tree 450e5b901b5b63f14be64547a57292b708f0472c
parent d0c73fcee18f89c6e5ac740154687412c09573d5
author Alastair Donaldson <alastair.donaldson@imperial.ac.uk> 1616841023 +0000
committer GitHub <noreply@github.com> 1616841023 +0000
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsBcBAABCAAQBQJgXwk/CRBK7hj4Ov3rIwAAdHIIAFydKmEXdQJRVDMSmlMhaZnp
 UU+m7RGblxno+DH3neRxRRuDSG4+uI/d6ku+FDRC22UrLRB62jIhty3Ukor+UG5J
 10N+TnzSghoHop3mtDkeiFpTCe5F0e9cFJJA5wE4nhZv5l59E9bYLlBbaSpRRBDO
 /S1YCnHgBvi3e8J3/NpkLLglgp8iHvOVkfx8L7vQFi+XVBFQuwaJjcmLa7+fN0Z4
 zedJKDW0gieauFApUb4195iE38VV9I1GEoVu9Yubs5CK4rd1bGb/dJsqS87S2t2i
 GroLMyhy5s+xfqn02NR3rSO8lj1HVEiG/4Qb8PvOmFtyqzQDfll7WXVO1yKxlT0=
 =vuQo
 -----END PGP SIGNATURE-----
 

spirv-fuzz: Do not add too many dead blocks (#4217)

Profiling has shown that adding large numbers of dead block
transformations can be expensive because each on requires dominator
analysis information, and each one invalidates this information. There
is currently no obvious mechanism for incrementally updating the
dominator analysis. This change restricts the number of these
transformations that a single fuzzer pass will apply, to restrict this
performance bottleneck.