[all-commits] [llvm/llvm-project] a3d2d3: [Clang] Use poison as base for vector literals

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a3d2d34e844ac3b9186d9ebc7696b48e717ecb76
      https://github.com/llvm/llvm-project/commit/a3d2d34e844ac3b9186d9ebc7696b48e717ecb76
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M clang/lib/CodeGen/CGExprScalar.cpp
    M clang/test/CodeGen/PowerPC/ppc-emmintrin.c
    M clang/test/CodeGen/PowerPC/ppc-xmmintrin.c
    M clang/test/CodeGen/X86/avx-builtins.c
    M clang/test/CodeGen/X86/avx512bw-builtins.c
    M clang/test/CodeGen/X86/avx512cd-builtins.c
    M clang/test/CodeGen/X86/avx512f-builtins.c
    M clang/test/CodeGen/X86/avx512fp16-builtins.c
    M clang/test/CodeGen/X86/avx512vl-builtins.c
    M clang/test/CodeGen/X86/avx512vlbw-builtins.c
    M clang/test/CodeGen/X86/avx512vlcd-builtins.c
    M clang/test/CodeGen/X86/f16c-builtins-constrained.c
    M clang/test/CodeGen/X86/f16c-builtins.c
    M clang/test/CodeGen/X86/sse-builtins.c
    M clang/test/CodeGen/X86/sse2-builtins.c
    M clang/test/CodeGen/X86/sse3-builtins.c
    M clang/test/CodeGen/aarch64-bf16-dotprod-intrinsics.c
    M clang/test/CodeGen/aarch64-bf16-getset-intrinsics.c
    M clang/test/CodeGen/aarch64-neon-2velem.c
    M clang/test/CodeGen/aarch64-neon-fma.c
    M clang/test/CodeGen/aarch64-neon-fp16fml.c
    M clang/test/CodeGen/aarch64-poly64.c
    M clang/test/CodeGen/aarch64-v8.2a-neon-intrinsics-constrained.c
    M clang/test/CodeGen/aarch64-v8.2a-neon-intrinsics.c
    M clang/test/CodeGen/arm-bf16-dotprod-intrinsics.c
    M clang/test/CodeGen/arm-bf16-getset-intrinsics.c
    M clang/test/CodeGen/arm-neon-fma.c
    M clang/test/CodeGen/arm-v8.2a-neon-intrinsics.c
    M clang/test/CodeGen/arm64_vdupq_n_f64.c
    M clang/test/CodeGen/arm_neon_intrinsics.c
    M clang/test/CodeGenHLSL/builtins/ScalarSwizzles.hlsl
    M clang/test/CodeGenOpenCL/partial_initializer.cl
    M clang/test/CodeGenOpenCL/vector_literals.cl
    M clang/test/CodeGenOpenCL/vector_shufflevector.cl
    M clang/test/Headers/wasm.c

  Log Message:
  -----------
  [Clang] Use poison as base for vector literals

When constructing vectors from elements, use poison instead of
undef as the base value. These literals always initialize all
elements (padding the remainder with zero), so that the choice
of base value does not affect semantics.