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ac/nir_to_llvm: add frexp support 

Fixes CTS tests:
KHR-GL40.gpu_shader_fp64.builtin.frexp_double
KHR-GL40.gpu_shader_fp64.builtin.frexp_dvec2
KHR-GL40.gpu_shader_fp64.builtin.frexp_dvec3
KHR-GL40.gpu_shader_fp64.builtin.frexp_dvec4

And piglit test:
tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/fs-frexp-dvec4.shader_test

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Timothy Arceri 2018-03-20 13:07:22 +11:00
parent cca2141745
commit c135316555
1 changed files with 11 additions and 0 deletions
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11
src/amd/common/ac_nir_to_llvm.c
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@ -728,6 +728,17 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
result = ac_build_fdiv(&ctx->ac, instr->dest.dest.ssa.bit_size == 32 ? ctx->ac.f32_1 : ctx->ac.f64_1,
result);
break;
case nir_op_frexp_exp:
src[0] = ac_to_float(&ctx->ac, src[0]);
result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.frexp.exp.i32.f64",
ctx->ac.i32, src, 1, AC_FUNC_ATTR_READNONE);
break;
case nir_op_frexp_sig:
src[0] = ac_to_float(&ctx->ac, src[0]);
result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.frexp.mant.f64",
ctx->ac.f64, src, 1, AC_FUNC_ATTR_READNONE);
break;
case nir_op_fmax:
result = emit_intrin_2f_param(&ctx->ac, "llvm.maxnum",
ac_to_float_type(&ctx->ac, def_type), src[0], src[1]);