empty.

This makes adding projects to LLVM_ENABLE_PROJECTS possible.
Also its type should be PATH.

https://bugs.llvm.org/show_bug.cgi?id=42698

Reviewers: beanz, greened, chapuni

Reviewed by: beanz

Differential Revision: https://reviews.llvm.org/D65045

llvm-svn: 367144

llvm-svn: 367143

Summary:
When specifying symbolic permissions with + or -, if none of
a/u/g/o are specified, bits set in the umask are not affected.
This caused the llvm-lipo executability tests to fail on some
systems, e.g. having an umask of 027 would cause chmod -x to not
clear the executable bit for others. This change instead
uses chmod a-x, which clears all the executable bits regardless
of umask.

Reviewers: smeenai, hans, anushabasana

Reviewed By: smeenai

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65342

llvm-svn: 367142

Revert "[X86][SSE] Replace PMULDQ GetDemandedBits combine with SimplifyMultipleUseDemandedBits handler."

This reverts r367100, it appears to be causing test failures after
Nico's revert of r367091.

llvm-svn: 367141

Adds machine operand lowering for MCSymbolSDNodes to the PowerPC
backend. This is needed to produce call instructions in assembly for AIX
because the callee operand is a MCSymbolSDNode. The test is XFAIL'ed for
asserts due to a (valid) assertion in PEI that the AIX ABI isn't supported yet.

Differential Revision: https://reviews.llvm.org/D63738

llvm-svn: 367133

llvm-svn: 367131

This patch enables support for --add-section=... option for COFF objects.

Differential Revision: https://reviews.llvm.org/D65040

llvm-svn: 367130

Summary:
The bitperm feature flag is now prefixed with SVE2, as it is for all other SVE2
extensions

Patch by Maciej Gabka.

Reviewers: sdesmalen, rovka, chill, SjoerdMeijer, rengolin

Reviewed By: SjoerdMeijer, rengolin

Differential Revision: https://reviews.llvm.org/D65327

llvm-svn: 367124

Set environment variables to empty values rather than attempting
to unset them via 'env -u', in order to fix NetBSD test regression
caused by r366980.  POSIX does not guarantee that env(1) supports '-u'
option, and indeed NetBSD env(1) does not support it.

Differential Revision: https://reviews.llvm.org/D65335

llvm-svn: 367123

Enable dumping output only if FILECHECK_DUMP_INPUT_ON_FAILURE is set to
a non-empty value.  This is necessary to support disabling it via
POSIX-compliant env(1) that does not support '-u' argument,
and therefore fix regression caused by r366980.

Differential Revision: https://reviews.llvm.org/D65334

llvm-svn: 367122

llvm-svn: 367118

Combine OpChain and BinOpChain structs as OpChain is a base class to
BinOpChain that is never used.

llvm-svn: 367114

In preperation for AIX support in FrameLowering: replace a number of literal
'8' that represent the stack offset of the condition register save area with
a member in PPCFrameLowering.

Patch by Chris Bowler.

llvm-svn: 367111

llvm-svn: 367109

llvm-svn: 367108

Void return used to have unsigned with value 0 for virtual register
but with addition of Register class and changes to arguments to lowerCall
this is no longer valid.
Check for void return by inspecting the Ty field in OrigRet.

Differential Revision: https://reviews.llvm.org/D65321

llvm-svn: 367107

Reviewers: arsenm, nhaehnle

Reviewed By: arsenm

Subscribers: kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, t-tye, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65328

llvm-svn: 367105

Select G_INTTOPTR and G_PTRTOINT for MIPS32.

Differential Revision: https://reviews.llvm.org/D65217

llvm-svn: 367104

(Y * (1.0 - Z)) + (X * Z) -->
Y - (Y * Z) + (X * Z) -->
Y + Z * (X - Y)

This is part of solving:
https://bugs.llvm.org/show_bug.cgi?id=42716

Factoring eliminates an instruction, so that should be a good canonicalization.
The potential conversion to FMA would be handled by the backend based on target
capabilities.

Differential Revision: https://reviews.llvm.org/D65305

llvm-svn: 367101

This removes a GetDemandedBits user and allows us to benefit from the DemandedElts propagated through SimplifyDemandedBits.

llvm-svn: 367100

Remove unused logic.

llvm-svn: 367099

[SelectionDAG] GetDemandedBits - update SIGN_EXTEND_INREG op to just call SimplifyMultipleUseDemandedBits.

llvm-svn: 367098

Add llvm.amdgcn.softwqm intrinsic which behaves like llvm.amdgcn.wqm
only if there is other WQM computation in the shader.

Reviewers: nhaehnle, tpr

Reviewed By: nhaehnle

Subscribers: arsenm, kzhuravl, jvesely, wdng, yaxunl, dstuttard, t-tye, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D64935

llvm-svn: 367097

llvm-svn: 367096

llvm-svn: 367094

Embedded Trace Extension and Trace Buffer Extension are optional
future architecture extensions.
(cf. https://developer.arm.com/architectures/cpu-architecture/a-profile/exploration-tools)

Their system registers are documented here:
https://developer.arm.com/docs/ddi0601/a

ETE shares register names with ETM. One exception is the ETE
TRCEXTINSELR0 register, which has the same encoding as the ETM
TRCEXTINSELR register (but different semantics). This patch treats
them as aliases: the assembler will accept both names, emitting
identical encoding, and the disassembler will keep disassembling
to TRCEXRINSELR.

Differential Revision: https://reviews.llvm.org/D63707

llvm-svn: 367093

Eventually all of these will be moved over, but we create nodes in GetDemandedBits recursion at the moment which causes regressions when we try to remove them all.

llvm-svn: 367092

This allows us to peek through BITCASTs and attempt simplify the source operand, and then bitcast back.

llvm-svn: 367091

Both WhileLoopStart and LoopEnd may get turned into a cmp and br pair,
so add an implicit def to these pseudo instructions in case that WLS
and LE aren't generated.

Differential Revision: https://reviews.llvm.org/D65275

llvm-svn: 367089

Summary:
This is an alternate approach to D57970.
Currently funclets reuse the same stack slots that are used in the
parent function for saving callee-saved xmm registers. If the parent
function modifies a callee-saved xmm register before an excpetion is
thrown, the catch handler will overwrite the original saved value.

This patch allocates space in funclets stack for saving callee-saved xmm
registers and uses RSP instead RBP to access memory.

Reviewers: andrew.w.kaylor, LuoYuanke, annita.zhang, craig.topper,
RKSimon

Subscribers: rnk, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63396



Signed-off-by: pengfei <pengfei.wang@intel.com>
llvm-svn: 367088

To avoid duplicates in loop metadata, if the string to add is
already there, just update the value.

Reviewers: reames, Ashutosh
Reviewed By: reames
Subscribers: hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D65265

llvm-svn: 367087

Just move the utility function to LoopUtils.cpp to re-use it in loop peeling.

Reviewers: reames, Ashutosh
Reviewed By: reames
Subscribers: hiraditya, asbirlea, llvm-commits
Differential Revision: https://reviews.llvm.org/D65264

llvm-svn: 367085

COPYFILE_CLONE is only defined on newer macOS versions, using it without
check breaks build on systems running legacy OS and toolchain.

Differential Revision: https://reviews.llvm.org/D65317

llvm-svn: 367084

llvm-svn: 367083

handleAssignments gives up pretty easily on structs, and i8 values for
some reason. The other case that doesn't work is when an implicit sret
needs to be inserted if the return size exceeds the number of return
registers.

llvm-svn: 367082

Removes illegal intermediate vectors if an operation was lowering to
concat_vectors, and the next operation is scalarized.

llvm-svn: 367081

Summary:
In `block-placement` pass, it will create some patterns for unconditional we can do the simple early retrun.
But the `early-ret` pass is before `block-placement`, we don't want to run it again.
This patch is to do the simple early return to optimize the blocks at the last of `block-placement`. 

Below is an example
```
BB:                   | BB:
   XOR 3, 3, 4        |   XOR 3, 3, 4
   B TBB              |   B ChainBB
...                   | ...
ChainBB:              | ChainBB:
   B TBB              |   ADD 3, 3, 4
...                   |   BLR
TBB:                  |
   ADD 3, 3, 4        |
   BLR                |
```

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D63972

llvm-svn: 367080

This allows every serializer format to implement metaSerializer() and
return the corresponding meta serializer.

Original llvm-svn: 366946
Reverted llvm-svn: 367004

This fixes the unit tests on Windows bots.

llvm-svn: 367078

llvm-svn: 367075

llvm-svn: 367069