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f41b4d44f9
Previously, YJIT assumed that basic blocks never consume more than
1 KiB of memory. This assumption does not hold for long Ruby methods
such as the one in the following:
```ruby
eval(<<RUBY)
def set_local_a_lot
#{'_=0;'*0x40000}
end
RUBY
set_local_a_lot
```
For low `--yjit-exec-mem-size` values, one basic block could exhaust the
entire buffer.
Introduce a new field `codeblock_t::dropped_bytes` that the assembler
sets whenever it runs out of space. Check this field in
gen_single_block() to respond to out of memory situations and other
error conditions. This design avoids making the control flow graph of
existing code generation functions more complex.
Use POSIX shell in misc/test_yjit_asm.sh since bash is expanding
`0%/*/*` differently.
Co-authored-by: Aaron Patterson <tenderlove@ruby-lang.org>
10 lines
182 B
Bash
Executable file
10 lines
182 B
Bash
Executable file
#!/bin/sh
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set -e
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set -x
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clang -std=gnu99 -Wall -Werror -Wno-error=unused-function -Wshorten-64-to-32 -I "${0%/*/*}" "${0%/*}/yjit_asm_tests.c" -o asm_test
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./asm_test
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rm asm_test
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