific form of DBG_VALUE in AsmPrinter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102373 91177308-0d34-0410-b5e6-96231b3b80d8

Add DBG_VALUE handling for byval parameters; this
produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102372 91177308-0d34-0410-b5e6-96231b3b80d8

Add PPC AsmPrinter handling for target-specific form of
DBG_VALUE, and a cautionary comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102371 91177308-0d34-0410-b5e6-96231b3b80d8

Insert dbg_value instructions for function entry block liveins (i.e. function arguments).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102368 91177308-0d34-0410-b5e6-96231b3b80d8

Promoting 16-bit cmp / test aren't free. Don't do it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102366 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6921 a different way.  Intead of increasing the
alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102365 91177308-0d34-0410-b5e6-96231b3b80d8

Re-enable 102323 with fix: do not update dbg_value's with incorrect frame indices when the live interval are being re-materialized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102361 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r102300/102301, which serious broke objc apps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102359 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6940: sitofp(undef) folds to 0.0, not undef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102358 91177308-0d34-0410-b5e6-96231b3b80d8

wrap some long lines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102354 91177308-0d34-0410-b5e6-96231b3b80d8

Update MachineSSAUpdater with the same changes I made for the IR-level
SSAUpdater.  I'm going to try to refactor this to share most of the code
between them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102353 91177308-0d34-0410-b5e6-96231b3b80d8

add GHC, thanks to David Terei

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102352 91177308-0d34-0410-b5e6-96231b3b80d8

Temporary disable spiller modifying dbg_value. It's breaking build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102327 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a redundant comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102326 91177308-0d34-0410-b5e6-96231b3b80d8

Add PPC specific emitFrameIndexDebugValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102325 91177308-0d34-0410-b5e6-96231b3b80d8

Add ARM specific emitFrameIndexDebugValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102324 91177308-0d34-0410-b5e6-96231b3b80d8

- Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue.
- Teach spiller to modify DBG_VALUE instructions to reference spill slots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102323 91177308-0d34-0410-b5e6-96231b3b80d8

Stop abusing EmitInstrWithCustomInserter for target-dependent
form of DEBUG_VALUE, as it doesn't have reasonable default
behavior for unsupported targets.  Add a new hook instead.
No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102320 91177308-0d34-0410-b5e6-96231b3b80d8

another typo pointed out by sajd

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102319 91177308-0d34-0410-b5e6-96231b3b80d8

fix two typos pointed out by sajd

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102318 91177308-0d34-0410-b5e6-96231b3b80d8

Add comment re byval args.  Doesn't actually work this way yet.
xs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102316 91177308-0d34-0410-b5e6-96231b3b80d8

Added bullet about GNUstep Objective-C ABI support to the Clang section of the release notes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102309 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR6913

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102303 91177308-0d34-0410-b5e6-96231b3b80d8

this passes now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102301 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR6921: globals were not getting correctly rounded up to their
preferred alignment unless they were common or some other special
case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102300 91177308-0d34-0410-b5e6-96231b3b80d8

silence a warning, patch by "mike".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102297 91177308-0d34-0410-b5e6-96231b3b80d8

remove #if 1's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102296 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an autoconf bug: The second argument to AC_LANG_PROGRAM is code that
gets placed inside a main function, and should not itself be a main
function. This is silently hidden in GCC-hosted builds because the
inner main looks like a nested function declaration, which GCC supports.
In builds with compilers which do not support nested functions (by default),
this was causing an error, which caused these autoconf checks to fail,
leaving their options disabled.

This fixes test/Feature/load_module.ll on x86_64-unknown-linux-gnu
llvm-gcc selfhost builds, among other things.

This also includes a regenerated configure, as the diff is small and telling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102288 91177308-0d34-0410-b5e6-96231b3b80d8

PHI nodes also do not necessarily return trap with a trap operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102278 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102276 91177308-0d34-0410-b5e6-96231b3b80d8

Use provided llvm-defined variables instead of twisting user-controlled knobs.
No visible change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102240 91177308-0d34-0410-b5e6-96231b3b80d8

Don't touch CXXFLAGS. If it's set in the environment then sub-makes will see
the variable that we set as though it came from the user. Fixes PR6835.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102239 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid promoting a i16 node if it would eliminate a (store (op (load))) opportunity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102237 91177308-0d34-0410-b5e6-96231b3b80d8

When a load operand is promoted to an extload, replace other uses with uses of extload result truncated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102236 91177308-0d34-0410-b5e6-96231b3b80d8

Generalize LSR's OptimizeMax to handle the new kinds of max expressions
that indvars may use, now that indvars is recognizing le and ge loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102235 91177308-0d34-0410-b5e6-96231b3b80d8

ScalarEvolution support for <= and >= loops.

Also, generalize ScalarEvolutions's min and max recognition to handle
some new forms of min and max that this change makes more common.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102234 91177308-0d34-0410-b5e6-96231b3b80d8

Use SimplifyICmpOperands in isKnownPredicate too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102233 91177308-0d34-0410-b5e6-96231b3b80d8

Update isImpliedCond to use the new SimplifyICmpOperands utility.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102232 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new utility function SimplifyICmpOperands. Much of this code is
refactored out of ScalarEvolution::isImpliedCond, which will be updated
to use this new utility routine soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102229 91177308-0d34-0410-b5e6-96231b3b80d8

Apply a fix for a vector setcc dagcombine from Jan Sjodin. No
testcase yet, as the testcase now fails downstream.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102228 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed edis to tokenize instructions with no
operands correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102227 91177308-0d34-0410-b5e6-96231b3b80d8

cross-build Makefile needs to unset CFLAGS/CXXFLAGS when building the build-side utilities since the flags will be for the cross-compiler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102225 91177308-0d34-0410-b5e6-96231b3b80d8

no longer xfail

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102220 91177308-0d34-0410-b5e6-96231b3b80d8

Fixes to edis that mark x86 call targets as
memory operands rather than immediate operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102217 91177308-0d34-0410-b5e6-96231b3b80d8

Per Chris, fuse four trivial tests using grep (r102199) into one that uses FileCheck.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102216 91177308-0d34-0410-b5e6-96231b3b80d8

enable my inliner change: add newly devirtualized call sites to
the worklist, making them inline candidates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102213 91177308-0d34-0410-b5e6-96231b3b80d8

Change TargetData's algorithm for computing defualt vector type
alignment to match what's used in clang and GCC for __alignof, rather
than trying to guess what Legalize is going to be doing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102206 91177308-0d34-0410-b5e6-96231b3b80d8

Code refactoring.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102202 91177308-0d34-0410-b5e6-96231b3b80d8

Add some missing x86 patterns for movdq2q.  Fixes two (LLVM-)GCC DejaGNU testcases.  Radar 6881029.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102199 91177308-0d34-0410-b5e6-96231b3b80d8

fix some failures my callgraph dump format change broke.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102197 91177308-0d34-0410-b5e6-96231b3b80d8

switch InlineInfo.DevirtualizedCalls's list to be of WeakVH.
This fixes a bug where calls inlined into an invoke would get
changed into an invoke but the array would keep pointing to
the (now dead) call.  The improved inliner behavior is still
disabled for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102196 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for the bug that required a patch to be reverted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102195 91177308-0d34-0410-b5e6-96231b3b80d8

fix callgraph dump to not print 0x0x1234 for nodes.
Add the instruction pointer value for debuggability.
We now get dump output that looks like this:

Call graph node for function: 'f1'<<0x1017086b0>>  #uses=1
  CS<0x1017046f8> calls external node

Call graph node for function: '_ZNSt6vectorIdSaIdEEC1EmRKdRKS0_'<<0x1017086f0>>  #uses=1
  CS<0x0> calls external node

Call graph node for function: 'f4'<<0x1017087a0>>  #uses=1
  CS<0x101708c88> calls function 'f3'

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102194 91177308-0d34-0410-b5e6-96231b3b80d8

Fix X86ISD::CMP i16 to i32 promotion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102192 91177308-0d34-0410-b5e6-96231b3b80d8

Move FastISel's HandlePHINodesInSuccessorBlocks call down into FastISel
itself too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102176 91177308-0d34-0410-b5e6-96231b3b80d8

Switch getelementptr inbounds and sdiv exact from undef to trap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102175 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed EDOperand to use the operand type, not the
flags, to determine whether or not the operand is
a memory operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102158 91177308-0d34-0410-b5e6-96231b3b80d8

Fix LSR to tolerate cases where ScalarEvolution initially
misses an opportunity to fold add operands, but folds them
after LSR has separated them out. This fixes rdar://7886751.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102157 91177308-0d34-0410-b5e6-96231b3b80d8

When it doesn't matter whether zero or sign extension is used,
use ScalarEvolutions "any" extend function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102156 91177308-0d34-0410-b5e6-96231b3b80d8

Revert 102135, 102129, 102127, 102106, 102104, 102102, 102012, 102004,
because 102004 causes codegen to emit invalid assembly on at least
x86_64-unknown-gnu-linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102155 91177308-0d34-0410-b5e6-96231b3b80d8

reject invalid comma stuff with a message.  We reject the case in
PR6888 with:

$ llvm-as t.ll
llvm-as: t.ll:2:29: error: expected metadata or 'align'
 store <3 x i32> %x, i32 1, i32 1>, <3 x i32>* %p
                            ^

instead of:

$ llvm-as t.ll
llvm-as:

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102154 91177308-0d34-0410-b5e6-96231b3b80d8

disable my previous inliner patch, it appears to be busting self-host.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102153 91177308-0d34-0410-b5e6-96231b3b80d8