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

[mesa.git] / src / gallium / drivers / nouveau / codegen / nv50_ir_util.cpp

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_util.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_util.cpp
index 682c5690624b34e5de50487ea5cfb26b6417fada..1daf778e9346b60521d6aaa24146fa1075cb1d61 100644 (file)
--- 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)