7f3b807597
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.
81 lines
1.9 KiB
Plaintext
81 lines
1.9 KiB
Plaintext
; Parser tests for call and return syntax.
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test cat
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function %mini() {
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ebb1:
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return
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}
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; sameln: function %mini() native {
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; nextln: ebb0:
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; nextln: return
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; nextln: }
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function %r1() -> i32, f32 spiderwasm {
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ebb1:
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v1 = iconst.i32 3
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v2 = f32const 0.0
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return v1, v2
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}
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; sameln: function %r1() -> i32, f32 spiderwasm {
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; nextln: ebb0:
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; nextln: $v1 = iconst.i32 3
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; nextln: $v2 = f32const 0.0
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; nextln: return $v1, $v2
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; nextln: }
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function %signatures() {
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sig10 = ()
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sig11 = (i32, f64) -> i32, b1 spiderwasm
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fn5 = sig11 %foo
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fn8 = function %bar(i32) -> b1
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}
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; sameln: function %signatures() native {
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; nextln: $sig10 = () native
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; nextln: $sig11 = (i32, f64) -> i32, b1 spiderwasm
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; nextln: sig2 = (i32) -> b1 native
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; nextln: $fn5 = $sig11 %foo
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; nextln: $fn8 = sig2 %bar
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; nextln: }
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function %direct() {
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fn0 = function %none()
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fn1 = function %one() -> i32
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fn2 = function %two() -> i32, f32
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ebb0:
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call fn0()
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v1 = call fn1()
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v2, v3 = call fn2()
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return
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}
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; check: call $fn0()
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; check: $v1 = call $fn1()
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; check: $v2, $v3 = call $fn2()
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; check: return
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function %indirect(i64) {
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sig0 = (i64)
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sig1 = () -> i32
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sig2 = () -> i32, f32
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ebb0(v0: i64):
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v1 = call_indirect sig1, v0()
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call_indirect sig0, v1(v0)
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v3, v4 = call_indirect sig2, v1()
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return
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}
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; check: $v1 = call_indirect $sig1, $v0()
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; check: call_indirect $sig0, $v1($v0)
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; check: $v3, $v4 = call_indirect $sig2, $v1()
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; check: return
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; Special purpose function arguments
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function %special1(i32 sret, i32 fp, i32 csr, i32 link) -> i32 link, i32 fp, i32 csr, i32 sret {
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ebb0(v1: i32, v2: i32, v3: i32, v4: i32):
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return v4, v2, v3, v1
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}
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; check: function %special1(i32 sret, i32 fp, i32 csr, i32 link) -> i32 link, i32 fp, i32 csr, i32 sret native {
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; check: ebb0($v1: i32, $v2: i32, $v3: i32, $v4: i32):
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; check: return $v4, $v2, $v3, $v1
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; check: }
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