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This is a simple, cheap infrastructure for analyzing the shape of a DAG. It recognizes uniform DAGs that take the shape of bottom-up subtrees, such as the included matrix multiplication example. This is useful for heuristics that balance register pressure with ILP. Two canonical expressions of the heuristic are implemented in scheduling modes: -misched-ilpmin and -misched-ilpmax. llvm-svn: 168773 |
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CPP | ||
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Hexagon | ||
MBlaze | ||
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MSP430 | ||
NVPTX | ||
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Thumb | ||
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X86 | ||
XCore |