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fuzzgen: Enable s390x and disable unimplemented ops (#5596)

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Also fix assertion failure when using "i128 uext" or "i128 sext"
arguments or return values, as discovered by the fuzzer.
This commit is contained in:
Ulrich Weigand
2023-01-19 19:08:32 +01:00
committed by GitHub
parent 56a981bdd8
commit a2e9a608c1
4 changed files with 44 additions and 5 deletions
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1
cranelift/codegen/src/isa/s390x/abi.rs
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@@ -275,7 +275,6 @@ impl ABIMachineSpec for S390xMachineDeps {
} else if call_conv.extends_wasmtime() {
panic!("i128 args/return values not supported in the Wasmtime ABI");
} else {
assert!(param.extension == ir::ArgumentExtension::None);
// We must pass this by implicit reference.
if args_or_rets == ArgsOrRets::Rets {
// For return values, just force them to memory.

6
cranelift/codegen/src/isa/s390x/inst.isle
View File

@@ -2975,9 +2975,9 @@
;; Helper to compute the type of an implicitly extended argument/return value.
(decl abi_ext_ty (ArgumentExtension Type) Type)
(rule (abi_ext_ty (ArgumentExtension.None) ty) ty)
(rule (abi_ext_ty (ArgumentExtension.Uext) _) $I64)
(rule (abi_ext_ty (ArgumentExtension.Sext) _) $I64)
(rule 0 (abi_ext_ty _ ty) ty)
(rule 1 (abi_ext_ty (ArgumentExtension.Uext) (gpr32_ty _)) $I64)
(rule 1 (abi_ext_ty (ArgumentExtension.Sext) (gpr32_ty _)) $I64)
;; Helpers for generating immediate values ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;