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3 commits

Author SHA1 Message Date
Ian Romanick
77dd4f3536 Reimplement has_call_callback using ir_hierarchical_vistor 
This has the added advantage that it will stop traversing the tree as
soon as the first call is found.

The output of all test cases was verified to be the same using diff.
 2010-05-17 12:03:13 -07:00
Eric Anholt
8e75de3164 ir_copy_propagation: Return true if we optimized out any assignments. 
This may trigger other optimization phases to make more progress themselves.
 2010-05-05 09:32:44 -07:00
Eric Anholt
5c89f0ecb9 ir_copy_propagation: New pass to rewrite dereferences to avoid copies. 
This is pretty basic.  Right now it only handles pure assignments --
same type on each side, no swizzling, and only within basic blocks.
 2010-05-04 17:00:42 -07:00