From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Sat, 13 Aug 2016 19:45:35 +0000 (-0400)
Subject: nv50/ir: properly clear upper bits of a bitset fill
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0b5f40b881d149d6c960d4ff8f69b58596cf9660;p=mesa.git

nv50/ir: properly clear upper bits of a bitset fill

Found by inspection. In practice, val is always == 0, so this never got
triggered.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
---

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_util.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_util.cpp
index 682c5690624..1daf778e934 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_util.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_util.cpp
@@ -297,8 +297,8 @@ void BitSet::fill(uint32_t val)
    unsigned int i;
    for (i = 0; i < (size + 31) / 32; ++i)
       data[i] = val;
-   if (val)
-      data[i] &= ~(0xffffffff << (size % 32)); // BE ?
+   if (val && i)
+      data[i - 1] &= (1 << (size % 32)) - 1;
 }
 
 void BitSet::setOr(BitSet *pA, BitSet *pB)