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344213 |
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16-Feb-2019 |
dim |
Merge clang 7.0.1 and several follow-up changes
MFC r318594:
Add libc++experimental.a for std::experimental support
This adds a separate library for supporting std::experimental features. It is purposefully static, and must be explicitly linked into programs using -lc++experimental.
PLEASE NOTE: there is NO WARRANTY as to any stability or continuing existence of the features in the std::experimental parts of the C++ library!
Reviewed by: ed Differential Revision: https://reviews.freebsd.org/D10840
MFC r318598:
Add PICFLAG to build libc++experimental.a, so it can be used in all situations.
Noticed by: kib
r336969 | emaste | 2018-07-31 16:12:09 +0200 (Tue, 31 Jul 2018) | 13 lines
llvm: [ELF][ARM] Add Arm ABI names for float ABI ELF Header flags
The ELF for the Arm architecture document defines, for EF_ARM_EABI_VER5 and above, the flags EF_ARM_ABI_FLOAT_HARD and EF_ARM_ABI_FLOAT_SOFT. These have been defined to be compatible with the existing EF_ARM_VFP_FLOAT and EF_ARM_SOFT_FLOAT used by gcc for EF_ARM_EABI_UNKNOWN.
This patch adds the flags in addition to the existing ones so that any code depending on the old names will still work.
Obtained from: llvm r338370 by Peter Smith
r336970 | emaste | 2018-07-31 16:14:41 +0200 (Tue, 31 Jul 2018) | 9 lines
llvm: [ARM] Complete enumeration values for Tag_ABI_VFP_args
The LLD implementation of Tag_ABI_VFP_args needs to check the rarely seen values of 3 (toolchain specific) and 4 compatible with both Base and VFP. Add the missing enumeration values so that LLD can refer to them without having to use the raw numbers.
Obtained from: llvm r338373 by Peter Smith
r336972 | emaste | 2018-07-31 17:25:03 +0200 (Tue, 31 Jul 2018) | 37 lines
lld: [ELF][ARM] Implement support for Tag_ABI_VFP_args
The Tag_ABI_VFP_args build attribute controls the procedure call standard used for floating point parameters on ARM. The values are:
0 - Base AAPCS (FP Parameters passed in Core (Integer) registers 1 - VFP AAPCS (FP Parameters passed in FP registers) 2 - Toolchain specific (Neither Base or VFP) 3 - Compatible with all (No use of floating point parameters)
If the Tag_ABI_VFP_args build attribute is missing it has an implicit value of 0.
We use the attribute in two ways:
* Detect a clash in calling convention between Base, VFP and Toolchain.
we follow ld.bfd's lead and do not error if there is a clash between an implicit Base AAPCS caused by a missing attribute. Many projects including the hard-float (VFP AAPCS) version of glibc contain assembler files that do not use floating point but do not have Tag_ABI_VFP_args.
* Set the EF_ARM_ABI_FLOAT_SOFT or EF_ARM_ABI_FLOAT_HARD ELF header flag
for Base or VFP AAPCS respectively. This flag is used by some ELF loaders.
References: * Addenda to, and Errata in, the ABI for the ARM Architecture for Tag_ABI_VFP_args * Elf for the ARM Architecture for ELF header flags
Fixes LLVM PR36009
PR: 229050 Obtained from: llvm r338377 by Peter Smith
r337282 | alc | 2018-08-04 04:30:51 +0200 (Sat, 04 Aug 2018) | 7 lines
Set the default image base on arm64 and i386 to a superpage-aligned address.
Reviewed by: emaste, markj Discussed with: dim Differential Revision: https://reviews.freebsd.org/D16385
r339304 | emaste | 2018-10-11 15:19:17 +0200 (Thu, 11 Oct 2018) | 13 lines
lld: set sh_link and sh_info for .rela.plt sections
ELF spec says that for SHT_REL and SHT_RELA sh_link should reference the associated string table and sh_info should reference the "section to which the relocation applies." ELF Tool Chain's elfcopy / strip use this (in part) to control whether or not the relocation entry is copied to the output.
LLVM PR 37538 https://bugs.llvm.org/show_bug.cgi?id=37538
Approved by: re (kib) Obtained from: llvm r344226 (backported for 6.0)
MFC r341825:
Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to the upstream release_70 branch r348686 (effectively, 7.0.1 rc3). The release will follow very soon, but no more functional changes are expected.
Release notes for llvm, clang and lld 7.0.0 are available here: <http://releases.llvm.org/7.0.0/docs/ReleaseNotes.html> <http://releases.llvm.org/7.0.0/tools/clang/docs/ReleaseNotes.html> <http://releases.llvm.org/7.0.0/tools/lld/docs/ReleaseNotes.html>
PR: 230240, 230355 Relnotes: yes
MFC r342123:
Update clang, llvm, lld, lldb, compiler-rt and libc++ version number to 7.0.1 release r349250. There were no functional changes since the 7.0.1 rc3 import.
PR: 230240, 230355 Relnotes: yes
r343429 | emaste | 2019-01-25 15:46:13 +0100 (Fri, 25 Jan 2019) | 16 lines
clang: default to DWARF 4 as of FreeBSD 13
FreeBSD previously defaulted to DWARF 2 because several tools (gdb, ctfconvert, etc.) did not support later versions. These have either been fixed or are deprecated.
Note that gdb 6 still exists but has been moved out of $PATH into /usr/libexec and is intended only for use by crashinfo(8). The kernel build sets the DWARF version explicitly via -gdwarf2, so this should have no effect there.
PR: 234887 [exp-run] Reviewed by: markj Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D17930
MFC r343916:
Pull in r352607 from upstream llvm trunk (by Craig Topper):
[X86] Add FPSW as a Def on some FP instructions that were missing it.
Pull in r353141 from upstream llvm trunk (by Craig Topper):
[X86] Connect the default fpsr and dirflag clobbers in inline assembly to the registers we have defined for them.
Summary: We don't currently map these constraints to physical register numbers so they don't make it to the MachineIR representation of inline assembly.
This could have problems for proper dependency tracking in the machine schedulers though I don't have a test case that shows that.
Reviewers: rnk
Reviewed By: rnk
Subscribers: eraman, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D57641
Pull in r353489 from upstream llvm trunk (by Craig Topper):
[X86] Add FPCW as a register and start using it as an implicit use on floating point instructions.
Summary: FPCW contains the rounding mode control which we manipulate to implement fp to integer conversion by changing the roudning mode, storing the value to the stack, and then changing the rounding mode back. Because we didn't model FPCW and its dependency chain, other instructions could be scheduled into the middle of the sequence.
This patch introduces the register and adds it as an implciit def of FLDCW and implicit use of the FP binary arithmetic instructions and store instructions. There are more instructions that need to be updated, but this is a good start. I believe this fixes at least the reduced test case from PR40529.
Reviewers: RKSimon, spatel, rnk, efriedma, andrew.w.kaylor
Subscribers: dim, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D57735
These should fix a problem in clang 7.0 where it would sometimes emit long double floating point instructions in a slightly wrong order, leading to failures in our libm tests. In particular, the cbrt_test test case 'cbrtl_powl' and the trig_test test case 'reduction'.
Also bump __FreeBSD_cc_version, to be able to detect this in our test suite.
Reported by: lwhsu PR: 234040 Upstream PR: https://bugs.llvm.org/show_bug.cgi?id=40206
MFC r344056:
Pull in r339734 from upstream llvm trunk (by Eli Friedman):
[ARM] Make PerformSHLSimplify add nodes to the DAG worklist correctly.
Intentionally excluding nodes from the DAGCombine worklist is likely to lead to weird optimizations and infinite loops, so it's generally a bad idea.
To avoid the infinite loops, fix DAGCombine to use the isDesirableToCommuteWithShift target hook before performing the transforms in question, and implement the target hook in the ARM backend disable the transforms in question.
Fixes https://bugs.llvm.org/show_bug.cgi?id=38530 . (I don't have a reduced testcase for that bug. But we should have sufficient test coverage for PerformSHLSimplify given that we're not playing weird tricks with the worklist. I can try to bugpoint it if necessary, though.)
Differential Revision: https://reviews.llvm.org/D50667
This should fix a possible hang when compiling sys/dev/nxge/if_nxge.c (which exists now only in the stable/11 branch) for arm.
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324023 |
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26-Sep-2017 |
dim |
Merge clang, llvm, lld, lldb, compiler-rt and libc++ 5.0.0 release.
MFC r309126 (by emaste):
Correct lld llvm-tblgen dependency file name
MFC r309169:
Get rid of separate Subversion mergeinfo properties for llvm-dwarfdump and llvm-lto. The mergeinfo confuses Subversion enormously, and these directories will just use the mergeinfo for llvm itself.
MFC r312765:
Pull in r276136 from upstream llvm trunk (by Wei Mi):
Use ValueOffsetPair to enhance value reuse during SCEV expansion.
In D12090, the ExprValueMap was added to reuse existing value during SCEV expansion. However, const folding and sext/zext distribution can make the reuse still difficult.
A simplified case is: suppose we know S1 expands to V1 in ExprValueMap, and S1 = S2 + C_a S3 = S2 + C_b where C_a and C_b are different SCEVConstants. Then we'd like to expand S3 as V1 - C_a + C_b instead of expanding S2 literally. It is helpful when S2 is a complex SCEV expr and S2 has no entry in ExprValueMap, which is usually caused by the fact that S3 is generated from S1 after const folding.
In order to do that, we represent ExprValueMap as a mapping from SCEV to ValueOffsetPair. We will save both S1->{V1, 0} and S2->{V1, C_a} into the ExprValueMap when we create SCEV for V1. When S3 is expanded, it will first expand S2 to V1 - C_a because of S2->{V1, C_a} in the map, then expand S3 to V1 - C_a + C_b.
Differential Revision: https://reviews.llvm.org/D21313
This should fix assertion failures when building OpenCV >= 3.1.
PR: 215649
MFC r312831:
Revert r312765 for now, since it causes assertions when building lang/spidermonkey24.
Reported by: antoine PR: 215649
MFC r316511 (by jhb):
Add an implementation of __ffssi2() derived from __ffsdi2().
Newer versions of GCC include an __ffssi2() symbol in libgcc and the compiler can emit calls to it in generated code. This is true for at least GCC 6.2 when compiling world for mips and mips64.
Reviewed by: jmallett, dim Sponsored by: DARPA / AFRL Differential Revision: https://reviews.freebsd.org/D10086
MFC r318601 (by adrian):
[libcompiler-rt] add bswapdi2/bswapsi2
This is required for mips gcc 6.3 userland to build/run.
Reviewed by: emaste, dim Approved by: emaste Differential Revision: https://reviews.freebsd.org/D10838
MFC r318884 (by emaste):
lldb: map TRAP_CAP to a trace trap
In the absense of a more specific handler for TRAP_CAP (generated by ENOTCAPABLE or ECAPMODE while in capability mode) treat it as a trace trap.
Example usage (testing the bug in PR219173):
% proccontrol -m trapcap lldb usr.bin/hexdump/obj/hexdump -- -Cv -s 1 /bin/ls ... (lldb) run Process 12980 launching Process 12980 launched: '.../usr.bin/hexdump/obj/hexdump' (x86_64) Process 12980 stopped * thread #1, stop reason = trace frame #0: 0x0000004b80c65f1a libc.so.7`__sys_lseek + 10 ...
In the future we should have LLDB control the trapcap procctl itself (as it does with ASLR), as well as report a specific stop reason. This change eliminates an assertion failure from LLDB for now.
MFC r319796:
Remove a few unneeded files from libllvm, libclang and liblldb.
MFC r319885 (by emaste):
lld: ELF: Fix ICF crash on absolute symbol relocations.
If two sections contained relocations to absolute symbols with the same value we would crash when trying to access their sections. Add a check that both symbols point to sections before accessing their sections, and treat absolute symbols as equal if their values are equal.
Obtained from: LLD commit r292578
MFC r319918:
Revert r319796 for now, it can cause undefined references when linking in some circumstances.
Reported by: Shawn Webb <shawn.webb@hardenedbsd.org>
MFC r319957 (by emaste):
lld: Add armelf emulation mode
Obtained from: LLD r305375
MFC r321369:
Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 5.0.0 (trunk r308421). Upstream has branched for the 5.0.0 release, which should be in about a month. Please report bugs and regressions, so we can get them into the release.
Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11 support to build; see UPDATING for more information.
MFC r321420:
Add a few more object files to liblldb, which should solve errors when linking the lldb executable in some cases. In particular, when the -ffunction-sections -fdata-sections options are turned off, or ineffective.
Reported by: Shawn Webb, Mark Millard
MFC r321433:
Cleanup stale Options.inc files from the previous libllvm build for clang 4.0.0. Otherwise, these can get included before the two newly generated ones (which are different) for clang 5.0.0.
Reported by: Mark Millard
MFC r321439 (by bdrewery):
Move llvm Options.inc hack from r321433 for NO_CLEAN to lib/clang/libllvm.
The files are only ever generated to .OBJDIR, not to WORLDTMP (as a sysroot) and are only ever included from a compilation. So using a beforebuild target here removes the file before the compilation tries to include it.
MFC r321664:
Pull in r308891 from upstream llvm trunk (by Benjamin Kramer):
[CodeGenPrepare] Cut off FindAllMemoryUses if there are too many uses.
This avoids excessive compile time. The case I'm looking at is Function.cpp from an old version of LLVM that still had the giant memcmp string matcher in it. Before r308322 this compiled in about 2 minutes, after it, clang takes infinite* time to compile it. With this patch we're at 5 min, which is still bad but this is a pathological case.
The cut off at 20 uses was chosen by looking at other cut-offs in LLVM for user scanning. It's probably too high, but does the job and is very unlikely to regress anything.
Fixes PR33900.
* I'm impatient and aborted after 15 minutes, on the bug report it was killed after 2h.
Pull in r308986 from upstream llvm trunk (by Simon Pilgrim):
[X86][CGP] Reduce memcmp() expansion to 2 load pairs (PR33914)
D35067/rL308322 attempted to support up to 4 load pairs for memcmp inlining which resulted in regressions for some optimized libc memcmp implementations (PR33914).
Until we can match these more optimal cases, this patch reduces the memcmp expansion to a maximum of 2 load pairs (which matches what we do for -Os).
This patch should be considered for the 5.0.0 release branch as well
Differential Revision: https://reviews.llvm.org/D35830
These fix a hang (or extremely long compile time) when building older LLVM ports.
Reported by: antoine PR: 219139
MFC r321719:
Pull in r309503 from upstream clang trunk (by Richard Smith):
PR33902: Invalidate line number cache when adding more text to existing buffer.
This led to crashes as the line number cache would report a bogus line number for a line of code, and we'd try to find a nonexistent column within the line when printing diagnostics.
This fixes an assertion when building the graphics/champlain port.
Reported by: antoine, kwm PR: 219139
MFC r321723:
Upgrade our copies of clang, llvm, lld and lldb to r309439 from the upstream release_50 branch. This is just after upstream's 5.0.0-rc1.
MFC r322320:
Upgrade our copies of clang, llvm and libc++ to r310316 from the upstream release_50 branch.
MFC r322326 (by emaste):
lldb: Make i386-*-freebsd expression work on JIT path
* Enable i386 ABI creation for freebsd * Added an extra argument in ABISysV_i386::PrepareTrivialCall for mmap syscall * Unlike linux, the last argument of mmap is actually 64-bit(off_t). This requires us to push an additional word for the higher order bits. * Prior to this change, ktrace dump will show mmap failures due to invalid argument coming from the 6th mmap argument.
Submitted by: Karnajit Wangkhem Differential Revision: https://reviews.llvm.org/D34776
MFC r322360 (by emaste):
lldb: Report inferior signals as signals, not exceptions, on FreeBSD
This is the FreeBSD equivalent of LLVM r238549.
This serves 2 purposes:
* LLDB should handle inferior process signals SIGSEGV/SIGILL/SIGBUS/ SIGFPE the way it is suppose to be handled. Prior to this fix these signals will neither create a coredump, nor exit from the debugger or work for signal handling scenario. * eInvalidCrashReason need not report "unknown crash reason" if we have a valid si_signo
llvm.org/pr23699
Patch by Karnajit Wangkhem
Differential Revision: https://reviews.llvm.org/D35223
Submitted by: Karnajit Wangkhem Obtained from: LLVM r310591
MFC r322474 (by emaste):
lld: Add `-z muldefs` option.
Obtained from: LLVM r310757
MFC r322740:
Upgrade our copies of clang, llvm, lld and libc++ to r311219 from the upstream release_50 branch.
MFC r322855:
Upgrade our copies of clang, llvm, lldb and compiler-rt to r311606 from the upstream release_50 branch.
As of this version, lib/msun's trig test should also work correctly again (see bug 220989 for more information).
PR: 220989
MFC r323112:
Upgrade our copies of clang, llvm, lldb and compiler-rt to r312293 from the upstream release_50 branch. This corresponds to 5.0.0 rc4.
As of this version, the cad/stepcode port should now compile in a more reasonable time on i386 (see bug 221836 for more information).
PR: 221836
MFC r323245:
Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 5.0.0 release (upstream r312559).
Release notes for llvm, clang and lld will be available here soon: <http://releases.llvm.org/5.0.0/docs/ReleaseNotes.html> <http://releases.llvm.org/5.0.0/tools/clang/docs/ReleaseNotes.html> <http://releases.llvm.org/5.0.0/tools/lld/docs/ReleaseNotes.html>
Relnotes: yes
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314564 |
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02-Mar-2017 |
dim |
Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 4.0.0 (branches/release_40 296509). The release will follow soon.
Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11 support to build; see UPDATING for more information.
Also note that as of 4.0.0, lld should be able to link the base system on amd64 and aarch64. See the WITH_LLD_IS_LLD setting in src.conf(5). Though please be aware that this is work in progress.
Release notes for llvm, clang and lld will be available here: <http://releases.llvm.org/4.0.0/docs/ReleaseNotes.html> <http://releases.llvm.org/4.0.0/tools/clang/docs/ReleaseNotes.html> <http://releases.llvm.org/4.0.0/tools/lld/docs/ReleaseNotes.html>
Thanks to Ed Maste, Jan Beich, Antoine Brodin and Eric Fiselier for their help.
Relnotes: yes Exp-run: antoine PR: 215969, 216008 MFC after: 1 month
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