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Fixes #83854
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This updates the LLVM submodule with recent LLVM 12.x fixes. In
particular, it resolves an assertion failure when targeting
AArch64 at O0.
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This fixes the temporary regression introduced in #84339 where the wasm
target uses `fpto{s,u}i` intrinsics but the codegen for those intrinsics
with the `+nontrapping-fptoint` LLVM feature wasn't very good (aka it
didn't use the wasm instruction). The fixes brought in here fix that and
also implement the second-to-last simd instruction in LLVM.
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Fixes #83467
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A partial fix for #83139
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Adds a commit with support for i64 simd comparisons for the wasm target
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Just a small bug fix for opcode numberings, not too major.
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This is a continuation of https://github.com/rust-lang/llvm-project/pull/96
to continue to make progress on updating Rust's support for SIMD
intrinsics on WebAssembly to the latest version of the specification.
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This updates the LLVM submodule to pick up a backported patch
to enable MemorySSA-based MemCpyOpt, which is capable of optimizing
away memcpy's across basic blocks.
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This backports two compile-time improvements from the LLVM 13
branch, which reduce the number of alias analysis queries.
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This submodule update reverts <https://reviews.llvm.org/D81803>.
While that change is meant to fix a real bug, [LLVM PR42623], it caused
new permission errors on Windows 7 that make it unable to build any
archives. This is probably the same root cause as [LLVM PR48378].
Fixes #81051. We'll file a new Rust issue to track the LLVM resolution.
[LLVM PR42623]: https://bugs.llvm.org/show_bug.cgi?id=42623
[LLVM PR48378]: https://bugs.llvm.org/show_bug.cgi?id=48378
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Includes https://github.com/rust-lang/llvm-project/pull/90 in
particular.
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- [GlobalISel][IRTranslator] Fix a crash when the use of an extractvalue is a non-dominated metadata use.
- [asan] Use dynamic shadow memory position on Apple Silicon macOS
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Fixes #76387
Pulls in https://github.com/rust-lang/llvm-project/pull/82
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Updates the Rust LLVM fork to pull in a fix for a stack corruption
bug in AVR platform interrupt code lowering.
Fixes #75504
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This patch adds support for the LLVM cmse_nonsecure_entry attribute.
This is a target-dependent attribute that only has sense for the
thumbv8m Rust targets.
You can find more information about this attribute here:
https://developer.arm.com/documentation/ecm0359818/latest/
Signed-off-by: Hugues de Valon <hugues.devalon@arm.com>
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https://github.com/rust-lang/llvm-project/pull/73
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includes LVI segfault fix
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When cross-compiling, the LLVM build system recurses to build tools
that need to run on the host system. However, since we pass cmake defines
to set the compiler and target, LLVM still compiles these tools for the
target system, rather than the host. The tools then fail to execute
during the LLVM build.
This change sets defines for the tools that need to run on the
host (llvm-nm, llvm-tablegen, and llvm-config), so that the LLVM build
does not attempt to build them, and instead relies on the tools already built.
If compiling with clang-cl, this change also adds the `--target` option
to specify the target triple. MSVC compilers do not require this, since there
is a separate compiler binary for cross-compilation.
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recently merged
This commit updates rustc's LLVM submodule to include new AVR-specific
fixes recently merged on the Rust LLVM 'rustc/10.0-2020-05-05' branch.
All of these cherry-picked commits exist in upstream LLVM and were
cherry-picked into Rust's LLVM fork in commit 6c040dd86ed.
|- 6c040dd86ed Merge pull request #66 from dylanmckay/avr-pick-upstream-llvm-fixes
|- 12dfdd3aed7 [AVR] Rewrite the function calling convention.
|- 118ac53f12b [AVR] Don't adjust for instruction size
|- bc27c282e13 [AVR] Fix miscompilation of zext + add
|- cfbe205a7e8 [AVR] Remove faulty stack pushing behavior
|- 143e1469e96 [AVR] Fix stack size in functions with a frame pointer
|- 6b2445d841e [LLVM][AVR] Support for R_AVR_6 fixup
|- 93ee4da19cf [AVR] Fix I/O instructions on XMEGA
|- 962c2415ffb [AVR] Do not place functions in .progmem.data
|- 65b8b170aef [AVR] Do not use divmod calls for bigger integers
|- 93a3b595d1c [AVR] Generalize the previous interrupt bugfix to signal
|- handlers too
|- cc4286349b4 [AVR] Respect the 'interrupt' function attribute
|- 954d0a92205 [AVR] Fix reads of uninitialized variables from constructor of AVRSubtarget
|- 1c0ddae73c9 [AVR] Fix read of uninitialized variable AVRSubtarget:::ELFArch
|- 0ed0823fe60 [AVR] Fix incorrect register state for LDRdPtr
|- 96075fc433d [AVR] Don't adjust addresses by 2 for absolute values
|- 6dfc55ba53b [AVR] Use correct register class for mul instructions
These changes include both correctness fixes and LLVM assertion error
fixes. Once all of these commits have been cherry-picked, all of the
LLVM plumbing for rust-lang/master to compile the AVR blink program will
be in place. Once this commit is merged, only PR rust-lang/rust#73270 will
be blocking successful compilation and emission of the AVR LED blink program.
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https://github.com/rust-lang/llvm-project/pull/64
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This commit is an attempted resurrection of #70458 where LLVM bitcode
emitted by rustc into rlibs is stored into object file sections rather
than in a separate file. The main rationale for doing this is that when
rustc emits bitcode it will no longer use a custom compression scheme
which makes it both easier to interoperate with existing tools and also
cuts down on compile time since this compression isn't happening.
The blocker for this in #70458 turned out to be that native linkers
didn't handle the new sections well, causing the sections to either
trigger bugs in the linker or actually end up in the final linked
artifact. This commit attempts to address these issues by ensuring that
native linkers ignore the new sections by inserting custom flags with
module-level inline assembly.
Note that this does not currently change the API of the compiler at all.
The pre-existing `-C bitcode-in-rlib` flag is co-opted to indicate
whether the bitcode should be present in the object file or not.
Finally, note that an important consequence of this commit, which is also
one of its primary purposes, is to enable rustc's `-Clto` bitcode
loading to load rlibs produced with `-Clinker-plugin-lto`. The goal here
is that when you're building with LTO Cargo will tell rustc to skip
codegen of all intermediate crates and only generate LLVM IR. Today
rustc will generate both object code and LLVM IR, but the object code is
later simply thrown away, wastefully.
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