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bors 49c36bf16f Auto merge of #36306 - nagisa:mir-local-cleanup, r=eddyb 
A way to remove otherwise unused locals from MIR

There is a certain amount of desire for a pass which cleans up the provably unused variables (no assignments or reads). There has been an implementation of such pass by @scottcarr, and another (two!) implementations by me in my own dataflow efforts.

PR like https://github.com/rust-lang/rust/pull/35916 proves that this pass is useful even on its own, which is why I cherry-picked it out from my dataflow effort.

@nikomatsakis previously expressed concerns over this pass not seeming to be very cheap to run and therefore unsuitable for regular cleanup duties. Turns out, regular cleanup of local declarations is not at all necessary, at least now, because majority of passes simply do not (or should not) care about them. That’s why it is viable to only run this pass once (perhaps a few more times in the future?) per function, right before translation.

r? @eddyb or @nikomatsakis
2016-11-03 22:58:55 -07:00
..
bootstrap Use quieter test output when running tests on Travis CI. 2016-10-30 17:31:17 -04:00
build_helper run rustfmt on various folders 2016-10-16 15:41:01 +05:30
compiler-rt@f03ba5a4e8 Update src/compiler-rt to incoporate fix for UB in floatsidf. Fix #36518. 2016-09-29 13:54:06 +02:00
doc Rollup merge of #37495 - buntine:master, r=steveklabnik 2016-11-01 16:15:52 +01:00
driver
etc Add libproc_macro from local rust to stage0 2016-10-19 00:12:42 -07:00
grammar
jemalloc@e058ca6616
liballoc run rustfmt on various folders 2016-10-16 15:41:01 +05:30
liballoc_jemalloc Add Fuchsia support 2016-10-22 07:08:06 -07:00
liballoc_system Print out the error when HeapFree failures do occur 2016-10-25 10:00:16 -04:00
libarena Auto merge of #37270 - Mark-Simulacrum:smallvec-optimized-arenas, r=eddyb 2016-10-26 03:47:55 -07:00
libbacktrace
libcollections Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libcollectionstest Auto merge of #37212 - srinivasreddy:libcollectionstest, r=nrc 2016-10-27 22:02:31 -07:00
libcompiler_builtins Don't build any native compiler-builtin components for emscripten 2016-09-30 14:04:09 -07:00
libcore Rollup merge of #37523 - d-unseductable:deref_mut_lifetimes, r=bluss 2016-11-02 15:09:43 -04:00
libcoretest Merge branch 'master' of https://github.com/rust-lang/rust 2016-11-01 15:26:22 +01:00
libflate Use fast decompression in deflate_bytes. 2016-10-20 15:08:01 +11:00
libfmt_macros
libgetopts Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libgraphviz Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
liblibc@7d9b71f097 Support for aarch64 architecture on Fuchsia 2016-10-24 16:58:35 -07:00
liblog run rustfmt on liblog 2016-10-12 23:45:03 +05:30
libpanic_abort
libpanic_unwind run rustfmt on libpanic_unwind 2016-10-18 23:09:47 +05:30
libproc_macro Move CrateConfig from Crate to ParseSess. 2016-10-29 07:52:58 +00:00
libproc_macro_plugin Split up libproc_macro_plugin 2016-10-28 12:17:17 +13:00
libproc_macro_tokens Split up libproc_macro_plugin 2016-10-28 12:17:17 +13:00
librand Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
librustc Auto merge of #36306 - nagisa:mir-local-cleanup, r=eddyb 2016-11-03 22:58:55 -07:00
librustc_back Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
librustc_bitflags std: Stabilize and deprecate APIs for 1.13 2016-10-03 10:34:34 -07:00
librustc_borrowck Rollup merge of #37498 - sanxiyn:unused-type-alias, r=eddyb 2016-11-02 15:09:42 -04:00
librustc_const_eval Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
librustc_const_math Stabilise ? 2016-10-12 08:40:22 +13:00
librustc_data_structures Auto merge of #36306 - nagisa:mir-local-cleanup, r=eddyb 2016-11-03 22:58:55 -07:00
librustc_driver Auto merge of #36306 - nagisa:mir-local-cleanup, r=eddyb 2016-11-03 22:58:55 -07:00
librustc_errors run rustfmt on librustc_errors folder 2016-10-18 23:13:02 +05:30
librustc_incremental Rollup merge of #37513 - michaelwoerister:hash-panic-spans, r=nikomatsakis 2016-11-02 15:09:42 -04:00
librustc_lint Add missing space in mutable_transmutes lint 2016-10-31 19:41:22 +01:00
librustc_llvm run rustfmt on librustc_llvm folder 2016-10-22 18:37:35 +05:30
librustc_metadata Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
librustc_mir A way to remove otherwise unused locals from MIR 2016-11-03 06:17:01 +02:00
librustc_passes Auto merge of #37378 - petrochenkov:nopat, r=eddyb 2016-10-29 05:41:05 -07:00
librustc_platform_intrinsics
librustc_plugin Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
librustc_privacy Remove outdated fixme comment. 2016-10-28 19:35:30 -06:00
librustc_resolve Rollup merge of #37498 - sanxiyn:unused-type-alias, r=eddyb 2016-11-02 15:09:42 -04:00
librustc_save_analysis Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
librustc_trans Auto merge of #36306 - nagisa:mir-local-cleanup, r=eddyb 2016-11-03 22:58:55 -07:00
librustc_typeck Rollup merge of #37498 - sanxiyn:unused-type-alias, r=eddyb 2016-11-02 15:09:42 -04:00
librustc_unicode std: Correct stability attributes for some implementations 2016-10-01 23:58:14 +01:00
librustdoc Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libserialize Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libstd Rollup merge of #37498 - sanxiyn:unused-type-alias, r=eddyb 2016-11-02 15:09:42 -04:00
libsyntax Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libsyntax_ext Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libsyntax_pos Do not intern filemap to entry w/ mismatched length. Fix #37274 (I think). 2016-10-28 17:16:34 +02:00
libterm Stabilise ? 2016-10-12 08:40:22 +13:00
libtest Changed most vec! invocations to use square braces 2016-10-31 22:51:40 +00:00
libunwind Add Fuchsia support 2016-10-22 07:08:06 -07:00
llvm@c1d962263b LLVM: Update submodule to rust-llvm-2016-10-29 branch. 2016-10-29 18:56:20 +03:00
rt Address comments and add requested tests 2016-09-03 13:39:35 +03:00
rtstartup Rename static mut to upper case 2016-10-14 17:21:11 +03:00
rust-installer@4f99485080 Update rust-installer. Fixes #36451 2016-10-05 00:17:30 +00:00
rustc Use workspaces and switch to a single Cargo.lock. 2016-10-07 12:04:32 -07:00
rustllvm LLVM: Update submodule to rust-llvm-2016-10-29 branch. 2016-10-29 18:56:20 +03:00
test Auto merge of #37541 - nikomatsakis:issue-37291, r=brson 2016-11-02 22:58:01 -07:00
tools std: Flatten the num directory to reflect the module layout 2016-11-01 17:08:24 +00:00
Cargo.lock Add rustc_data_structures to rustc_driver dependencies. 2016-10-30 19:14:18 -04:00
Cargo.toml Use workspaces and switch to a single Cargo.lock. 2016-10-07 12:04:32 -07:00
stage0.txt Allow bootstrapping without a key. Fixes #36548 2016-10-19 01:23:01 +00:00