1 files changed, 47 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_range_analysis.h b/src/compiler/nir/nir_range_analysis.h
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+++ b/src/compiler/nir/nir_range_analysis.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright © 2018 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#ifndef _NIR_RANGE_ANALYSIS_H_
+#define _NIR_RANGE_ANALYSIS_H_
+
+enum PACKED ssa_ranges {
+   unknown = 0,
+   lt_zero,
+   le_zero,
+   gt_zero,
+   ge_zero,
+   ne_zero,
+   eq_zero,
+   last_range = eq_zero
+};
+
+struct ssa_result_range {
+   enum ssa_ranges range;
+
+   /** A floating-point value that can only have integer values. */
+   bool is_integral;
+};
+
+extern struct ssa_result_range
+nir_analyze_range(const nir_alu_instr *instr, unsigned src);
+
+#endif /* _NIR_RANGE_ANALYSIS_H_ */