languages/go
languages/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-09-15 22:20:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

runtime: remove unused cpu architecture feature variables from binaries

Browse source 
On amd64 this reduces go binary sizes by 176 bytes due to not referencing
internal/cpu.ARM64 and internal/cpu.ARM.

Change-Id: I8e4f31e2b1939b05eec2148b44d7cff7e0aeb30e
Reviewed-on: https://go-review.googlesource.com/c/go/+/344329
Trust: Martin Möhrmann <martin@golang.org>
Run-TryBot: Martin Möhrmann <martin@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Martin Möhrmann 2020-10-24 05:54:46 +02:00
parent 457418b475
commit c1a14781ec
1 changed files with 10 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
src/runtime/proc.go
View file

@ -622,13 +622,18 @@ func cpuinit() {
// Support cpu feature variables are used in code generated by the compiler
// to guard execution of instructions that can not be assumed to be always supported.
x86HasPOPCNT = cpu.X86.HasPOPCNT
x86HasSSE41 = cpu.X86.HasSSE41
x86HasFMA = cpu.X86.HasFMA
switch GOARCH {
case "386", "AMD64":
x86HasPOPCNT = cpu.X86.HasPOPCNT
x86HasSSE41 = cpu.X86.HasSSE41
x86HasFMA = cpu.X86.HasFMA
armHasVFPv4 = cpu.ARM.HasVFPv4
case "arm":
armHasVFPv4 = cpu.ARM.HasVFPv4
arm64HasATOMICS = cpu.ARM64.HasATOMICS
case "arm64":
arm64HasATOMICS = cpu.ARM64.HasATOMICS
}
}
// The bootstrap sequence is: