Auto merge of #32571 - eddyb:llvm-back-to-back, r=alexcrichton

Weed out dependencies on librustc_llvm and librustc.

Found while working on #32570. cc @nikomatsakis

Author: bors

mk/crates.mk

@@ -53,11 +53,12 @@ TARGET_CRATES := libc std term \
                  getopts collections test rand \
                  core alloc \
                  rustc_unicode rustc_bitflags \
-		 alloc_system alloc_jemalloc rustc_const_eval
+		 alloc_system alloc_jemalloc
 RUSTC_CRATES := rustc rustc_typeck rustc_mir rustc_borrowck rustc_resolve rustc_driver \
                 rustc_trans rustc_back rustc_llvm rustc_privacy rustc_lint \
                 rustc_data_structures rustc_front rustc_platform_intrinsics \
-                rustc_plugin rustc_metadata rustc_passes rustc_save_analysis
+                rustc_plugin rustc_metadata rustc_passes rustc_save_analysis \
+                rustc_const_eval
 HOST_CRATES := syntax syntax_ext $(RUSTC_CRATES) rustdoc fmt_macros \
 		flate arena graphviz rbml log serialize
 TOOLS := compiletest rustdoc rustc rustbook error_index_generator
@@ -94,9 +95,9 @@ DEPS_syntax_ext := syntax fmt_macros
 DEPS_rustc_const_eval := std syntax
 
 DEPS_rustc := syntax fmt_macros flate arena serialize getopts rbml rustc_front\
-              log graphviz rustc_llvm rustc_back rustc_data_structures\
+              log graphviz rustc_back rustc_data_structures\
 		  	  rustc_const_eval
-DEPS_rustc_back := std syntax rustc_llvm rustc_front flate log libc
+DEPS_rustc_back := std syntax rustc_front flate log libc
 DEPS_rustc_borrowck := rustc rustc_front rustc_mir log graphviz syntax
 DEPS_rustc_data_structures := std log serialize
 DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
@@ -110,7 +111,7 @@ DEPS_rustc_metadata := rustc rustc_front syntax rbml rustc_const_eval
 DEPS_rustc_passes := syntax rustc core rustc_front
 DEPS_rustc_mir := rustc rustc_front syntax rustc_const_eval
 DEPS_rustc_resolve := arena rustc rustc_front log syntax
-DEPS_rustc_platform_intrinsics := rustc rustc_llvm
+DEPS_rustc_platform_intrinsics := std
 DEPS_rustc_plugin := rustc rustc_metadata syntax rustc_mir
 DEPS_rustc_privacy := rustc rustc_front log syntax
 DEPS_rustc_trans := arena flate getopts graphviz libc rustc rustc_back rustc_mir \

src/etc/platform-intrinsics/generator.py

@@ -759,12 +759,11 @@ def open(self, platform):
 
 use {{Intrinsic, Type}};
 use IntrinsicDef::Named;
-use rustc::middle::ty::TyCtxt;
 
 // The default inlining settings trigger a pathological behaviour in
 // LLVM, which causes makes compilation very slow. See #28273.
 #[inline(never)]
-pub fn find<'tcx>(_tcx: &TyCtxt<'tcx>, name: &str) -> Option<Intrinsic> {{
+pub fn find(name: &str) -> Option<Intrinsic> {{
     if !name.starts_with("{0}") {{ return None }}
     Some(match &name["{0}".len()..] {{'''.format(platform.intrinsic_prefix())
 

src/librustc/Cargo.toml

@@ -21,6 +21,5 @@ rustc_bitflags = { path = "../librustc_bitflags" }
 rustc_const_eval = { path = "../librustc_const_eval" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_front = { path = "../librustc_front" }
-rustc_llvm = { path = "../librustc_llvm" }
 serialize = { path = "../libserialize" }
 syntax = { path = "../libsyntax" }

src/librustc/lib.rs

@@ -50,7 +50,6 @@ extern crate getopts;
 extern crate graphviz;
 extern crate libc;
 extern crate rbml;
-pub extern crate rustc_llvm as llvm;
 extern crate rustc_back;
 extern crate rustc_front;
 extern crate rustc_data_structures;
@@ -140,10 +139,6 @@ pub mod util {
     pub mod fs;
 }
 
-pub mod lib {
-    pub use llvm;
-}
-
 // A private module so that macro-expanded idents like
 // `::rustc::lint::Lint` will also work in `rustc` itself.
 //

src/librustc/session/config.rs

@@ -38,8 +38,6 @@ use std::env;
 use std::fmt;
 use std::path::PathBuf;
 
-use llvm;
-
 pub struct Config {
     pub target: Target,
     pub int_type: IntTy,
@@ -1052,10 +1050,6 @@ pub fn build_session_options(matches: &getopts::Matches) -> Options {
     let dump_dep_graph = debugging_opts.dump_dep_graph;
     let no_analysis = debugging_opts.no_analysis;
 
-    if debugging_opts.debug_llvm {
-        unsafe { llvm::LLVMSetDebug(1); }
-    }
-
     let mut output_types = HashMap::new();
     if !debugging_opts.parse_only && !no_trans {
         for list in matches.opt_strs("emit") {

src/librustc_back/Cargo.toml

@@ -11,7 +11,6 @@ crate-type = ["dylib"]
 [dependencies]
 syntax = { path = "../libsyntax" }
 serialize = { path = "../libserialize" }
-rustc_llvm = { path = "../librustc_llvm" }
 rustc_front = { path = "../librustc_front" }
 log = { path = "../liblog" }
 

src/librustc_back/lib.rs

@@ -45,7 +45,6 @@
 extern crate syntax;
 extern crate libc;
 extern crate serialize;
-extern crate rustc_llvm;
 extern crate rustc_front;
 #[macro_use] extern crate log;
 

src/librustc_driver/lib.rs

@@ -166,6 +166,10 @@ pub fn run_compiler<'a>(args: &[String],
 
     let sopts = config::build_session_options(&matches);
 
+    if sopts.debugging_opts.debug_llvm {
+        unsafe { llvm::LLVMSetDebug(1); }
+    }
+
     let descriptions = diagnostics_registry();
 
     do_or_return!(callbacks.early_callback(&matches,

src/librustc_platform_intrinsics/Cargo.toml

@@ -7,7 +7,3 @@ version = "0.0.0"
 name = "rustc_platform_intrinsics"
 path = "lib.rs"
 crate-type = ["dylib"]
-
-[dependencies]
-rustc_llvm = { path = "../librustc_llvm" }
-rustc = { path = "../librustc" }

src/librustc_platform_intrinsics/aarch64.rs

@@ -15,12 +15,11 @@
 
 use {Intrinsic, Type};
 use IntrinsicDef::Named;
-use rustc::ty::TyCtxt;
 
 // The default inlining settings trigger a pathological behaviour in
 // LLVM, which causes makes compilation very slow. See #28273.
 #[inline(never)]
-pub fn find<'tcx>(_tcx: &TyCtxt<'tcx>, name: &str) -> Option<Intrinsic> {
+pub fn find(name: &str) -> Option<Intrinsic> {
     if !name.starts_with("aarch64_v") { return None }
     Some(match &name["aarch64_v".len()..] {
         "hadd_s8" => Intrinsic {