tree 0e9e6a7f4bf1bdc7ac5eb1d5b86e86997dffba0f
parent 3544fca6571640631ceecd6fc4ff6ea6bd7b3a57
author Cherry Zhang <cherryyz@google.com> 1502743339 -0400
committer Cherry Zhang <cherryyz@google.com> 1502804465 +0000

gollvm: don't propagate lvalue-ness down on deref expression

For *expr = val, expr should be evaluated as an rvalue, even
the deref expression (*expr) is an lvalue. For example,

	var p float64 = ...
	*(*int32)(unsafe.Pointer(uintptr(p))) = 5

The expression being dereferenced should be evalueated as a
float64 load of p, a convertion to uint then to *int32,
instead of a pointer bitcast from *float64 to *uint then load.

Change-Id: Ife46a4f6181636e9561c7968891cfac67421743f
Reviewed-on: https://go-review.googlesource.com/55672
Reviewed-by: Than McIntosh <thanm@google.com>