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2020-04-14Update the minimum external LLVM to 8Josh Stone-25/+0
LLVM 8 was released on March 20, 2019, over a year ago.
2020-04-02Add hash of source files in debug infoArlo Siemsen-2/+27
* Adds either an MD5 or SHA1 hash to the debug info. * Adds new unstable option `-Z src-hash-algorithm` to control the hashing algorithm.
2020-03-19Update CreateMemSet() usage for LLVM 10Nikita Popov-0/+5
2020-03-11librustc_codegen_llvm: Use slices instead of 0-terminated stringsTomasz Miąsko-21/+26
Changed functions: * LLVMRustGetOrInsertFunction * LLVMRustGetNamedValue * LLVMRustBuildCall (removed unused name argument) * LLVMRustInlineAsm * LLVMRustInlineAsmVerify * LLVMRustAppendModuleInlineAsm
2020-03-09Use slices in preference to 0-terminated stringsTomasz Miąsko-59/+87
Additionally whenever possible match C API provided by the LLVM.
2020-03-05Change DIBuilderCreateEnumerator signature to match LLVM 9Tomasz Miąsko-4/+4
No functional changes intended.
2020-02-12Use IRBuilder to create memsetNikita Popov-0/+8
To avoid creating memsets with outdated signature. For some reason SROA chokes on this when using NewPM.
2020-01-07Switch to using MaybeAlign APIsNikita Popov-0/+14
The integer versions are deprecated
2020-01-07Handle switch to Expected<StringRef> for section nameNikita Popov-0/+8
2020-01-07Pass isDefined parameter to createGlobalVariableExpression()Nikita Popov-0/+3
2020-01-07Don't handle removed FlagBlockByrefStructNikita Popov-0/+2
2020-01-07Handle removal of llvm::make_unique()Nikita Popov-0/+4
2019-12-04Migrate to LLVM{Get,Set}ValueName2Josh Stone-4/+6
The deprecated `LLVM{Get,Set}ValueName` only work with NUL-terminated strings, but the `2` variants use explicit lengths, which fits better with Rust strings and slices. We now use these in new helper functions `llvm::{get,set}_value_name` that convert to/from `&[u8]`.
2019-12-02Update the minimum external LLVM to 7Josh Stone-37/+0
LLVM 7 is over a year old, which should be plenty for compatibility. The last LLVM 6 holdout was llvm-emscripten, which went away in #65501. I've also included a fix for LLVM 8 lacking `MemorySanitizerOptions`, which was broken by #66522.
2019-11-02Add FFI bindings for Module::getInstructionCount()Simon Heath-0/+8
Just to make it useable for profiling and such inside rustc itself. It was vaguely useful in https://wiki.alopex.li/WhereRustcSpendsItsTime and I figured I might as well upstream it; I may or may not ever get around to doing more with it (hopefully I will), but it may be useful for others.
2019-07-09Pass type to byval attributesNikita Popov-0/+22
2019-04-18Remove the unused LLVMRustIsRustLLVMJosh Stone-8/+0
2019-04-05rustc: Start implementing compat with LLVM 9Alex Crichton-8/+23
This commit doesn't actually migrate to LLVM 9, but it brings our own C++ bindings in line with LLVM 9 and able to compile against tip of tree. The changes made were: * The `MainSubprogram` flag for debuginfo moved between flag types. * Iteration of archive members was tweaked slightly and we have to construct the two iterators before constructing the returned `RustArchiveIterator` value. * The `getOrInsertFunction` binding now returns a wrapper which we use `getCallee()` on to get the value we're interested in.
2019-02-23Implement ffi_returns_twice attributegnzlbg-0/+2
2019-01-26Auto merge of #55641 - nagisa:optimize-attr, r=pnkfelixbors-0/+2
Implement optimize(size) and optimize(speed) attributes This PR implements both `optimize(size)` and `optimize(speed)` attributes. While the functionality itself works fine now, this PR is not yet complete: the code might be messy in places and, most importantly, the compiletest must be improved with functionality to run tests with custom optimization levels. Otherwise the new attribute cannot be tested properly. Oh, and not all of the RFC is implemented – attribute propagation is not implemented for example. # TODO * [x] Improve compiletest so that tests can be written; * [x] Assign a proper error number (E9999 currently, no idea how to allocate a number properly); * [ ] Perhaps reduce the duplication in LLVM attribute assignment code…
2019-01-25Set the DICompileUnit emissionKindJosh Stone-2/+23
2019-01-25Rebase to the llvm-project monorepoJosh Stone-7/+86
The new git submodule src/llvm-project is a monorepo replacing src/llvm and src/tools/{clang,lld,lldb}. This also serves as a rebase for these projects to the new 8.x branch from trunk. The src/llvm-emscripten fork is unchanged for now.
2019-01-24Implement optimize(size) and optimize(speed)Simonas Kazlauskas-0/+2
2018-12-25Remove licensesMark Rousskov-10/+0
2018-12-09Bump minimum required LLVM version to 6.0Nikita Popov-15/+0
2018-12-03Auto merge of #55010 - tromey:Bug-9224-generic-parameters, r=michaelwoeristerbors-4/+6
Add template parameter debuginfo to generic types This changes debuginfo generation to add template parameters to generic types. With this change the DWARF now has DW_TAG_template_type_param for types, not just for functions, like: <2><40d>: Abbrev Number: 6 (DW_TAG_structure_type) <40e> DW_AT_name : (indirect string, offset: 0x375): Generic<i32> <412> DW_AT_byte_size : 4 <413> DW_AT_alignment : 4 ... <3><41f>: Abbrev Number: 8 (DW_TAG_template_type_param) <420> DW_AT_type : <0x42a> <424> DW_AT_name : (indirect string, offset: 0xa65e): T Closes #9224
2018-11-30Enable -mergefunc-use-aliasesNikita Popov-0/+8
If the Rust LLVM fork is used, enable the -mergefunc-use-aliases flag, which will create aliases for merged functions, rather than inserting a call from one to the other. A number of codegen tests needed to be adjusted, because functions that previously fell below the thunk limit are now being merged. Merging is prevented either using -C no-prepopulate-passes, or by making the functions non-identical. I expect that this is going to break something, somewhere, because it isn't able to deal with aliases properly, but we won't find out until we try :) This fixes #52651.
2018-11-29Add template parameter debuginfo to generic typesTom Tromey-4/+6
This changes debuginfo generation to add template parameters to generic types. With this change the DWARF now has DW_TAG_template_type_param for types, not just for functions, like: <2><40d>: Abbrev Number: 6 (DW_TAG_structure_type) <40e> DW_AT_name : (indirect string, offset: 0x375): Generic<i32> <412> DW_AT_byte_size : 4 <413> DW_AT_alignment : 4 ... <3><41f>: Abbrev Number: 8 (DW_TAG_template_type_param) <420> DW_AT_type : <0x42a> <424> DW_AT_name : (indirect string, offset: 0xa65e): T Closes #9224
2018-11-25Conditionally compile in only the extra argument.Edd Barrett-7/+4
2018-11-25Make Rustc build with LLVM trunk.Edd Barrett-0/+7
2018-11-11Auto merge of #55698 - nikic:remove-llvm-4-support, r=alexcrichtonbors-158/+2
Remove support for building against LLVM 4 With emscripten removed in #55626, we no longer need to support building against LLVM 4.
2018-11-08Rollup merge of #55633 - nikic:memcpy-align, r=nagisaMark Rousskov-0/+34
Support memcpy/memmove with differing src/dst alignment If LLVM 7 is used, generate memcpy/memmove with differing src/dst alignment. I've added new FFI functions to construct these through the builder API, which is more convenient than dealing with differing intrinsic signatures depending on the LLVM version. Fixes #49740.
2018-11-05Remove support for building against LLVM 4Nikita Popov-158/+2
With emscripten removed in #55626, we no longer need to support building against LLVM 4.
2018-11-04Support memcpy/memmove with differing src/dst alignmentNikita Popov-0/+34
If LLVM 7 is used, generate memcpy/memmove with differing src/dst alignment. I've added new FFI functions to construct these through the builder API, which is more convenient than dealing with differing intrinsic signatures depending on the LLVM version.
2018-11-01Remove checks for LLVM < 4.0Nikita Popov-10/+0
While we still have to support LLVM 4.0 for Emscripten, we can drop checks for LLVM >= 4.0 and < 4.0.
2018-10-30Fix DWARF generation for enumsTom Tromey-2/+47
The DWARF generated for Rust enums was always somewhat unusual. Rather than using DWARF constructs directly, it would emit magic field names like "RUST$ENCODED$ENUM$0$Name" and "RUST$ENUM$DISR". Since PR #45225, though, even this has not worked -- the ad hoc scheme was not updated to handle the wider variety of niche-filling layout optimizations now available. This patch changes the generated DWARF to use the standard tags meant for this purpose; namely, DW_TAG_variant and DW_TAG_variant_part. The patch to implement this went in to LLVM 7. In order to work with older versions of LLVM, and because LLVM doesn't do anything here for PDB, the existing code is kept as a fallback mode. Support for this DWARF is in the Rust lldb and in gdb 8.2. Closes #32920 Closes #32924 Closes #52762 Closes #53153
2018-10-12exit with status code 101 on fatal LLVM errorAndy Russell-0/+24
Fixes #54992.
2018-10-11Support for disabling the PLT on ELF targetsGabriel Majeri-0/+2
Disable the PLT where possible to improve performance for indirect calls into shared libraries. This optimization is enabled by default where possible. - Add the `NonLazyBind` attribute to `rustllvm`: This attribute informs LLVM to skip PLT calls in codegen. - Disable PLT unconditionally: Apply the `NonLazyBind` attribute on every function. - Only enable no-plt when full relro is enabled: Ensures we only enable it when we have linker support. - Add `-Z plt` as a compiler option
2018-09-25codegen_llvm: check inline assembly constraints with LLVMLevente Kurusa-0/+5
LLVM provides a way of checking whether the constraints and the actual inline assembly make sense. This commit introduces a check before emitting code for the inline assembly. If LLVM rejects the inline assembly (or its constraints), then the compiler emits an error E0668 ("malformed inline assembly"). Signed-off-by: Levente Kurusa <lkurusa@acm.org>
2018-08-07Auto merge of #51007 - AstralSorcerer:master, r=nagisabors-0/+10
Make globals with private linkage unnamed. Fixes #50862. cc @oli-obk @nagisa
2018-07-31Make globals with private linkage unnamed. Fixes #50862.Colin Pronovost-0/+10
2018-07-31rustc: Handle linker diagnostic from LLVMAlex Crichton-0/+3
Previously linker diagnostic were being hidden when two modules were linked together but failed to link. This commit fixes the situation by ensuring that we have a diagnostic handler installed and also adds support for handling linker diagnostics.
2018-07-30rustc_codegen_llvm: remove more unused functions.Irina Popa-9/+0
2018-07-09still support LLVM4 for emscriptengnzlbg-1/+167
2018-07-09bump minimum LLVM version to 5.0gnzlbg-198/+3
2018-03-27Auto merge of #49249 - gnzlbg:simd_minmax, r=alexcrichtonbors-0/+20
implement minmax intrinsics This adds the `simd_{fmin,fmax}` intrinsics, which do a vertical (lane-wise) `min`/`max` for floating point vectors that's equivalent to Rust's `min`/`max` for `f32`/`f64`. It might make sense to make `{f32,f64}::{min,max}` use the `minnum` and `minmax` intrinsics as well. --- ~~HELP: I need some help with these. Either I should go to sleep or there must be something that I must be missing. AFAICT I am calling the `maxnum` builder correctly, yet rustc/LLVM seem to insert a call to `llvm.minnum` there instead...~~ EDIT: Rust's LLVM version is too old :/
2018-03-26Auto merge of #48346 - emilio:pgo, r=alexcrichtonbors-0/+3
Add basic PGO support. This PR adds two mutually exclusive options for profile usage and generation using LLVM's instruction profile generation (the same as clang uses), `-C pgo-use` and `-C pgo-gen`. See each commit for details.
2018-03-26require llvm 6gnzlbg-0/+11
2018-03-26implement minmax intrinsicsgnzlbg-0/+9
2018-03-24Polyfill LLVMBuildExactUDivScott McMurray-0/+8
It was added 32 days after LLVM 3.9 shipped.
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