From: Roy Spliet <rspliet@eclipso.eu>
Date: Fri, 6 Feb 2015 21:46:55 +0000 (+0100)
Subject: nv50/ir: Add emit support for MAD IMM format
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3dc39d0bca0f06454cb5cddf7571facb7671767a;p=mesa.git

nv50/ir: Add emit support for MAD IMM format

But don't enable generation of it in the opProperties, because we can't
guarantee the SDST==SRC2 constraint until after register assignment. We'll
add a post-RA folding pass to utilise this.

Signed-off-by: Roy Spliet <rspliet@eclipso.eu>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
---

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
index 23e4babfed0..b1e740954f5 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
@@ -939,6 +939,14 @@ CodeEmitterNV50::emitFMAD(const Instruction *i)
 
    code[0] = 0xe0000000;
 
+   if (i->src(1).getFile() == FILE_IMMEDIATE) {
+      code[1] = 0;
+      emitForm_IMM(i);
+      code[0] |= neg_mul << 15;
+      code[0] |= neg_add << 22;
+      if (i->saturate)
+         code[0] |= 1 << 8;
+   } else
    if (i->encSize == 4) {
       emitForm_MUL(i);
       code[0] |= neg_mul << 15;