3 commits

Author	SHA1	Message	Date
Ian Romanick	f061524f07	glsl2: Use as_constant some places instead of constant_expression_value ... The places where constant_expression_value are still used in loop analysis are places where a new expression tree is created and constant folding won't have happened. This is used, for example, when we try to determine the maximal loop iteration count. Based on review comments by Eric. "...rely on constant folding to have done its job, instead of going all through the subtree again when it wasn't a constant."	2010-09-03 11:55:22 -07:00
Ian Romanick	3bcfafcf03	glsl2: Track the number of ir_loop_jump instructions that are in a loop	2010-09-03 11:55:22 -07:00
Ian Romanick	9434a0749f	glsl2: Add module to analyze variables used in loops ... This is the first step eventually leading to loop unrolling.	2010-09-03 11:55:21 -07:00