rust/src/rustllvm/PassWrapper.cpp, branch 1.28.0

Rename trans to codegen everywhere.

2018-05-17T12:08:30+00:00

Reenable the MergeFunctions pass

2018-05-15T19:10:40+00:00

The crash that happened in #23566 doesn't happen anymore with the LLVM mergefunc pass enabled and it hugely reduces code size (for example it shaves off 10% of the final Servo executable). This patch reenables it.

Set PrepareForThinLTO flag when using ThinLTO

2018-05-12T12:07:20+00:00

The LLVM PassManager has a PrepareForThinLTO flag, which is intended when compilation occurs in conjunction with linking by ThinLTO. The flag has two effects: * The NameAnonGlobal pass is run after all other passes, which ensures that all globals have a name. * In optimized builds, a number of late passes (mainly related to vectorization and unrolling) are disabled, on the rationale that these a) will increase codesize of the intermediate artifacts and b) will be run by ThinLTO again anyway. This patch enables the use of PrepareForThinLTO if Thin or ThinLocal linking is used. The background for this change is the CI failure in #49479, which we assume to be caused by the NameAnonGlobal pass not being run. As this changes which passes LLVM runs, this might have performance (or other) impact, so we want to land this separately.

Enable target_feature on any LLVM 6+

2018-03-27T19:27:45+00:00

In `LLVMRustHasFeature()`, rather than using `MCInfo->getFeatureTable()` that is specific to Rust's LLVM fork, we can use this in LLVM 6: /// Check whether the subtarget features are enabled/disabled as per /// the provided string, ignoring all other features. bool checkFeatures(StringRef FS) const; Now rustc using external LLVM can also have `target_feature`.

try to fix the build on older LLVM versions.

2018-03-25T01:30:06+00:00

rustc_llvm: rustc_trans: Thread the PGO config down to the pass manager builder.

2018-03-25T01:30:04+00:00

Signed-off-by: Emilio Cobos Álvarez

rustc: Add some defines for LLVM 7 compat

2018-01-30T20:11:31+00:00

I was testing out the tip support to see what's going on with wasm, and this was I believe the only issue encountered with LLVM 7 support so far.

llvm6: Missing include for LLVM 6 in PassWrapper.cpp

2018-01-24T15:18:01+00:00

Just bog-standard compile error fixed by adding some new header files

llvm6: CodeModel::{JIT,}Default no longer exists

2018-01-24T15:18:01+00:00

LLVM has since removed the `CodeModel::Default` enum value in favor of an `Optional` implementationg throughout LLVM. Let's mirror the same change in Rust and update the various bindings we call accordingly. Removed in llvm-mirror/llvm@9aafb854c

rustc_trans: remove unused `TargetDataRef` accessor.

2018-01-14T06:52:16+00:00