From fcca6a83cddfdd7b82b9a7e0412c060d0830e3c3 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Thu, 16 Mar 2017 21:18:10 -0700 Subject: [PATCH] spirv: Implement IsInf using an integer comparison Since we already do fabs on the one source, we're guaranteed to get positive infinity if we get any infinity at all. Since +inf only has one IEEE 754 representation, we can use an integer comparison and avoid all of the ordered/unordered issues. Cc: Dave Airlie Reviewed-by: Elie Tournier Reviewed-by: Dave Airlie --- src/compiler/spirv/vtn_alu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/compiler/spirv/vtn_alu.c b/src/compiler/spirv/vtn_alu.c index 0738fe0cf99..9e4beedf926 100644 --- a/src/compiler/spirv/vtn_alu.c +++ b/src/compiler/spirv/vtn_alu.c @@ -447,7 +447,7 @@ vtn_handle_alu(struct vtn_builder *b, SpvOp opcode, break; case SpvOpIsInf: - val->ssa->def = nir_feq(&b->nb, nir_fabs(&b->nb, src[0]), + val->ssa->def = nir_ieq(&b->nb, nir_fabs(&b->nb, src[0]), nir_imm_float(&b->nb, INFINITY)); break; -- 2.30.2