[XCOFF] Add compiler version to an auxiliary symbol table entry (#80162)

C_FILE symbols. To match the behavior of the assembler and the legacy
compiler, this includes using the generic ".file" name

[XCOFF] Add compiler version to an auxiliary symbol table entry (#80162)

C_FILE symbols. To match the behavior of the assembler and the legacy
compiler, this includes using the generic ".file" name for the C_FILE
symbol and generating the actual file name in an auxiliary entry.

show more ...

[llvm-objdump] Add --no-print-imm-hex to tests depending on it.

This prepares for an upcoming change to make --print-imm-hex the default
behavior of llvm-objdump. These tests were updated in a semi-

[llvm-objdump] Add --no-print-imm-hex to tests depending on it.

This prepares for an upcoming change to make --print-imm-hex the default
behavior of llvm-objdump. These tests were updated in a semi-automatic
fashion.

See D136972 for details.

show more ...

[XCOFF] support XCOFFObjectWriter for fileHeader and sectionHeaders in 64-bit XCOFF.

This is the first patch to enable the XCOFF64 object writer.
Currently only fileHeader and sectionHeaders are sup

[XCOFF] support XCOFFObjectWriter for fileHeader and sectionHeaders in 64-bit XCOFF.

This is the first patch to enable the XCOFF64 object writer.
Currently only fileHeader and sectionHeaders are supported.

Reviewed By: jhenderson, DiggerLin

Differential Revision: https://reviews.llvm.org/D120861

show more ...

[AIX][AsmPrinter] Print Symbol in comments for TOC load

We are using TOCEntry symbols like `LC..0` in TOC loads,
this is hard to read , at least requiring an additional step to figure
out the loaded

[AIX][AsmPrinter] Print Symbol in comments for TOC load

We are using TOCEntry symbols like `LC..0` in TOC loads,
this is hard to read , at least requiring an additional step to figure
out the loaded symbols.

We should print out the name in comments.

Reviewed By: #powerpc, shchenz

Differential Revision: https://reviews.llvm.org/D102949

show more ...

[XCOFF] add C_FILE symbol at index 0 of symbol table.

This is for XCOFF DWARF support.

Seems when DWARF debug is enable, symbol 0 has special usage
for AIX binder. At least, symbol 0 can not be the

[XCOFF] add C_FILE symbol at index 0 of symbol table.

This is for XCOFF DWARF support.

Seems when DWARF debug is enable, symbol 0 has special usage
for AIX binder. At least, symbol 0 can not be the .text
section. Otherwise, we get some binding time error.

Add correct C_FILE symbol at index 0 here to make AIX binder
work.

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D97117

show more ...

[AIX] Turn -fdata-sections on by default in Clang

Summary:

This patch does the following:
1. Make InitTargetOptionsFromCodeGenFlags() accepts Triple as a
parameter, because some options' default v

[AIX] Turn -fdata-sections on by default in Clang

Summary:

This patch does the following:
1. Make InitTargetOptionsFromCodeGenFlags() accepts Triple as a
parameter, because some options' default value is triple dependant.
2. DataSections is turned on by default on AIX for llc.
3. Test cases change accordingly because of the default behaviour change.
4. Clang Driver passes in -fdata-sections by default on AIX.

Reviewed By: MaskRay, DiggerLin

Differential Revision: https://reviews.llvm.org/D88737

show more ...

Reapply "RegAllocFast: Rewrite and improve"

This reverts commit 73a6a164b84a8195defbb8f5eeb6faecfc478ad4.

Revert "Reapply Revert "RegAllocFast: Rewrite and improve""

This reverts commit 55f9f87da2c2ad791b9e62cccb1c035e037444fa.

Breaks following buildbots:
http://lab.llvm.org:8011/builders/lldb-arm-ubun

Revert "Reapply Revert "RegAllocFast: Rewrite and improve""

This reverts commit 55f9f87da2c2ad791b9e62cccb1c035e037444fa.

Breaks following buildbots:
http://lab.llvm.org:8011/builders/lldb-arm-ubuntu/builds/4306
http://lab.llvm.org:8011/builders/lldb-aarch64-ubuntu/builds/9154

show more ...

Reapply Revert "RegAllocFast: Rewrite and improve"

This reverts commit dbd53a1f0c939a55e7719c39d08179468f9ad3dc.

Needed lldb test updates

Temporarily Revert "RegAllocFast: Rewrite and improve"
as it's breaking a few tests in the lldb test suite.

Bot: http://lab.llvm.org:8011/builders/lldb-arm-ubuntu/builds/4226/steps/test/logs/stdio

Temporarily Revert "RegAllocFast: Rewrite and improve"
as it's breaking a few tests in the lldb test suite.

Bot: http://lab.llvm.org:8011/builders/lldb-arm-ubuntu/builds/4226/steps/test/logs/stdio

This reverts commit c8757ff3aa7dd7a25a6343f6ef74a70c7be04325.

show more ...

RegAllocFast: Rewrite and improve

This rewrites big parts of the fast register allocator. The basic
strategy of doing block-local allocation hasn't changed but I tweaked
several details:

Track regi

RegAllocFast: Rewrite and improve

This rewrites big parts of the fast register allocator. The basic
strategy of doing block-local allocation hasn't changed but I tweaked
several details:

Track register state on register units instead of physical
registers. This simplifies and speeds up handling of register aliases.
Process basic blocks in reverse order: Definitions are known to end
register livetimes when walking backwards (contrary when walking
forward then uses may or may not be a kill so we need heuristics).

Check register mask operands (calls) instead of conservatively
assuming everything is clobbered. Enhance heuristics to detect
killing uses: In case of a small number of defs/uses check if they are
all in the same basic block and if so the last one is a killing use.
Enhance heuristic for copy-coalescing through hinting: We check the
first k defs of a register for COPYs rather than relying on there just
being a single definition. When testing this on the full llvm
test-suite including SPEC externals I measured:

average 5.1% reduction in code size for X86, 4.9% reduction in code on
aarch64. (ranging between 0% and 20% depending on the test) 0.5%
faster compiletime (some analysis suggests the pass is slightly slower
than before, but we more than make up for it because later passes are
faster with the reduced instruction count)

Also adds a few testcases that were broken without this patch, in
particular bug 47278.

Patch mostly by Matthias Braun

show more ...

[PowerPC][AIX] Don't hardcode python invoke command line

We shouldn't assume python exists, we should let lit
to decide whether it is python or python3 and expand the path.

Disable a large test for EXPENSIVE_CHECKS and debug build

Summary:
When running a large test in LLVM_ENABLE_EXPENSIVE_CHECKS=ON mode,
buildbot could hit timeout.
Disable the test when this mode is o

Disable a large test for EXPENSIVE_CHECKS and debug build

Summary:
When running a large test in LLVM_ENABLE_EXPENSIVE_CHECKS=ON mode,
buildbot could hit timeout.
Disable the test when this mode is on.
Also disable it for debug so that the test won't hang for too long.

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D87794

show more ...

[XCOFF] Run resource intense test only on platforms where it makes sense

This is a follow up commit for the issue raised in
https://reviews.llvm.org/D86879

[XCOFF][AIX] Handle TOC entries that could not be reached by positive range in small code model

Summary:
In small code model, AIX assembler could not deal with labels that
could not be reached withi

[XCOFF][AIX] Handle TOC entries that could not be reached by positive range in small code model

Summary:
In small code model, AIX assembler could not deal with labels that
could not be reached within the [-0x8000, 0x8000) range from TOC base.
So when generating the assembly, we would need to help the assembler
by subtracting an offset from the label to keep the actual value
within [-0x8000, 0x8000).

Reviewed By: hubert.reinterpretcast, Xiangling_L

Differential Revision: https://reviews.llvm.org/D86879

show more ...