Eliminate xblock liveness with rep cmp/lod/scas #3542
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Signed-off-by: Alyssa Rosenzweig <[email protected]>
1. pull flag calculation out of the loop body for perf 2. fully rotate the inner loop to save an instruction per iteration 3. hoist the rcx=0 jump to avoid computing df when rcx=0 Signed-off-by: Alyssa Rosenzweig <[email protected]>
Signed-off-by: Alyssa Rosenzweig <[email protected]>
Signed-off-by: Alyssa Rosenzweig <[email protected]>
eliminates xblock liveness Signed-off-by: Alyssa Rosenzweig <[email protected]>
eliminates xblock live Signed-off-by: Alyssa Rosenzweig <[email protected]>
Signed-off-by: Alyssa Rosenzweig <[email protected]>
Signed-off-by: Alyssa Rosenzweig <[email protected]>
20 tasks
Sonicadvance1
approved these changes
Apr 1, 2024
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Not the most clever thing we could do but it's hard to do better given the current state of the IR. Could move to splatter to optimize harder if we want, I guess.