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.
37 lines
1.2 KiB
Plaintext
37 lines
1.2 KiB
Plaintext
; Test the parser's support for encoding annotations.
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test legalizer
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isa riscv
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function %parse_encoding(i32 [%x5]) -> i32 [%x10] {
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; check: function %parse_encoding(i32 [%x5], i32 link [%x1]) -> i32 [%x10], i32 link [%x1] native {
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sig0 = (i32 [%x10]) -> i32 [%x10] native
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; check: sig0 = (i32 [%x10]) -> i32 [%x10] native
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sig1 = (i32 [%x10], i32 [%x11]) -> b1 [%x10] native
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; check: sig1 = (i32 [%x10], i32 [%x11]) -> b1 [%x10] native
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sig2 = (f32 [%f10], i32 [%x12], i32 [%x13]) -> f64 [%f10] native
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; check: sig2 = (f32 [%f10], i32 [%x12], i32 [%x13]) -> f64 [%f10] native
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; Arguments on stack where not necessary
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sig3 = (f64 [%f10], i32 [0], i32 [4]) -> f64 [%f10] native
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; check: sig3 = (f64 [%f10], i32 [0], i32 [4]) -> f64 [%f10] native
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; Stack argument before register argument
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sig4 = (f32 [72], i32 [%x10]) native
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; check: sig4 = (f32 [72], i32 [%x10]) native
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; Return value on stack
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sig5 = () -> f32 [0] native
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; check: sig5 = () -> f32 [0] native
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; function + signature
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fn15 = function %bar(i32 [%x10]) -> b1 [%x10] native
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; check: sig6 = (i32 [%x10]) -> b1 [%x10] native
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; nextln: fn0 = sig6 %bar
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ebb0(v0: i32):
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return v0
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}
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