commit 4570c34fc76c16c149d6040883b92c30abe70531
author Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Tue Apr 14 16:13:53 2020 -0400
committer Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Fri Apr 17 16:25:35 2020 -0400
tree 7714ab00686330df7e71ab9a5114e39f595f2552
parent d3643cdd81bf2f1ad6ddf10d80e38d0ddaf9f908

pan/bi: Add _MSCALE flag for FMA/ADD

So we can bias by exponents.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4615>

src/panfrost/bifrost/bi_print.c

diff --git a/src/panfrost/bifrost/bi_print.c b/src/panfrost/bifrost/bi_print.c
index 5dc5947..d6440a5 100644
--- a/src/panfrost/bifrost/bi_print.c
+++ b/src/panfrost/bifrost/bi_print.c
@@ -366,6 +366,9 @@
         else
                 fprintf(fp, "%s", bi_class_name(ins->type));
 
+        if ((ins->type == BI_ADD || ins->type == BI_FMA) && ins->op.mscale)
+                fprintf(fp, ".mscale");
+
         if (ins->type == BI_MINMAX)
                 fprintf(fp, "%s", bi_minmax_mode_name(ins->minmax));
         else if (ins->type == BI_LOAD_VAR)

src/panfrost/bifrost/compiler.h

diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index c1350f4..2d3f1a1 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -275,6 +275,9 @@
                 enum bi_table_op table;
                 enum bi_frexp_op frexp;
                 enum bi_cond compare;
+
+                /* For FMA/ADD, should we add a biased exponent? */
+                bool mscale;
         } op;
 
         /* Union for class-specific information */