[PATCH] D102582: [RISCV] Report an error when ABI mismatch with target-abi module flag.

[Jessica Clarke via Phabricator via cfe-commits]

jrtc27 added inline comments.


================
Comment at: llvm/test/CodeGen/RISCV/module-target-abi-tests.ll:5
+; RUN: cat %s > %t.emptyabi
+; RUN: echo '!0 = !{i32 1, !"target-abi", !""}' >> %t.emptyabi
+; RUN: llc -mtriple=riscv32 < %t.emptyabi -o /dev/null
----------------
khchen wrote:
> khchen wrote:
> > luismarques wrote:
> > > Is this something that we are handling in general, having such flag without a value?
> > Good cached, in general the target-abi is not empty, I updated the current implementation, thanks!
> @luismarques 
> 
> Sorry, I forget that the empty target-abi are coming from some clang cc1 tests. 
> They are missing -target-abi option in clang cc1 so target-abi module flag is empty.
>  
> ```
> CodeGen/RISCV/riscv-atomics.c
> CodeGen/RISCV/riscv-inline-asm-rvv.c
> CodeGen/RISCV/riscv-inline-asm-xsfvfhbfmin.c
> CodeGen/RISCV/riscv-inline-asm.c
> ```
> 
> Maybe we need to calculate the default target-abi if it's empty? or handle empty target-abi in the backend?
> 
I do think we should be filling in the default ABI here, otherwise it's very fragile.


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  https://reviews.llvm.org/D102582/new/

https://reviews.llvm.org/D102582