move to the WIP Rust port of compiler-rt

Author: Jorge Aparicio

.gitmodules

@@ -14,3 +14,7 @@
 [submodule "src/liblibc"]
 	path = src/liblibc
 	url = https://github.com/rust-lang/libc.git
+[submodule "src/libcompiler_builtins"]
+	path = src/libcompiler_builtins
+	url = git://github.com/japaric/rustc-builtins.git
+	branch = upstream

mk/crates.mk

@@ -228,3 +228,4 @@ $(foreach crate,$(TOOLS),$(eval $(call RUST_TOOL,$(crate))))
 
 CRATEFILE_libc := $(SREL)src/liblibc/src/lib.rs
 RUSTFLAGS_libc := --cfg stdbuild
+CRATEFILE_compiler_builtins := $(SREL)src/libcompiler_builtins/src/lib.rs

mk/rt.mk

@@ -319,7 +319,6 @@ COMPRT_OBJS_$(1) += \
   arm/clzsi2.o \
   arm/comparesf2.o \
   arm/divmodsi4.o \
-  arm/divsi3.o \
   arm/modsi3.o \
   arm/switch16.o \
   arm/switch32.o \
@@ -400,13 +399,9 @@ endif
 
 $(foreach intrinsic,absvdi2.o \
   absvsi2.o \
-  adddf3.o \
-  addsf3.o \
   addvdi3.o \
   addvsi3.o \
   apple_versioning.o \
-  ashldi3.o \
-  ashrdi3.o \
   clear_cache.o \
   clzdi2.o \
   clzsi2.o \
@@ -417,12 +412,8 @@ $(foreach intrinsic,absvdi2.o \
   ctzsi2.o \
   divdc3.o \
   divdf3.o \
-  divdi3.o \
-  divmoddi4.o \
-  divmodsi4.o \
   divsc3.o \
   divsf3.o \
-  divsi3.o \
   divxc3.o \
   extendsfdf2.o \
   extendhfsf2.o \
@@ -449,14 +440,8 @@ $(foreach intrinsic,absvdi2.o \
   floatunsidf.o \
   floatunsisf.o \
   int_util.o \
-  lshrdi3.o \
-  moddi3.o \
-  modsi3.o \
   muldc3.o \
   muldf3.o \
-  muldi3.o \
-  mulodi4.o \
-  mulosi4.o \
   muloti4.o \
   mulsc3.o \
   mulsf3.o \
@@ -472,8 +457,6 @@ $(foreach intrinsic,absvdi2.o \
   paritysi2.o \
   popcountdi2.o \
   popcountsi2.o \
-  powidf2.o \
-  powisf2.o \
   powixf2.o \
   subdf3.o \
   subsf3.o \
@@ -482,13 +465,7 @@ $(foreach intrinsic,absvdi2.o \
   truncdfhf2.o \
   truncdfsf2.o \
   truncsfhf2.o \
-  ucmpdi2.o \
-  udivdi3.o \
-  udivmoddi4.o \
-  udivmodsi4.o \
-  udivsi3.o \
-  umoddi3.o \
-  umodsi3.o,
+  ucmpdi2.o,
   $(call ADD_INTRINSIC,$(1),$(intrinsic)))
 
 ifeq ($$(findstring ios,$(1)),)
@@ -585,12 +562,12 @@ endif
 
 COMPRT_OBJS_$(1) := $$(COMPRT_OBJS_$(1):%=$$(COMPRT_BUILD_DIR_$(1))/%)
 
-$$(COMPRT_BUILD_DIR_$(1))/%.o: $(S)src/compiler-rt/lib/builtins/%.c
+$$(COMPRT_BUILD_DIR_$(1))/%.o: $(S)src/libcompiler_builtins/compiler-rt/compiler-rt-cdylib/compiler-rt/lib/builtins/%.c
 	@mkdir -p $$(@D)
 	@$$(call E, compile: $$@)
 	$$(Q)$$(call CFG_COMPILE_C_$(1),$$@,$$<)
 
-$$(COMPRT_BUILD_DIR_$(1))/%.o: $(S)src/compiler-rt/lib/builtins/%.S \
+$$(COMPRT_BUILD_DIR_$(1))/%.o: $(S)src/libcompiler_builtins/compiler-rt/compiler-rt-cdylib/compiler-rt/lib/builtins/%.S \
 	    $$(LLVM_CONFIG_$$(CFG_BUILD))
 	@mkdir -p $$(@D)
 	@$$(call E, compile: $$@)

mk/tests.mk

@@ -22,8 +22,9 @@ $(eval $(call RUST_CRATE,coretest))
 DEPS_collectionstest :=
 $(eval $(call RUST_CRATE,collectionstest))
 
+# compiler_builtins is tested out of tree
 TEST_TARGET_CRATES = $(filter-out core rustc_unicode alloc_system libc \
-		     		  alloc_jemalloc panic_unwind \
+		     		  alloc_jemalloc panic_unwind compiler_builtins \
 				  panic_abort,$(TARGET_CRATES)) \
 			collectionstest coretest
 TEST_DOC_CRATES = $(DOC_CRATES) arena flate fmt_macros getopts graphviz \

src/Cargo.lock

@@ -578,8 +578,8 @@ impl Build {
                                   .args(&["clean", "-fdx"]));
                 },
                 State::NotInitialized => {
-                    self.run(git_submodule().arg("init").arg(submodule.path));
-                    self.run(git_submodule().arg("update").arg(submodule.path));
+                    self.run(git_submodule().arg("update").arg("--recursive").arg("--init")
+                             .arg(submodule.path));
                 },
                 State::OutOfSync => {
                     // drops submodule commits that weren't reported to the (outer) git repository

src/bootstrap/lib.rs

@@ -19,7 +19,7 @@ collections = { path = "../libcollections" }
 core = { path = "../libcore" }
 libc = { path = "../rustc/libc_shim" }
 rand = { path = "../librand" }
-compiler_builtins = { path = "../libcompiler_builtins" }
+compiler_builtins = { path = "../rustc/libcompiler_builtins_shim" }
 rustc_unicode = { path = "../librustc_unicode" }
 unwind = { path = "../libunwind" }
 

src/libcompiler_builtins

@@ -0,0 +1,25 @@
+# This is a shim Cargo.toml over the "real Cargo.toml" found in the compiler-builtins
+# repository itself. See ../libc_shim/Cargo.toml for details
+
+[package]
+name = "compiler_builtins"
+version = "0.0.0"
+authors = ["The Rust Project Developers"]
+build = "../../libcompiler_builtins/build.rs"
+
+[lib]
+name = "compiler_builtins"
+path = "../../libcompiler_builtins/src/lib.rs"
+test = false
+
+[build-dependencies]
+gcc = "0.3.27"
+rustc-cfg = "0.2.0"
+
+[dependencies]
+core = { path = "../../libcore" }
+
+[features]
+default = ["c", "rustbuild"]
+c = []
+rustbuild = []