Cherry Zhang 6ae3b70ef2 cmd/compile: add clobberdeadreg mode
When -clobberdeadreg flag is set, the compiler inserts code that
clobbers integer registers at call sites. This may be helpful for
debugging register ABI.

Only implemented on AMD64 for now.

Change-Id: Ia203d3f891c30fd95d0103489056fe01d63a2899
Reviewed-on: https://go-review.googlesource.com/c/go/+/302809
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2021-03-19 23:21:21 +00:00
2021-03-19 23:21:21 +00:00
2021-03-19 23:21:21 +00:00
2019-09-26 15:34:57 +00:00

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