[Mesa-dev] [PATCH 5/6] ac: add 8-bit and 64-bit support to ac_build_bitfield_reverse()

[Bas Nieuwenhuizen]

Patches 1-5 are r-b me.

On Mon, Apr 1, 2019 at 4:15 PM Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  src/amd/common/ac_llvm_build.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
> index 8d749cc8eb0..54e90288bda 100644
> --- a/src/amd/common/ac_llvm_build.c
> +++ b/src/amd/common/ac_llvm_build.c
> @@ -2585,6 +2585,13 @@ LLVMValueRef ac_build_bitfield_reverse(struct ac_llvm_context *ctx,
>         bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0));
>
>         switch (bitsize) {
> +       case 64:
> +               result = ac_build_intrinsic(ctx, "llvm.bitreverse.i64", ctx->i64,
> +                                           (LLVMValueRef []) { src0 }, 1,
> +                                           AC_FUNC_ATTR_READNONE);
> +
> +               result = LLVMBuildTrunc(ctx->builder, result, ctx->i32, "");
> +               break;
>         case 32:
>                 result = ac_build_intrinsic(ctx, "llvm.bitreverse.i32", ctx->i32,
>                                             (LLVMValueRef []) { src0 }, 1,
> @@ -2595,6 +2602,13 @@ LLVMValueRef ac_build_bitfield_reverse(struct ac_llvm_context *ctx,
>                                             (LLVMValueRef []) { src0 }, 1,
>                                             AC_FUNC_ATTR_READNONE);
>
> +               result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
> +               break;
> +       case 8:
> +               result = ac_build_intrinsic(ctx, "llvm.bitreverse.i8", ctx->i8,
> +                                           (LLVMValueRef []) { src0 }, 1,
> +                                           AC_FUNC_ATTR_READNONE);
> +
>                 result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
>                 break;
>         default:
> --
> 2.21.0
>
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