9da29b687f
This CL adds generic SSA rules to propagate constants through raw bits conversions between floats and integers. This allows constants to propagate through some math functions. For example, math.Copysign(0, -1) is now constant folded to a load of -0.0. Requires a fix to the ARM assembler which loaded -0.0 as +0.0. Change-Id: I52649a4691077c7414f19d17bb599a6743c23ac2 Reviewed-on: https://go-review.googlesource.com/62250 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
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