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.
32 lines
599 B
Plaintext
32 lines
599 B
Plaintext
test licm
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function %simple_loop(i32) -> i32 {
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ebb1(v0: i32):
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v1 = iconst.i32 1
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v2 = iconst.i32 2
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v3 = iadd v1, v2
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brz v0, ebb2(v0)
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v4 = isub v0, v1
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jump ebb1(v4)
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ebb2(v5: i32):
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return v5
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}
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; sameln: function %simple_loop
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; nextln: ebb2(v6: i32):
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; nextln: v1 = iconst.i32 1
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; nextln: v2 = iconst.i32 2
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; nextln: v3 = iadd v1, v2
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; nextln: jump ebb0(v6)
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; nextln:
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; nextln: ebb0(v0: i32):
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; nextln: brz v0, ebb1(v0)
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; nextln: v4 = isub v0, v1
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; nextln: jump ebb0(v4)
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; nextln:
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; nextln: ebb1(v5: i32):
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; nextln: return v5
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; nextln: }
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