Introduce a pass to insert vzeroupper instructions to avoid AVX to
SSE transition penalty. The pass is enabled through the "x86-use-vzeroupper"
llc command line option. This is only the first step (very naive and
conservative one) to sketch out the idea, but proper DFA is coming next
to allow smarter decisions. Comments and ideas now and in further commits
will be very appreciated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138317 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding for SETEND.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138312 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding for SBC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138311 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding for RSB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138308 91177308-0d34-0410-b5e6-96231b3b80d8

Reject invalid imod values in t2CPS instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138306 91177308-0d34-0410-b5e6-96231b3b80d8

Add an MCInstrAnalysis version of isCall.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138305 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding for ROR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138304 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding for REV/REV16/REVSH.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138303 91177308-0d34-0410-b5e6-96231b3b80d8

Split the landing pad's edge. Then for all uses of a landingpad instruction's
value, we insert a load of the exception object and selector object from memory,
which is where it actually resides. If it's used by a PHI node, we follow that
to where it is being used. Eventually, all landingpad instructions should have
no uses. Any PHI nodes that were associated with those landingpads should be
removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138302 91177308-0d34-0410-b5e6-96231b3b80d8

t2SMLAD is a four-register instruction, not a three-register one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138301 91177308-0d34-0410-b5e6-96231b3b80d8

Correct operand naming of t2USAT16 to allow proper decoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138300 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r138278 now that r138289 has fixed the root issue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138299 91177308-0d34-0410-b5e6-96231b3b80d8

Match operand naming to allow correct decoding of t2LDRSH_POST.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138298 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ReleaseNotes.html: Mention that Windows 2000 will not be supported any more.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138297 91177308-0d34-0410-b5e6-96231b3b80d8

Improve error checking for tPUSH and tPOP register lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138295 91177308-0d34-0410-b5e6-96231b3b80d8

Match operand names to provide correct decoding for Thumb2 SMULL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138294 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy up. Trailing whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138293 91177308-0d34-0410-b5e6-96231b3b80d8

Provide a correct decoder hook for Thumb2 shifted registers.  Found by randomized testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138292 91177308-0d34-0410-b5e6-96231b3b80d8

Add NativeClient support to Triple::ParseOS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138291 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding for PUSH.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138290 91177308-0d34-0410-b5e6-96231b3b80d8

Follow up to Jim's r138278. This fixes commuteInstruction so it handles two-address instructions correctly. I'll let Jim add a test case. :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138289 91177308-0d34-0410-b5e6-96231b3b80d8

Fix think-o.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138288 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assemmbly parsing diagnostic improvements for LDM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138287 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assembly parsing and encoding for POP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138286 91177308-0d34-0410-b5e6-96231b3b80d8

X86: Add some operand types required to identify calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138285 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarilly mark tMUL as not commutable.

It's not playing nicely in the coalescer with the tied operand. Disable
commutability for now while we figure out the deeper fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138278 91177308-0d34-0410-b5e6-96231b3b80d8

Some minor wording updates and cross-linking for atomic docs.  Explicitly note that we don't try to portably define what volatile in LLVM IR means.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138274 91177308-0d34-0410-b5e6-96231b3b80d8

Provide operand encoding information for half-precision VCVT instructions.  Found by randomized testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138273 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for breaking 256-bit int VETCC into two 128-bit ones,
avoding scalarization of the compare. Reduces code from 59 to 6
instructions. Fix PR10712.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138271 91177308-0d34-0410-b5e6-96231b3b80d8

Add 128-bit AVX codegen for PCMP* family of integer instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138270 91177308-0d34-0410-b5e6-96231b3b80d8

Fix decoding of VMOVSRR and VMOVRRS, which account for the overwhelming majority of decoder crashes detected by randomized testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138269 91177308-0d34-0410-b5e6-96231b3b80d8

Make DynamicLibrary thread-safe w/r/t call to dlerror() after dlopen(). PR10718

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138260 91177308-0d34-0410-b5e6-96231b3b80d8

Tighten up ARM reglist validation a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138258 91177308-0d34-0410-b5e6-96231b3b80d8

Some whitespace fixes and #include reordering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138256 91177308-0d34-0410-b5e6-96231b3b80d8

Fix another batch of VLD/VST decoding crashes discovered by randomized testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138255 91177308-0d34-0410-b5e6-96231b3b80d8

Be less redundant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138252 91177308-0d34-0410-b5e6-96231b3b80d8

Correct writeback handling of duplicating VLD instructions.  Discovered by randomized testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138251 91177308-0d34-0410-b5e6-96231b3b80d8

Port another swathe of Thumb1 encoding tests over to decoding tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138250 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up predicates on ARM target instruction aliases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138249 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an incorrect shift when decoding SP-relative stores in Thumb1-mode.  Add more tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138246 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assembly parsing and encoding for ORR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138245 91177308-0d34-0410-b5e6-96231b3b80d8

Add a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138243 91177308-0d34-0410-b5e6-96231b3b80d8

Constant pointers to objects don't need reference counting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138242 91177308-0d34-0410-b5e6-96231b3b80d8

Make a few tests slightly more strict.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138241 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for PR10663.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138231 91177308-0d34-0410-b5e6-96231b3b80d8

Remove DEFINE_TRANSPARENT_CASTED_OPERAND_ACCESSORS, folding its
functionality into DEFINE_TRANSPARENT_OPERAND_ACCESSORS. A side-effect
of this is that the operand accessors for Constants will tolerate NULL
operands, fixing PR10663.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138230 91177308-0d34-0410-b5e6-96231b3b80d8

PathV2: Handle more reserved filenames on windows.

Patch by Aaron Ballman!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138213 91177308-0d34-0410-b5e6-96231b3b80d8

Fix AsmParser binary precedence for shift operators.

rdar://9976729

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138208 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy up. Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138207 91177308-0d34-0410-b5e6-96231b3b80d8

Add constant folding support for bitcasts of splat vectors to integers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138206 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/CrashRecoveryContext.cpp: Add Win32 support to CrashRecoveryContext. Thanks to Aaron Ballman!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138199 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/Windows/Windows.h: Require at least Windows XP(5.1) API. We will not support Windows 2000 any more.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138198 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/lit/TestingConfig.py: Pass TEMP and TMP to tests on Win32 hosts.

Win32 GetTempPath() tends to pick up %WINDIR% when neither TEMP nor TMP was found. %WINDIR% should not be treated writable on recent Windows OS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138192 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/lit/TestingConfig.py: Split out environment vars for Win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138191 91177308-0d34-0410-b5e6-96231b3b80d8

Cast through intptr_t, ISO C++ requires it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138186 91177308-0d34-0410-b5e6-96231b3b80d8

Remove remainder of migrated or obsolete tests from FrontendC and remove
the empty directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138181 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the VMOVQQ pseudo instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138177 91177308-0d34-0410-b5e6-96231b3b80d8

Remove migrated or obsolete tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138176 91177308-0d34-0410-b5e6-96231b3b80d8

Remove VMOVQQQQ pseudo instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138174 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsolete or migrated tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138173 91177308-0d34-0410-b5e6-96231b3b80d8

With the fix in r138164: "Add <imp-def> operands to QQ and QQQQ stack loads."
-verify-machineinstrs can be enabled for this test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138171 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsoleted test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138170 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tests that were either migrated to clang or are obsolete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138168 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the rest of the files in FrontendC++ and the directory itself.

All tests have been updated and migrated into clang or were obsolete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138165 91177308-0d34-0410-b5e6-96231b3b80d8

Add <imp-def> operands to QQ and QQQQ stack loads.

This pleases the register scavenger and brings
test/CodeGen/ARM/2011-08-12-vmovqqqq-pseudo.ll a little closer to
working with -verify-machineinstrs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138164 91177308-0d34-0410-b5e6-96231b3b80d8

VMOVQQQQs pseudo instructions are only created by ARMBaseInstrInfo::copyPhysReg.
Therefore, rather then generate a pseudo instruction, which is later expanded,
generate the necessary instructions in place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138163 91177308-0d34-0410-b5e6-96231b3b80d8

Remove migrated or obsolete tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138156 91177308-0d34-0410-b5e6-96231b3b80d8

If we're splitting the landing pad block and assigning it only one predecessor,
then don't split it a second time, since that block will be dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138153 91177308-0d34-0410-b5e6-96231b3b80d8

Remove migrated or obsolete tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138149 91177308-0d34-0410-b5e6-96231b3b80d8

Do not use named md nodes to track variables that are completely optimized. This does not scale while doing LTO with debug info. New approach is to include list of variables in the subprogram info directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138145 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb parsing and encoding support for NOP.

The irony is not lost that this is not a completely trivial patchset.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138143 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsolete test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138141 91177308-0d34-0410-b5e6-96231b3b80d8

Remove migrated test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138140 91177308-0d34-0410-b5e6-96231b3b80d8

Use regex to remove false dependencies on register allocation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138137 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsolete or migrated tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138135 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bug in function IsShiftedMask. Remove parameter SizeInBits, which is not
needed for Mips32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138132 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assembly parsing and encoding for NEG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138131 91177308-0d34-0410-b5e6-96231b3b80d8

Roll back the rest of r126557. It's a hack that will break in some obscure cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138130 91177308-0d34-0410-b5e6-96231b3b80d8

Fix NEG alias

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138125 91177308-0d34-0410-b5e6-96231b3b80d8

Be more lenient on tied operand matching for MUL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138124 91177308-0d34-0410-b5e6-96231b3b80d8

Re-write part of VEX encoding logic, to be more easy to read! Also fix
a bug and add a testcase!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138123 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tests migrated to clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138121 91177308-0d34-0410-b5e6-96231b3b80d8

Remove previously migrated test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138120 91177308-0d34-0410-b5e6-96231b3b80d8

Update tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138116 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tests migrated to clang or are unnecessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138115 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assembly parsing and encoding for MVN.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138109 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assembly parsing and encoding for MUL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138108 91177308-0d34-0410-b5e6-96231b3b80d8

Add IntervalMap::const_iterator::atBegin().

It returns true when operator--() can be called.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138107 91177308-0d34-0410-b5e6-96231b3b80d8

The landingpad instruction isn't dead simply because it's value isn't used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138102 91177308-0d34-0410-b5e6-96231b3b80d8

Remove this test. The feature and test have already been migrated to clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138101 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tests migrated to clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138100 91177308-0d34-0410-b5e6-96231b3b80d8

Eli points out that this is what report_fatal_error() is for.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138091 91177308-0d34-0410-b5e6-96231b3b80d8

Remove 2009-09-04-modify-crash.cpp as clang doesn't support 32-bit kext.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138087 91177308-0d34-0410-b5e6-96231b3b80d8

Remove migrated tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138086 91177308-0d34-0410-b5e6-96231b3b80d8

Remove migrated test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138085 91177308-0d34-0410-b5e6-96231b3b80d8

Remove this test. There are other, duplicates, in the clang test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138084 91177308-0d34-0410-b5e6-96231b3b80d8

Add file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138083 91177308-0d34-0410-b5e6-96231b3b80d8

Move 2010-03-22-empty-baseclass.cpp from a frontend+opt test to just
an opt test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138082 91177308-0d34-0410-b5e6-96231b3b80d8

Add FIXME.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138077 91177308-0d34-0410-b5e6-96231b3b80d8

Thumb assembly parsing and encoding for MOV.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138076 91177308-0d34-0410-b5e6-96231b3b80d8