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author | Alan Wu <XrXr@users.noreply.github.com> | 2023-03-29 17:57:52 -0400 |
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committer | GitHub <noreply@github.com> | 2023-03-29 17:57:52 -0400 |
commit | 1b064227671fe780044406f163b117ef85f2f8b9 (patch) | |
tree | e943381fd0bff79556c6541af9e456b7ca551842 /yjit/src/codegen.rs | |
parent | a1a4d77472475fc9ee4c16cce7b79f6f492c91c3 (diff) | |
download | ruby-1b064227671fe780044406f163b117ef85f2f8b9.tar.gz |
YJIT: Leave cfp->pc uninitialized for VM_FRAME_MAGIC_CFUNC
C function frames don't need to use the VM-specific pc field to run
properly. When pushing a control frame from output code, save one
instruction by leaving the field uninitialized.
Fix-up rb_vm_svar_lep(), which is used while setting local variables via
Regexp#=~. Use cfp->iseq as a secondary signal so it can stop assuming
that all CFUNC frames always have zero pc's.
Diffstat (limited to 'yjit/src/codegen.rs')
-rw-r--r-- | yjit/src/codegen.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/yjit/src/codegen.rs b/yjit/src/codegen.rs index 577031c86e..2ea64871b3 100644 --- a/yjit/src/codegen.rs +++ b/yjit/src/codegen.rs @@ -5095,7 +5095,11 @@ fn gen_send_cfunc( cme, recv, sp, - pc: Some(0), + pc: if cfg!(debug_assertions) { + Some(!0) // Poison value. Helps to fail fast. + } else { + None // Leave PC uninitialized as cfuncs shouldn't read it + }, iseq: None, local_size: 0, }); |