08e7a7f1a0
* cranelift: Add inline stack probe for x64 * cranelift: Cleanups comments Thanks @jameysharp!
38 lines
934 B
Plaintext
38 lines
934 B
Plaintext
test interpret
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test run
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set enable_probestack=true
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set probestack_strategy=inline
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; This is the default and is equivalent to a page size of 4096
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set probestack_size_log2=12
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target x86_64
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; Test also with 64k pages
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set probestack_size_log2=16
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target x86_64
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; Create a huge stack slot (1MB), way larger than PAGE_SIZE and touch the end of it.
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; This guarantees that we bypass the guard page, cause a page fault the OS isn't expecting
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; which turns into a segfault if we haven't correctly implemented stack probing.
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function %probe_loop(i64) -> i64 {
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ss0 = explicit_slot 1048576
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block0(v0: i64):
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stack_store.i64 v0, ss0
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v1 = stack_load.i64 ss0
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return v1
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}
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; run: %probe_loop(1) == 1
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; Tests the unrolled version of the stackprobe
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function %probe_unroll(i64) -> i64 {
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ss0 = explicit_slot 9000
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block0(v0: i64):
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stack_store.i64 v0, ss0
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v1 = stack_load.i64 ss0
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return v1
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}
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; run: %probe_unroll(1) == 1
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