30df912565
For a full explanation, see interp/README.md. In short, this rewrite is
a redesign of the partial evaluator which improves it over the previous
partial evaluator. The main functional difference is that when
interpreting a function, the interpretation can be rolled back when an
unsupported instruction is encountered (for example, an actual unknown
instruction or a branch on a value that's only known at runtime). This
also means that it is no longer necessary to scan functions to see
whether they can be interpreted: instead, this package now just tries to
interpret it and reverts when it can't go further.
This new design has several benefits:
* Most errors coming from the interp package are avoided, as it can
simply skip the code it can't handle. This has long been an issue.
* The memory model has been improved, which means some packages now
pass all tests that previously didn't pass them.
* Because of a better design, it is in fact a bit faster than the
previous version.
This means the following packages now pass tests with `tinygo test`:
* hash/adler32: previously it would hang in an infinite loop
* math/cmplx: previously it resulted in errors
This also means that the math/big package can be imported. It would
previously fail with a "interp: branch on a non-constant" error.
23 строки
662 Б
LLVM
23 строки
662 Б
LLVM
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64--linux"
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@"main$alloc.1" = internal unnamed_addr constant [6 x i8] c"\05\00{\00\00\04"
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declare void @runtime.printuint8(i8) local_unnamed_addr
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declare void @runtime.printint16(i16) local_unnamed_addr
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define void @runtime.initAll() unnamed_addr {
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entry:
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ret void
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}
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define void @main() unnamed_addr {
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entry:
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call void @runtime.printuint8(i8 3)
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call void @runtime.printuint8(i8 3)
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call void @runtime.printint16(i16 5)
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%int16SliceDst.val = load i16, i16* bitcast ([6 x i8]* @"main$alloc.1" to i16*)
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call void @runtime.printint16(i16 %int16SliceDst.val)
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ret void
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}
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