cmd/internal/obj/arm64: optimize constant pool
"MOVD $0xaaaaaaaa, R2"
"MOVD $-0x55555555, R3"
For the above instructions, 64-bit constants 0x00000000
aaaaaaaa
and 0xffffffff
aaaaaaab are stored in the constant pool.
This CL optimizes them to
"MOVWU $0xaaaaaaaa, R2"
"MOVW $-0x05555555, R3"
and 32-bit constants 0xaaaaaaaa and 0xaaaaaaab are stored in the
constant pool.
There is a little size reduction (about total 5KB) in both the go
executable and the library files.
Change-Id: I7c4bfa6cd9c07da99c69a8f9c15010a0cce3b735
Reviewed-on: https://go-review.googlesource.com/105775
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>