ac: implement nir_op_ldexp

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index b01012833fe2a0e7498470bfe8d3f6284222adc0..44d96d27d7f34b3f6ccf30587083091fe892bfc5 100644 (file)
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -1907,6 +1907,13 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
                result = emit_intrin_3f_param(&ctx->ac, "llvm.fmuladd",
                                              ac_to_float_type(&ctx->ac, def_type), src[0], src[1], src[2]);
                break;
+       case nir_op_ldexp:
+               src[0] = ac_to_float(&ctx->ac, src[0]);
+               if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])) == 32)
+                       result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.ldexp.f32", ctx->ac.f32, src, 2, AC_FUNC_ATTR_READNONE);
+               else
+                       result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.ldexp.f64", ctx->ac.f64, src, 2, AC_FUNC_ATTR_READNONE);
+               break;
        case nir_op_ibitfield_extract:
                result = emit_bitfield_extract(&ctx->ac, true, src);
                break;