Single-pass native code generation for x86-64 using dynasm.

.circleci/config.yml

@@ -18,8 +18,10 @@ jobs:
       - run:
           name: Install lint deps
           command: |
+            git config --global --unset url."ssh://[email protected]".insteadOf || true
+            rustup toolchain install nightly
             rustup component add rustfmt
-            rustup component add clippy
+            rustup component add clippy --toolchain=nightly || cargo +nightly install --git https://github.com/rust-lang/rust-clippy/ --force clippy
       - run:
           name: Execute lints
           command: |
@@ -274,6 +276,9 @@ jobs:
       - run: |
           export LLVM_SYS_70_PREFIX="`pwd`/clang+llvm-7.0.0-x86_64-linux-gnu-ubuntu-16.04/"
           make test
+          make test-nightly
+          make test-emscripten
+          make test-emscripten-nightly
       - save_cache:
           paths:
             - /usr/local/cargo/registry

Cargo.toml

@@ -25,12 +25,11 @@ wasmer-clif-backend = { path = "lib/clif-backend" }
 wasmer-runtime = { path = "lib/runtime" }
 wasmer-runtime-core = { path = "lib/runtime-core" }
 wasmer-emscripten = { path = "lib/emscripten" }
-
-[target.'cfg(not(windows))'.dependencies]
 wasmer-llvm-backend = { path = "lib/llvm-backend", optional = true }
+wasmer-dynasm-backend = { path = "lib/dynasm-backend", optional = true }
 
 [workspace]
-members = ["lib/clif-backend", "lib/runtime", "lib/runtime-core", "lib/emscripten", "lib/spectests", "lib/win-exception-handler", "lib/runtime-c-api", "lib/llvm-backend"]
+members = ["lib/clif-backend", "lib/dynasm-backend", "lib/runtime", "lib/runtime-core", "lib/emscripten", "lib/spectests", "lib/win-exception-handler", "lib/runtime-c-api", "lib/llvm-backend"]
 
 [build-dependencies]
 wabt = "0.7.2"
@@ -42,3 +41,4 @@ default = ["fast-tests"]
 # This feature will allow cargo test to run much faster
 fast-tests = []
 llvm = ["wasmer-llvm-backend"]
+dynasm = ["wasmer-dynasm-backend"]

Makefile

@@ -28,23 +28,29 @@ integration-tests: release
 
 lint:
 	cargo fmt --all -- --check
-	cargo clippy --all
+	cargo +nightly clippy --all
 
 precommit: lint test
 
 test:
 	# We use one thread so the emscripten stdouts doesn't collide
-	cargo test --all --exclude wasmer-runtime-c-api --exclude wasmer-emscripten --exclude wasmer-spectests -- $(runargs)
+	cargo test --all --exclude wasmer-runtime-c-api --exclude wasmer-emscripten --exclude wasmer-spectests --exclude wasmer-dynasm-backend -- $(runargs)
 	# cargo test --all --exclude wasmer-emscripten -- --test-threads=1 $(runargs)
 	cargo test --manifest-path lib/spectests/Cargo.toml --features clif
 	cargo test --manifest-path lib/spectests/Cargo.toml --features llvm
 	cargo build -p wasmer-runtime-c-api
 	cargo test -p wasmer-runtime-c-api -- --nocapture
 
+test-nightly:
+	cargo test --manifest-path lib/spectests/Cargo.toml --features dynasm
+
 test-emscripten:
 	cargo test --manifest-path lib/emscripten/Cargo.toml --features clif -- --test-threads=1 $(runargs)
 	cargo test --manifest-path lib/emscripten/Cargo.toml --features llvm -- --test-threads=1 $(runargs)
 
+test-emscripten-nightly:
+	cargo test --manifest-path lib/emscripten/Cargo.toml --features dynasm -- --test-threads=1 $(runargs)
+
 release:
 	# If you are in OS-X, you will need mingw-w64 for cross compiling to windows
 	# brew install mingw-w64

examples/single_pass_tests/br_table.wat

@@ -0,0 +1,37 @@
+(module
+    (func $main (export "main")
+        (i32.eq (call $test (i32.const 0)) (i32.const 2))
+        (i32.eq (call $test (i32.const 1)) (i32.const 0))
+        (i32.eq (call $test (i32.const 2)) (i32.const 1))
+        (i32.eq (call $test (i32.const 3)) (i32.const 3))
+        (i32.eq (call $test (i32.const 4)) (i32.const 3))
+        (i32.and)
+        (i32.and)
+        (i32.and)
+        (i32.and)
+        (i32.const 1)
+        (i32.eq)
+        (br_if 0)
+        (unreachable)
+    )
+
+    (func $test (param $p i32) (result i32)
+        (block
+            (block
+                (block
+                    (block
+                        (block
+                            (get_local $p)
+                            (br_table 2 0 1 3)
+                        )
+                        (return (i32.const 0))
+                    )
+                    (return (i32.const 1))
+                )
+                (return (i32.const 2))
+            )
+            (return (i32.const 3))
+        )
+        (unreachable)
+    )
+)

examples/single_pass_tests/call.wat

@@ -0,0 +1,23 @@
+(module
+    (func $main (export "main")
+        (local $a i32)
+        (block
+            (set_local $a (i32.const 33))
+            (i32.const 11)
+            (call $foo (get_local $a))
+            (i32.add)
+            (i32.const 86)
+            (i32.eq)
+            (br_if 0)
+            (unreachable)
+        )
+    )
+
+    (func $foo (param $input i32) (result i32)
+        (local $a i32)
+        (set_local $a (i32.const 42))
+        (get_local $a)
+        (get_local $input)
+        (i32.add)
+    )
+)

examples/single_pass_tests/call_indirect.wat

@@ -0,0 +1,25 @@
+(module
+    (type $binop (func (param i32 i32) (result i32)))
+    (table 1 100 anyfunc)
+    (elem (i32.const 5) $sub)
+    (elem (i32.const 10) $add)
+
+    (func $main (export "main")
+        (if (i32.eq (call_indirect (type $binop) (i32.const 42) (i32.const 1) (i32.const 10)) (i32.const 43))
+            (then)
+            (else unreachable)
+        )
+        (if (i32.eq (call_indirect (type $binop) (i32.const 42) (i32.const 1) (i32.const 5)) (i32.const 41))
+            (then)
+            (else unreachable)
+        )
+    )
+
+    (func $add (param i32) (param i32) (result i32)
+        (i32.add (get_local 0) (get_local 1))
+    )
+
+    (func $sub (param i32) (param i32) (result i32)
+        (i32.sub (get_local 0) (get_local 1))
+    )
+)

examples/single_pass_tests/div.wat

@@ -0,0 +1,36 @@
+(module
+    (func $main (export "main")
+        (i32.const 1)
+        (if (i32.ne (i32.div_s (i32.const 2) (i32.const -1)) (i32.const -2))
+            (then unreachable)
+        )
+        (i32.const 2)
+        (if (i32.ne (i32.div_u (i32.const 2) (i32.const -1)) (i32.const 0))
+            (then unreachable)
+        )
+        (i32.const 3)
+        (if (i32.ne (i32.div_u (i32.const 10) (i32.const 5)) (i32.const 2))
+            (then unreachable)
+        )
+        (i32.const 4)
+        (if (i64.ne (i64.div_s (i64.const 300000000000) (i64.const -1)) (i64.const -300000000000))
+            (then unreachable)
+        )
+        (i32.const 5)
+        (if (i64.ne (i64.div_u (i64.const 300000000000) (i64.const -1)) (i64.const 0))
+            (then unreachable)
+        )
+        (i32.const 6)
+        (if (i64.ne (i64.div_u (i64.const 300000000000) (i64.const 2)) (i64.const 150000000000))
+            (then unreachable)
+        )
+        (i32.add)
+        (i32.add)
+        (i32.add)
+        (i32.add)
+        (i32.add)
+        (if (i32.ne (i32.const 21))
+            (then unreachable)
+        )
+    )
+)

examples/single_pass_tests/global.wat

@@ -0,0 +1,26 @@
+(module
+    (global $g1 (mut i32) (i32.const 0))
+    (global $g2 (mut i32) (i32.const 99))
+    (func $main (export "main")
+        (if (i32.eq (get_global $g1) (i32.const 0))
+            (then)
+            (else unreachable)
+        )
+        (if (i32.eq (get_global $g2) (i32.const 99))
+            (then)
+            (else unreachable)
+        )
+
+        (set_global $g1 (i32.add (get_global $g1) (i32.const 1)))
+        (set_global $g2 (i32.sub (get_global $g2) (i32.const 1)))
+
+        (if (i32.eq (get_global $g1) (i32.const 1))
+            (then)
+            (else unreachable)
+        )
+        (if (i32.eq (get_global $g2) (i32.const 98))
+            (then)
+            (else unreachable)
+        )
+    )
+)