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authorJim Lawson2015-07-17 14:59:31 -0700
committerJim Lawson2015-07-24 15:50:54 -0700
commit4b3b3f9d21d99be7dbd1e2d0a5d38df2ad89880e (patch)
tree3ac14ba63de261d3ab28140673e792588af25d92 /src/main/scala/Log2.scala
parent6c42f2560557ede48d9da0b8b63a6dc7a5e56d18 (diff)
Restructure when() logic.
Diffstat (limited to 'src/main/scala/Log2.scala')
-rw-r--r--src/main/scala/Log2.scala35
1 files changed, 0 insertions, 35 deletions
diff --git a/src/main/scala/Log2.scala b/src/main/scala/Log2.scala
deleted file mode 100644
index fe1c1372..00000000
--- a/src/main/scala/Log2.scala
+++ /dev/null
@@ -1,35 +0,0 @@
-package Chisel
-
-// TODO: these operators should be backend nodes so their width can be
-// inferred, rather than using getWidth. also, C++ perf would improve.
-
-object Log2 {
- def apply(x: Bits, width: Int): UInt = {
- if (width < 2) UInt(0)
- else if (width == 2) x(1)
- else Mux(x(width-1), UInt(width-1), apply(x, width-1))
- }
-
- def apply(x: Bits): UInt = apply(x, x.getWidth)
-}
-
-object OHToUInt {
- def apply(in: Seq[Bool]): UInt = apply(Vec(in))
- def apply(in: Vec[Bool]): UInt = apply(in.toBits, in.size)
- def apply(in: Bits): UInt = apply(in, in.getWidth)
-
- def apply(in: Bits, width: Int): UInt = {
- if (width <= 2) Log2(in, width)
- else {
- val mid = 1 << (log2Up(width)-1)
- val hi = in(width-1, mid)
- val lo = in(mid-1, 0)
- Cat(hi.orR, apply(hi | lo, mid))
- }
- }
-}
-
-object PriorityEncoder {
- def apply(in: Iterable[Bool]): UInt = PriorityMux(in, (0 until in.size).map(UInt(_)))
- def apply(in: Bits): UInt = apply(in.toBools)
-}