Mesa (master): ac: implement nir_op_ldexp

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: 08fa84bb9adf81aa13422501fef8f077b51ef682
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=08fa84bb9adf81aa13422501fef8f077b51ef682

Author: Timothy Arceri <tarceri at itsqueeze.com>
Date:   Tue Feb 27 19:37:59 2018 +1100

ac: implement nir_op_ldexp

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

---

 src/amd/common/ac_nir_to_llvm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index b01012833f..44d96d27d7 100644
--- 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;