T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add a calling convention to all function signatures.

Browse Source 
A CallConv enum on every function signature makes it possible to
generate calls to functions with different calling conventions within
the same ISA / within a single function.

The calling conventions also serve as a way of customizing Cretonne's
behavior when embedded inside a VM. As an example, the SpiderWASM
calling convention is used to compile WebAssembly functions that run
inside the SpiderMonkey virtual machine.

All function signatures must have a calling convention at the end, so
this changes the textual IL syntax.

Before:

    sig1 = signature(i32, f64) -> f64

After

    sig1 = (i32, f64) -> f64 native
    sig2 = (i32) spiderwasm

When printing functions, the signature goes after the return types:

    function %r1() -> i32, f32 spiderwasm {
    ebb1:
        ...
    }

In the parser, this calling convention is optional and defaults to
"native". This is mostly to avoid updating all the existing test cases
under filetests/. When printing a function, the calling convention is
always included, including for "native" functions.
This commit is contained in:
Jakob Stoklund Olesen
2017-08-02 16:40:35 -07:00
committed by Jakob Stoklund Olesen
parent 5fa991e325
commit c96d4daa20
27 changed files with 211 additions and 144 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
cranelift/tests/cfg_traversal.rs
View File

@@ -27,7 +27,7 @@ fn test_reverse_postorder_traversal(function_source: &str, ebb_order: Vec<u32>)
#[test]
fn simple_traversal() {
test_reverse_postorder_traversal("
function %test(i32) {
function %test(i32) native {
ebb0(v0: i32):
brz v0, ebb1
jump ebb2
@@ -56,7 +56,7 @@ fn simple_traversal() {
#[test]
fn loops_one() {
test_reverse_postorder_traversal("
function %test(i32) {
function %test(i32) native {
ebb0(v0: i32):
jump ebb1
ebb1:
@@ -74,7 +74,7 @@ fn loops_one() {
#[test]
fn loops_two() {
test_reverse_postorder_traversal("
function %test(i32) {
function %test(i32) native {
ebb0(v0: i32):
brz v0, ebb1
jump ebb2
@@ -99,7 +99,7 @@ fn loops_two() {
#[test]
fn loops_three() {
test_reverse_postorder_traversal("
function %test(i32) {
function %test(i32) native {
ebb0(v0: i32):
brz v0, ebb1
jump ebb2
@@ -129,7 +129,7 @@ fn loops_three() {
#[test]
fn back_edge_one() {
test_reverse_postorder_traversal("
function %test(i32) {
function %test(i32) native {
ebb0(v0: i32):
brz v0, ebb1
jump ebb2