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2024-10-23Merge llvm-project release/19.x llvmorg-19.1.0-rc2-0-gd033ae172d1cDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project release/19.x llvmorg-19.1.0-rc2-0-gd033ae172d1c. PR: 280562 MFC after: 1 month
2024-10-23Merge llvm-project main llvmorg-19-init-18630-gf2ccf80136a0Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project main llvmorg-19-init-18630-gf2ccf80136a0, the last commit before the upstream release/19.x branch was created. PR: 280562 MFC after: 1 month
2024-04-06Merge llvm-project main llvmorg-18-init-18359-g93248729cfaeDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project main llvmorg-18-init-18359-g93248729cfae, the last commit before the upstream release/18.x branch was created. PR: 276104 MFC after: 1 month
2024-04-06Merge llvm-project main llvmorg-18-init-16595-g7c00a5be5cdeDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project main llvmorg-18-init-16595-g7c00a5be5cde. PR: 276104 MFC after: 1 month
2024-04-06Merge llvm-project main llvmorg-18-init-15088-gd14ee76181fbDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project main llvmorg-18-init-15088-gd14ee76181fb. PR: 276104 MFC after: 1 month
2023-12-08Merge llvm-project main llvmorg-17-init-19304-gd0b54bb50e51Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project main llvmorg-17-init-19304-gd0b54bb50e51, the last commit before the upstream release/17.x branch was created. PR: 273753 MFC after: 1 month
2023-06-22Merge llvm-project main llvmorg-16-init-18548-gb0daacf58f41Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-16-init-18548-gb0daacf58f41. PR: 271047 MFC after: 1 month
2023-02-08Merge llvm-project main llvmorg-15-init-17826-g1f8ae9d7e7e4Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-15-init-17826-g1f8ae9d7e7e4, the last commit before the upstream release/16.x branch was created. PR: 265425 MFC after: 2 weeks
2023-02-08Merge llvm-project main llvmorg-15-init-15358-g53dc0f10787Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-15-init-15358-g53dc0f10787. PR: 265425 MFC after: 2 weeks
2022-05-14Merge llvm-project main llvmorg-14-init-18294-gdb01b123d012Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-14-init-18294-gdb01b123d012, the last commit before the upstream release/14.x branch was created. PR: 261742 MFC after: 2 weeks
2022-05-14Merge llvm-project main llvmorg-14-init-17616-g024a1fab5c35Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-14-init-17616-g024a1fab5c35. PR: 261742 MFC after: 2 weeks
2022-05-14Merge llvm-project main llvmorg-14-init-13186-g0c553cc1af2eDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-14-init-13186-g0c553cc1af2e. PR: 261742 MFC after: 2 weeks
2022-05-14Merge llvm-project main llvmorg-14-init-11187-g222442ec2d71Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-14-init-11187-g222442ec2d71. PR: 261742 MFC after: 2 weeks
2022-05-14Merge llvm-project main llvmorg-14-init-10186-gff7f2cfa959bDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-14-init-10186-gff7f2cfa959b. PR: 261742 MFC after: 2 weeks
2021-11-13Merge llvm-project release/13.x llvmorg-13.0.0-rc1-97-g23ba3732246aDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-13.0.0-rc1-97-g23ba3732246a. PR: 258209 MFC after: 2 weeks
2021-11-13Merge llvm-project main llvmorg-13-init-16847-g88e66fa60ae5Dimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-13-init-16847-g88e66fa60ae5, the last commit before the upstream release/13.x branch was created. PR: 258209 MFC after: 2 weeks
2021-06-13Merge llvm-project main llvmorg-12-init-17869-g8e464dd76befDimitry Andric
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvmorg-12-init-17869-g8e464dd76bef, the last commit before the upstream release/12.x branch was created. PR: 255570 MFC after: 6 weeks
2021-01-03Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmpDimitry Andric
release/11.x llvmorg-11.0.1-rc2-0-g43ff75f2c3f (aka 11.0.1 rc2). MFC after: 4 weeks X-MFC-With: r364284
2020-09-16Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmpDimitry Andric
release/11.x llvmorg-11.0.0-rc2-91-g6e042866c30. MFC after: 6 weeks X-MFC-With: r364284 Notes: svn path=/head/; revision=365807
2020-07-31Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmpDimitry Andric
master 2e10b7a39b9, the last commit before the llvmorg-12-init tag, from which release/11.x was branched. Note that for now, I rolled back all our local changes to make merging easier, and I will reapply the still-relevant ones after updating to 11.0.0-rc1. Notes: svn path=/projects/clang1100-import/; revision=363742
2020-03-05Revert r357259, after the merge from head which added linker scripts forDimitry Andric
stand/i386 boot: Revert upstream lld r371957 (git commit 06bb7dfbd) by Fangrui Song: [ELF] Map the ELF header at imageBase If there is no readonly section, we map: * The ELF header at imageBase+maxPageSize * Program headers at imageBase+maxPageSize+sizeof(Ehdr) * The first section .text at imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers) Due to the interaction between Writer<ELFT>::fixSectionAlignments and LinkerScript::allocateHeaders, `alignDown(p_vaddr(R PT_LOAD)) = alignDown(p_vaddr(RX PT_LOAD))`. The RX PT_LOAD will override the R PT_LOAD at runtime, which is not ideal: ``` // PHDR at 0x401034, should be 0x400034 PHDR 0x000034 0x00401034 0x00401034 0x000a0 0x000a0 R 0x4 // R PT_LOAD contains just Ehdr and program headers. // At 0x401000, should be 0x400000 LOAD 0x000000 0x00401000 0x00401000 0x000d4 0x000d4 R 0x1000 LOAD 0x0000d4 0x004010d4 0x004010d4 0x00001 0x00001 R E 0x1000 ``` * createPhdrs allocates the headers to the R PT_LOAD. * fixSectionAlignments assigns `imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers)` (formula: `alignTo(dot, maxPageSize) + dot % config->maxPageSize`) to addrExpr of .text * allocateHeaders computes the minimum address among SHF_ALLOC sections, i.e. addr(.text) * allocateHeaders sets address of ELF header to `addr(.text)-sizeof(Ehdr)-sizeof(program headers) = imageBase+maxPageSize` The main observation is that when the SECTIONS command is not used, we don't have to call allocateHeaders. This requires an assumption that the presence of PT_PHDR and addresses of headers can be decided regardless of address information. This may seem natural because dot is not manipulated by a linker script. The other thing is that we have to drop the special rule for -T<section> in `getInitialDot`. If -Ttext is smaller than the image base, the headers will not be allocated with the old behavior (allocateHeaders is called) but always allocated with the new behavior. The behavior change is not a problem. Whether and where headers are allocated can vary among linkers, or ld.bfd across different versions (--enable-separate-code or not). It is thus advised to use a linker script with the PHDRS command to have a consistent behavior across linkers. If PT_PHDR is needed, an explicit --image-base can be a simpler alternative. Differential Revision: https://reviews.llvm.org/D67325 llvm-svn: 371957 Notes: svn path=/projects/clang1000-import/; revision=358681
2020-01-29Revert upstream lld r371957 (git commit 06bb7dfbd) by Fangrui Song:Dimitry Andric
[ELF] Map the ELF header at imageBase If there is no readonly section, we map: * The ELF header at imageBase+maxPageSize * Program headers at imageBase+maxPageSize+sizeof(Ehdr) * The first section .text at imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers) Due to the interaction between Writer<ELFT>::fixSectionAlignments and LinkerScript::allocateHeaders, `alignDown(p_vaddr(R PT_LOAD)) = alignDown(p_vaddr(RX PT_LOAD))`. The RX PT_LOAD will override the R PT_LOAD at runtime, which is not ideal: ``` // PHDR at 0x401034, should be 0x400034 PHDR 0x000034 0x00401034 0x00401034 0x000a0 0x000a0 R 0x4 // R PT_LOAD contains just Ehdr and program headers. // At 0x401000, should be 0x400000 LOAD 0x000000 0x00401000 0x00401000 0x000d4 0x000d4 R 0x1000 LOAD 0x0000d4 0x004010d4 0x004010d4 0x00001 0x00001 R E 0x1000 ``` * createPhdrs allocates the headers to the R PT_LOAD. * fixSectionAlignments assigns `imageBase+maxPageSize+sizeof(Ehdr)+sizeof(program headers)` (formula: `alignTo(dot, maxPageSize) + dot % config->maxPageSize`) to addrExpr of .text * allocateHeaders computes the minimum address among SHF_ALLOC sections, i.e. addr(.text) * allocateHeaders sets address of ELF header to `addr(.text)-sizeof(Ehdr)-sizeof(program headers) = imageBase+maxPageSize` The main observation is that when the SECTIONS command is not used, we don't have to call allocateHeaders. This requires an assumption that the presence of PT_PHDR and addresses of headers can be decided regardless of address information. This may seem natural because dot is not manipulated by a linker script. The other thing is that we have to drop the special rule for -T<section> in `getInitialDot`. If -Ttext is smaller than the image base, the headers will not be allocated with the old behavior (allocateHeaders is called) but always allocated with the new behavior. The behavior change is not a problem. Whether and where headers are allocated can vary among linkers, or ld.bfd across different versions (--enable-separate-code or not). It is thus advised to use a linker script with the PHDRS command to have a consistent behavior across linkers. If PT_PHDR is needed, an explicit --image-base can be a simpler alternative. Differential Revision: https://reviews.llvm.org/D67325 llvm-svn: 371957 This causes "ld: error: output file too large: 18446744073707016908 bytes" when linking our loader_4th and loader_lua. Clearly, something is wrong when using -Ttext 0x0: I will file an upstream bug report for this. Notes: svn path=/projects/clang1000-import/; revision=357259
2020-01-24Merge ^/vendor/lvm-project/master up to its last change (upstream commitDimitry Andric
e26a78e70), and resolve conflicts. Notes: svn path=/projects/clang1000-import/; revision=357095
2020-01-23Merge ^/vendor/lld/dist up to its last change, and resolve conflicts.Dimitry Andric
Notes: svn path=/projects/clang1000-import/; revision=357057
2019-12-20Move all sources from the llvm project into contrib/llvm-project.Dimitry Andric
This uses the new layout of the upstream repository, which was recently migrated to GitHub, and converted into a "monorepo". That is, most of the earlier separate sub-projects with their own branches and tags were consolidated into one top-level directory, and are now branched and tagged together. Updating the vendor area to match this layout is next. Notes: svn path=/head/; revision=355940
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