c-rhodes added inline comments.
================
Comment at: clang/test/Sema/attr-arm-sve-vector-bits.c:278-283
-// Test implicit conversion between SVE and GNU vector is invalid when
-// __ARM_FEATURE_SVE_BITS != N
-#if defined(__ARM_FEATURE_SVE_BITS) && __ARM_FEATURE_SVE_BITS == 512
-typedef int32_t int4 __attribute__((vector_size(16)));
-svint32_t badcast(int4 x) { return x; } // expected-error {{returning 'int4'
(vector of 4 'int32_t' values) from a function with incompatible result type
'svint32_t' (aka '__SVInt32_t')}}
-#endif
----------------
I don't think this can be removed. The ACLE states "Whenever
__ARM_FEATURE_SVE_BITS==N, GNUT implicitly converts to VLAT and VLAT implicitly
converts to GNUT.".
AFAIK lax vector conversions only apply to vectors of the same width, with GNU
vectors for example the following is invalid regardless of lax vector
conversions:
```typedef int8_t int8x16_t __attribute__((vector_size(16)));
typedef int8_t int8x64_t __attribute__((vector_size(64)));
int8x16_t foo(int8x64_t x) { return x; }```
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D91696/new/
https://reviews.llvm.org/D91696
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