ZarkoCA marked 7 inline comments as done.
ZarkoCA added inline comments.

================
Comment at: clang/test/CodeGen/altivec.c:7
+ 
+// RUN: %clang -S -emit-llvm -maltivec -mabi=vec-extabi -target 
powerpc-unknown-aix %s -o - | FileCheck %s
+// RUN: not %clang -S -emit-llvm -mabi=vec-default -target powerpc-unknown-aix 
%s 2>&1  | FileCheck  %s --check-prefix=AIX-ATVER
----------------
Xiangling_L wrote:
> When user specify `-maltivec / -target-feature +altivec`  without using any 
> abi option,  the compiler will assume default altivec abi. In this situation, 
> since default abi hasn’t been implemented, we should emit an error. So can we 
> also add testcases for :
> 
> ```
> // RUN: not %clang -S -emit-llvm -maltivec -target powerpc-unknown-aix %s 
> 2>&1 | FileCheck %s --check-prefix=AIX-ERROR
> and
> // RUN: not %clang_cc1 -target-feature +altivec -triple powerpc-unknown-aix 
> -emit-llvm %s 2>&1 | FileCheck %s --check-prefix=AIX-ERROR
> ```
That's a good catch, the error was able to be generated previously but 
reworking the logic in Clang.cpp with the previous diff caused it to not be 
emitted.  I went back to the older logic which emits the error in cases like 
where `maltivec` is specified without `mabi=vec-extabi`.

As for the cc1 error, currently the not vector types error catch that before we 
emit the Altivec ABI error since at this time there isn't a good way to check 
for `target-feature +altivec` in cc1. 


================
Comment at: llvm/test/CodeGen/PowerPC/aix-vec-abi.ll:1
+; RUN: not --crash llc < %s -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr8 2>&1 | 
FileCheck %s --check-prefix=DFLTERROR
+; RUN: not --crash llc < %s -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr8 2>&1 | 
FileCheck %s --check-prefix=DFLTERROR
----------------
Xiangling_L wrote:
> May I ask why we use `pwr8` for this test?
Sorry for missing this earlier, I wanted to specify a CPU that has Altivec 
instructions enabled so that hasAltivec true without the user specifying it. 


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89684/new/

https://reviews.llvm.org/D89684

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