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Increased TInstr field sizes: allow long jumps and 65535 VM registers (…
…#12777) * Increased regBx size from 16 to 24 bits to increase jump range in the VM from 32K to 8M instructions. Fixes #12727 * Increased VM TInst register field sizes to 16 bits to allow up to 65535 VM registers per proc * Added test case for >255 VM registers
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Original file line number | Diff line number | Diff line change |
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# Test a VM relative jump with an offset larger then 32767 instructions. | ||
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import macros | ||
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static: | ||
var a = 0 | ||
macro foo(): untyped = | ||
let s = newStmtList() | ||
for i in 1..6554: | ||
s.add nnkCommand.newTree(ident("inc"), ident("a")) | ||
quote do: | ||
if true: | ||
`s` | ||
foo() |
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Original file line number | Diff line number | Diff line change |
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import macros | ||
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# Generate a proc with more then 255 registers. Should not generate an error at | ||
# compile time | ||
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static: | ||
macro mkFoo() = | ||
let ss = newStmtList() | ||
for i in 1..256: | ||
ss.add parseStmt "var x" & $i & " = " & $i | ||
ss.add parseStmt "inc x" & $i | ||
quote do: | ||
proc foo() = | ||
`ss` | ||
mkFoo() | ||
foo() |