Continue to bailout on optional parameters and context-allocated local
variables.
Implement compilation of Bind and Do instructions, LoadLocal and StoreLocal
computations, and temporary values. Temporary allocation assumes they obey
a stack-discipline and have a single use---so any use is always the last
use. Temporaries can then be allocated via push and used via pop. This
dart function:
hukairs(a) {
var b, c;
c = b = a;
return c;
}
compiles to this annotated generated code snippet:
;; StoreLocal(b, #null)
66: mov $0x7f99303c0021,%rax
70: mov %rax,-0x8(%rbp)
;; StoreLocal(c, #null)
74: mov $0x7f99303c0021,%rax
7e: mov %rax,-0x10(%rbp)
;; t0 <-LoadLocal(a)
82: mov 0x10(%rbp),%ax
86: push %rax
;; t0 <-StoreLocal(b, t0)
87: pop %rax
88: mov %rax,-0x8(%rbp)
8c: push %rax
;; StoreLocal(c, t0)
8d: pop %rax
8e: mov %rax,-0x10(%rbp)
;; t0 <-LoadLocal(c)
92: mov -0x10(%rbp),%ax
96: push %rax
;; return t0
97: pop %rax
;; ...
bf: mov %rbp,%rsp
c2: pop %rbp
c3: retq
R=srdjan@google.com
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com//9447102
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@4666 260f80e4-7a28-3924-810f-c04153c831b5
kmillikin@google.com
013864dcec