SystemZ: Add support for __builtin_setjmp and __builtin_longjmp. (#119257)

This pr includes fixes for original pr##116642.
Implementation for __builtin_setjmp and __builtin_longjmp for SystemZ..

Revert "[SystemZ] Add support for __builtin_setjmp and __builtin_longjmp (#116642)"

This reverts commit 030bbc92a705758f1131fb29cab5be6d6a27dd1f.

[SystemZ] Add support for __builtin_setjmp and __builtin_longjmp (#116642)

Implementation for __builtin_setjmp and __builtin_longjmp for SystemZ.

[Target] Remove unused includes (NFC) (#116577)

Identified with misc-include-cleaner.

[SystemZ][XRay] Implement XRay instrumentation for SystemZ (#113253)

Expands pseudo instructions PATCHABLE_FUNCTION_ENTER and PATCHABLE_RET
into a small instruction sequence which calls into the XRa

[SystemZ][XRay] Implement XRay instrumentation for SystemZ (#113253)

Expands pseudo instructions PATCHABLE_FUNCTION_ENTER and PATCHABLE_RET
into a small instruction sequence which calls into the XRay library.

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[SystemZ] Split SystemZInstPrinter to two classes based on Asm dialect (#112975)

In preparation for future work on separating the output of the GNU/HLASM
ASM dialects, we first separate the SystemZ

[SystemZ] Split SystemZInstPrinter to two classes based on Asm dialect (#112975)

In preparation for future work on separating the output of the GNU/HLASM
ASM dialects, we first separate the SystemZInstPrinter classes to two
versions, one for each ASM dialect.

The common code remains in a SystemZInstPrinterCommon class instead.

---------

Co-authored-by: Tony Tao <tonytao@ca.ibm.com>

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[SystemZ][z/OS] Fix incorrect codegen for ADA_ENTRY pseudo instruction (#101415)

The current MCInstBuilder for generating an ALGFI when loading something
from the ADA is incorrect and will crash th

[SystemZ][z/OS] Fix incorrect codegen for ADA_ENTRY pseudo instruction (#101415)

The current MCInstBuilder for generating an ALGFI when loading something
from the ADA is incorrect and will crash the compiler.

r0 must also be excluded from the registers returned as the result,
since it is treated as the value "0" on z/OS.

Also add some tests to properly test the paths where LLILF and ALGFI are
generated.

---------

Co-authored-by: Tony Tao <tonytao@ca.ibm.com>

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[IR] Don't include Module.h in Analysis.h (NFC) (#97023)

Replace it with a forward declaration instead. Analysis.h is pulled in
by all passes, but not all passes need to access the module.

[SystemZ] [z/OS] Emit offset to PPA2 in separate MCSection (#84043)

The ppa2list section isn't really part of the ppa2 section. The ppa2list
section contains the offset to the ppa2, and must be cre

[SystemZ] [z/OS] Emit offset to PPA2 in separate MCSection (#84043)

The ppa2list section isn't really part of the ppa2 section. The ppa2list
section contains the offset to the ppa2, and must be created with a
special section name (specifically, C_@@QPPA2). The binder searches for
a section with this name, then uses this value to locate the ppa2.

In GOFF terms, these are entirely separate sections; the PPA2 section
isn't even really a section but rather belongs to the code section. On
the other hand, the ppa2list section is a section in its own right and
resides in a separate TXT record.

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[SystemZ] Implement A, O and R inline assembly format flags (#80685)

Implement the following assembly format flags, which are already
supported by GCC:

'A': On z14 or higher: If operand is a me

[SystemZ] Implement A, O and R inline assembly format flags (#80685)

Implement the following assembly format flags, which are already
supported by GCC:

'A': On z14 or higher: If operand is a mem print the alignment
hint usable with vl/vst prefixed by a comma.
'O': print only the displacement of a memory reference or address.
'R': print only the base register of a memory reference or address.

Implement 'A' conservatively, since the memory operand alignment
information is not available for INLINEASM at the moment.

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[SystemZ][z/OS] Add exception handling for XPLINK (#74638)

Adds emitting the exception table and the EH registers for XPLINK.

---------

Co-authored-by: Yusra Syeda <yusra.syeda@ibm.com>

[SystemZ] Handle index-only addresses in (dis)assembler

Most addresses in SystemZ instructions take two registers,
an index register and a base register. However, either of
those can be omitted. I

[SystemZ] Handle index-only addresses in (dis)assembler

Most addresses in SystemZ instructions take two registers,
an index register and a base register. However, either of
those can be omitted. If there is just a single register,
this usually is taken as the base register - however, there
are certain rare cases where you specifically want to use
an index register but no base register. This is currently
not handled consistently by the assembler / disassembler.

Fix this by
- always emitting a dummy 0 as base register for index-
only addresses
- correctly handle dummy 0 as indicating no base register
when parsing an address

This is compatible with current GNU binutils behavior.

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[SystemZ][z/OS] This change adds support for the PPA2 section in zOS (#68926)

This PR adds support for the PPA2 fields.

---------

Co-authored-by: Yusra Syeda <yusra.syeda@ibm.com>

[SystemZ][z/OS] Fix the entry point marker for leaf functions

The function emitFunctionEntryLabel does not look at whether or not a function is a leaf when setting the entry flags, and instead blind

[SystemZ][z/OS] Fix the entry point marker for leaf functions

The function emitFunctionEntryLabel does not look at whether or not a function is a leaf when setting the entry flags, and instead blindly marks all functions as non-leaf routines.

Differential Revision: https://reviews.llvm.org/D157701

Reviewed By: uweigand

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Revert "[SystemZ][z/OS] Fix the entry point marker for leaf functions"

This reverts commit 8af297bbb8e97de8908b857eae1a44f46a0d5afe.

Testcase LLVM :: MC/GOFF/ppa1.ll needs to be updated to account

Revert "[SystemZ][z/OS] Fix the entry point marker for leaf functions"

This reverts commit 8af297bbb8e97de8908b857eae1a44f46a0d5afe.

Testcase LLVM :: MC/GOFF/ppa1.ll needs to be updated to account for this.

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[SystemZ][z/OS] Fix the entry point marker for leaf functions

The function emitFunctionEntryLabel does not look at whether or not a function is a leaf when setting the entry flags,
and instead blind

[SystemZ][z/OS] Fix the entry point marker for leaf functions

The function emitFunctionEntryLabel does not look at whether or not a function is a leaf when setting the entry flags,
and instead blindly marks all functions as non-leaf routines. Change it to check if a function is a leaf function and
mark it accordingly.

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[SystemZ][z/OS] Add support for function name field of PPA1

This PR causes the PPA1 to emit the function's name if it exists. This field is not emitted for unnamed functions.

Reviewed By: uweigand

[SystemZ][z/OS] Add support for function name field of PPA1

This PR causes the PPA1 to emit the function's name if it exists. This field is not emitted for unnamed functions.

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D157494

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[SystemZ][z/OS] Address single comment in ADA patch for EmittedBytes unused in -Asserts

[SystemZ][z/OS] z/OS ADA codegen and emission

This patch adds support for the ADA (associated data area), doing the following:

-Creates the ADA table to handle displacements
-Emits the ADA section

[SystemZ][z/OS] z/OS ADA codegen and emission

This patch adds support for the ADA (associated data area), doing the following:

-Creates the ADA table to handle displacements
-Emits the ADA section in the SystemZAsmPrinter
-Lowers the ADA_ENTRY node into the appropriate load instruction

Differential Revision: https://reviews.llvm.org/D153788

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Revert "[SystemZ][z/OS] This patch adds support for the ADA (associated data area), doing the following:"

This reverts commit 9df0f66af5462e23216eae31aedbd4d2f459cc3d.

[SystemZ][z/OS] This patch adds support for the ADA (associated data area), doing the following:
- Creates the ADA table to handle displacements
- Emits the ADA section in the SystemZAsmPrinter
- Low

[SystemZ][z/OS] This patch adds support for the ADA (associated data area), doing the following:
- Creates the ADA table to handle displacements
- Emits the ADA section in the SystemZAsmPrinter
- Lowers the ADA_ENTRY node into the appropriate load instruction

Differential Revision: https://reviews.llvm.org/D153788

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[llvm] Add missing StringExtras.h includes

In preparation for removing the `#include "llvm/ADT/StringExtras.h"`
from the header to source file of `llvm/Support/Error.h`, first add in
all the missing

[llvm] Add missing StringExtras.h includes

In preparation for removing the `#include "llvm/ADT/StringExtras.h"`
from the header to source file of `llvm/Support/Error.h`, first add in
all the missing includes that were previously included transitively
through this header.

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[SystemZ][z/OS] Correct value of length/4 of params field in PPA1.

The Length/4 of Params field in the PPA1 ought to be the length of the parameters for the current function. Currently we are storin

[SystemZ][z/OS] Correct value of length/4 of params field in PPA1.

The Length/4 of Params field in the PPA1 ought to be the length of the parameters for the current function. Currently we are storing the length of the parameter area in the current function's stack frame, which represents the length of the params of the longest callee in the current function.

Differential Revision: https://reviews.llvm.org/D152920

Reviewed By: uweigand

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Revert "[SystemZ][z/OS] Correct value of length/4 of params field in PPA1."

This reverts commit e0f7b0e0f704dc3759925602e474b9e669270fcb.

[SystemZ][z/OS] Correct value of length/4 of params field in PPA1.

The Length/4 of Params field in the PPA1 ought to be the length of the parameters for the current function. Currently we are storin

[SystemZ][z/OS] Correct value of length/4 of params field in PPA1.

The Length/4 of Params field in the PPA1 ought to be the length of the parameters for the current function. Currently we are storing the length of the parameter area in the current function's stack frame, which represents the length of the params of the longest callee in the current function.

Differential revision: https://reviews.llvm.org/D119049

Reviewed By: uweigand

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