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Quote: condition codes difficult to optimize; use values instead and generate condition codes at final assembly; uses peephole optimization
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Group:
conditional control
Topic:
code optimization by special case analysis
Topic:
code optimization by flow analysis
Quotation Skeleton
Final assembly must also deal with condition codes. … IL does not have condition codes. Rather, compare … conditional branches. … Final assembly performs two local fix ups … Whenever … its assigned register is not the condition register, … In addition, some compares with zero are eliminated … seen to make the compare redundant. Google-1 Google-2
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Group: conditional control (7 topics, 142 quotes)
Topic: code optimization by special case analysis (22 items)
Topic: code optimization by flow analysis (45 items)