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Add a calling convention to all function signatures.

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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 bf1820587c
commit 7f3b807597
27 changed files with 211 additions and 144 deletions
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12
filetests/parser/branch.cton
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@@ -9,7 +9,7 @@ ebb0:
ebb1:
jump ebb0()
}
; sameln: function %minimal() {
; sameln: function %minimal() native {
; nextln: ebb0:
; nextln: jump ebb1
; nextln:
@@ -25,7 +25,7 @@ ebb0(v90: i32):
ebb1(v91: i32):
jump ebb0(v91)
}
; sameln: function %onearg(i32) {
; sameln: function %onearg(i32) native {
; nextln: ebb0($v90: i32):
; nextln: jump ebb1($v90)
; nextln:
@@ -41,7 +41,7 @@ ebb0(v90: i32, v91: f32):
ebb1(v92: i32, v93: f32):
jump ebb0(v92, v93)
}
; sameln: function %twoargs(i32, f32) {
; sameln: function %twoargs(i32, f32) native {
; nextln: ebb0($v90: i32, $v91: f32):
; nextln: jump ebb1($v90, $v91)
; nextln:
@@ -57,7 +57,7 @@ ebb0(v90: i32):
ebb1:
brnz v90, ebb1()
}
; sameln: function %minimal(i32) {
; sameln: function %minimal(i32) native {
; nextln: ebb0($v90: i32):
; nextln: brz $v90, ebb1
; nextln:
@@ -72,7 +72,7 @@ ebb0(v90: i32, v91: f32):
ebb1(v92: i32, v93: f32):
brnz v90, ebb0(v92, v93)
}
; sameln: function %twoargs(i32, f32) {
; sameln: function %twoargs(i32, f32) native {
; nextln: ebb0($v90: i32, $v91: f32):
; nextln: brz $v90, ebb1($v90, $v91)
; nextln:
@@ -94,7 +94,7 @@ ebb30:
ebb40:
trap
}
; sameln: function %jumptable(i32) {
; sameln: function %jumptable(i32) native {
; nextln: jt0 = jump_table 0
; nextln: jt1 = jump_table 0, 0, ebb0, ebb3, ebb1, ebb2
; nextln: