fix comments; NFC

llvm-svn: 270237

use range-loops; NFCI

llvm-svn: 270236

fix documentation comments; NFC

llvm-svn: 270234

Add MachineFunctionProperty checks for AllVRegsAllocated for target passes

Summary:
This adds the same checks that were added in r264593 to all
target-specific passes that run after register allocat

Add MachineFunctionProperty checks for AllVRegsAllocated for target passes

Summary:
This adds the same checks that were added in r264593 to all
target-specific passes that run after register allocation.

Reviewers: qcolombet

Subscribers: jyknight, dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D18525

llvm-svn: 265313

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Disallow generating vzeroupper before return instruction (iret) in interrupt handler function.
This resolves https://llvm.org/bugs/show_bug.cgi?id=26412

Differential Revision: http://reviews.llvm.or

Disallow generating vzeroupper before return instruction (iret) in interrupt handler function.
This resolves https://llvm.org/bugs/show_bug.cgi?id=26412

Differential Revision: http://reviews.llvm.org/D17542

llvm-svn: 262319

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Disable the vzeroupper insertion pass on PS4.

Differential Revision: http://reviews.llvm.org/D16837

llvm-svn: 260764

Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

Apparently, the style needs to be agreed upon first.

llvm-svn: 240390

Fixed/added namespace ending comments using clang-tidy. NFC

The patch is generated using this command:

tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
-checks=-*,llvm-namespace-c

Fixed/added namespace ending comments using clang-tidy. NFC

The patch is generated using this command:

tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
-checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
llvm/lib/


Thanks to Eugene Kosov for the original patch!

llvm-svn: 240137

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use range-based for-loop; NFC

llvm-svn: 236544

Fix typos; NFC.

llvm-svn: 228493

Reuse a bunch of cached subtargets and remove getSubtarget calls
without a Function argument.

llvm-svn: 227814

X86: VZeroUpperInserter: shortcut should not trigger if we have any function live-ins.

llvm-svn: 225419

Have MachineFunction cache a pointer to the subtarget to make lookups
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lo

Have MachineFunction cache a pointer to the subtarget to make lookups
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838

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Remove the TargetMachine forwards for TargetSubtargetInfo based
information and update all callers. No functional change.

llvm-svn: 214781

Avoid using subtarget features when adding X86 specific passes to
the pass pipeline.

llvm-svn: 209382

[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE
definition below all of the header #include lines, lib/Target/...
edition.

llvm-svn: 206842

[X86] New and improved VZeroUpperInserter optimization.

- Adds support for inserting vzerouppers before tail-calls.
This is enabled implicitly by having MachineInstr::copyImplicitOps preserve
re

[X86] New and improved VZeroUpperInserter optimization.

- Adds support for inserting vzerouppers before tail-calls.
This is enabled implicitly by having MachineInstr::copyImplicitOps preserve
regmask operands, which allows VZeroUpperInserter to see where tail-calls use
vector registers.

- Fixes a bug that caused the previous version of this optimization to miss some
vzeroupper insertion points in loops. (Loops-with-vector-code that followed
loops-without-vector-code were mistakenly overlooked by the previous version).

- New algorithm never revisits instructions.

Fixes <rdar://problem/16228798>

llvm-svn: 204021

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[C++11] Add 'override' keyword to virtual methods that override their base class.

llvm-svn: 203378

AVX-512: Added more intrinsics for convert and min/max.
Removed vzeroupper from AVX-512 mode - our optimization gude does not recommend to insert vzeroupper at all.

llvm-svn: 198557

[X86] Check YMM31/ZMM31 as well

- No test case as there's no calling convention preserve YMM31/ZMM31 only

llvm-svn: 196391

Enhance the fix of PR17631

- The fix to PR17631 fixes part of the cases where 'vzeroupper' should
not be issued before 'call' insn. There're other cases where helper
calls will be inserted not l

Enhance the fix of PR17631

- The fix to PR17631 fixes part of the cases where 'vzeroupper' should
not be issued before 'call' insn. There're other cases where helper
calls will be inserted not limited to epilog. These helper calls do
not follow the standard calling convention and won't clobber any YMM
registers. (So far, all call conventions will clobber any or part of
YMM registers.)
This patch enhances the previous fix to cover more cases 'vzerosupper' should
not be inserted by checking if that function call won't clobber any YMM
registers and skipping it if so.

llvm-svn: 196261

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Fix PR17631

- Skip instructions added in prolog. For specific targets, prolog may
insert helper function calls (e.g. _chkstk will be called when
there're more than 4K bytes allocated on stack).

Fix PR17631

- Skip instructions added in prolog. For specific targets, prolog may
insert helper function calls (e.g. _chkstk will be called when
there're more than 4K bytes allocated on stack). However, these
helpers don't use/def YMM/XMM registers.

llvm-svn: 193261

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I'm starting to commit KNL backend. I'll push patches one-by-one. This patch includes support for the extended register set XMM16-31, YMM16-31, ZMM0-31.
The full ISA you can see here: http://software

I'm starting to commit KNL backend. I'll push patches one-by-one. This patch includes support for the extended register set XMM16-31, YMM16-31, ZMM0-31.
The full ISA you can see here: http://software.intel.com/en-us/intel-isa-extensions

llvm-svn: 187030

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Prevent insertion of "vzeroupper" before call that preserves YMM registers, since a caller uses preserved registers across the call.

llvm-svn: 175043

Check for empty YMM use-def lists in X86VZeroUpper.

The previous MRI.isPhysRegUsed(YMM0) would also return true when the
function contains a call to a function that may clobber YMM0. That's
most of

Check for empty YMM use-def lists in X86VZeroUpper.

The previous MRI.isPhysRegUsed(YMM0) would also return true when the
function contains a call to a function that may clobber YMM0. That's
most of them.

Checking the use-def chains allows us to skip functions that don't
explicitly mention YMM registers.

llvm-svn: 166110

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