From: Karol Herbst <karolherbst@gmail.com>
Date: Fri, 23 Jun 2017 18:30:27 +0000 (+0200)
Subject: nv50/ir: add precise field to Instruction
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1d7c232fbdab3bda71f93669be2e11449aa63f8f;p=mesa.git

nv50/ir: add precise field to Instruction

v4: initialize field with NULL

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Reviewed-by: Pierre Moreau <pierre.morrow@free.fr>
---

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
index 21641a4746c..08181b790f4 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
@@ -575,6 +575,7 @@ void Instruction::init()
    encSize = 0;
    ipa = 0;
    mask = 0;
+   precise = 0;
 
    lanes = 0xf;
 
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir.h b/src/gallium/drivers/nouveau/codegen/nv50_ir.h
index 5c09fed05c1..bc15992df0e 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir.h
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir.h
@@ -884,6 +884,8 @@ public:
    unsigned perPatch   : 1;
    unsigned exit       : 1; // terminate program after insn
    unsigned mask       : 4; // for vector ops
+   // prevent algebraic optimisations that aren't bit-for-bit identical
+   unsigned precise    : 1;
 
    int8_t postFactor; // MUL/DIV(if < 0) by 1 << postFactor