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Add unit-type support for Identifier expressions #526
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Adding the to_string for type kind will improve the debug message for type wrappers.
struct S; Turns into an ADT type which is a type of unit-struct.
IdentifierExpr's can reference types like a unit-struct, referencing other structs actually form a function item type which is not supported yet.
CohenArthur
approved these changes
Jun 25, 2021
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let s = S; | ||
// { dg-warning "unused name" "" { target *-*-* } .-1 } |
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nit: If you don't care about the warning you can also use let _s = S;
since that's working now
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good point will fix.
Rust supports unit struct initilization such as S{} this takes this tree and resolves it fully. This should really be all desugared via HIR but that is in progress in another PR.
bors r+ |
Build succeeded: |
CohenArthur
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Fixes: 3496ca4 ("RISC-V: Add runtime invariant support") riscv_promote_function_mode doesn't promote a SI to DI for libcalls case. It intends to do that however the code is broken (regression). The fix is what generic promote_mode () in explow.cc does. I really don't understand why the old code didn't work, but stepping thru the debugger shows old code didn't and fixed does. This showed up when testing Ajit's REE ABI extension series which probes the ABI (using a NULL tree type) and ends up hitting the libcall code path. gcc/ChangeLog: * config/riscv/riscv.cc (riscv_promote_function_mode): Fix mode returned for libcall case. Tested-by: Patrick O'Neill <patrick@rivosinc.com> # pre-commit-CI Rust-GCC#526 Signed-off-by: Vineet Gupta <vineetg@rivosinc.com>
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Unit type can be reference via an identifier expression. Other type references via an identifier expression are not supported yet.