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54 Commits

Author SHA1 Message Date
Dan Gohman 7bafa0eaef [WebAssembly] Add asserts that the expression stack is used in stack order. 
llvm-svn: 253638
 2015-11-20 02:33:24 +00:00
Dan Gohman b0992dafb3 [WebAssemby] Enforce FIFO ordering for instructions using stackified registers. 
llvm-svn: 253634
 2015-11-20 02:19:12 +00:00
Dan Gohman 4ba4816b97 [WebAssembly] Enable register coloring and register stackifying. 
This also takes the push/pop syntax another step forward, introducing stack
slot numbers to make it easier to see how expressions are connected. For
example, the value pushed in $push7 is popped in $pop7.

And, this begins an experiment with making get_local and set_local implicit
when an operation directly uses or defines a register. This greatly reduces
clutter. If this experiment succeeds, it may make sense to do this for
const instructions as well.

And, this introduces more special code for ARGUMENTS; hopefully this code
will soon be obviated by proper support for live-in virtual registers.

llvm-svn: 253465
 2015-11-18 16:12:01 +00:00
Dan Gohman 1462faad35 [WebAssembly] Prototype passes for register coloring and register stackifying. 
These passes are not yet enabled by default.

llvm-svn: 253217
 2015-11-16 16:18:28 +00:00