[PATCH] D143287: [Clang][x86] Change x86 cast intrinsics to use __builtin_nondeterministic_value

[Simon Pilgrim via Phabricator via cfe-commits]

RKSimon added inline comments.


================
Comment at: clang/test/CodeGen/X86/avx-builtins.c:146
   // CHECK-LABEL: test_mm256_castpd128_pd256
-  // CHECK: shufflevector <2 x double> %{{.*}}, <2 x double> %{{.*}}, <4 x 
i32> <i32 0, i32 1, i32 undef, i32 undef>
+  // CHECK: shufflevector <2 x double> %{{.*}}, <2 x double> %{{.*}}, <4 x 
i32> <i32 0, i32 1, i32 2, i32 3>
   return _mm256_castpd128_pd256(A);
----------------
Would it be useful to add a check for a "freeze <2 x double> poison" (or 
similar) to each cast test?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143287/new/

https://reviews.llvm.org/D143287

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