Mesa (master): nir: add frexp_exp and frexp_sig opcodes

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: cca214174549af3d608e252d8642c2e194c910ed
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cca214174549af3d608e252d8642c2e194c910ed

Author: Timothy Arceri <tarceri at itsqueeze.com>
Date:   Tue Mar 20 13:06:23 2018 +1100

nir: add frexp_exp and frexp_sig opcodes

Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>

---

 src/compiler/glsl/glsl_to_nir.cpp | 2 ++
 src/compiler/nir/nir_opcodes.py   | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index 80eb15f1ab..be8cc33e06 100644
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -1612,6 +1612,8 @@ nir_visitor::visit(ir_expression *ir)
    case ir_unop_ceil:  result = nir_fceil(&b, srcs[0]); break;
    case ir_unop_floor: result = nir_ffloor(&b, srcs[0]); break;
    case ir_unop_fract: result = nir_ffract(&b, srcs[0]); break;
+   case ir_unop_frexp_exp: result = nir_frexp_exp(&b, srcs[0]); break;
+   case ir_unop_frexp_sig: result = nir_frexp_sig(&b, srcs[0]); break;
    case ir_unop_round_even: result = nir_fround_even(&b, srcs[0]); break;
    case ir_unop_sin:   result = nir_fsin(&b, srcs[0]); break;
    case ir_unop_cos:   result = nir_fcos(&b, srcs[0]); break;
diff --git a/src/compiler/nir/nir_opcodes.py b/src/compiler/nir/nir_opcodes.py
index 65d1320062..04edffc6c0 100644
--- a/src/compiler/nir/nir_opcodes.py
+++ b/src/compiler/nir/nir_opcodes.py
@@ -214,6 +214,9 @@ unop("fquantize2f16", tfloat, "(fabs(src0) < ldexpf(1.0, -14)) ? copysignf(0.0f,
 unop("fsin", tfloat, "bit_size == 64 ? sin(src0) : sinf(src0)")
 unop("fcos", tfloat, "bit_size == 64 ? cos(src0) : cosf(src0)")
 
+# dfrexp
+unop_convert("frexp_exp", tint32, tfloat64, "frexp(src0, &dst);")
+unop_convert("frexp_sig", tfloat64, tfloat64, "int n; dst = frexp(src0, &n);")
 
 # Partial derivatives.