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.
25 lines
645 B
Plaintext
25 lines
645 B
Plaintext
test cat
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isa riscv
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; regex: WS=[ \t]*
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function %foo(i32, i32) {
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ebb1(v0: i32, v1: i32):
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[-,-] v2 = iadd v0, v1
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[-] trap
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[R#1234, %x5, %x11] v6, v7 = iadd_cout v2, v0
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[Rshamt#beef, %x25] v8 = ishl_imm v6, 2
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v9 = iadd v8, v7
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[Iret#5] return v0, v8
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}
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; sameln: function %foo(i32, i32) native {
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; nextln: $ebb1($v0: i32, $v1: i32):
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; nextln: [-,-]$WS $v2 = iadd $v0, $v1
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; nextln: [-]$WS trap
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; nextln: [R#1234,%x5,%x11]$WS $v6, $v7 = iadd_cout $v2, $v0
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; nextln: [Rshamt#beef,%x25]$WS $v8 = ishl_imm $v6, 2
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; nextln: [-,-]$WS $v9 = iadd $v8, $v7
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; nextln: [Iret#05]$WS return $v0, $v8
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; nextln: }
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