cmd/5g, cmd/5l, cmd/6g, cmd/6l, cmd/8g, cmd/8l, cmd/gc, runtime: generate…
cmd/5g, cmd/5l, cmd/6g, cmd/6l, cmd/8g, cmd/8l, cmd/gc, runtime: generate pointer maps by liveness analysis This change allows the garbage collector to examine stack slots that are determined as live and containing a pointer value by the garbage collector. This results in a mean reduction of 65% in the number of stack slots scanned during an invocation of "GOGC=1 all.bash". Unfortunately, this does not yet allow garbage collection to be precise for the stack slots computed as live. Pointers confound the determination of what definitions reach a given instruction. In general, this problem is not solvable without runtime cost but some advanced cooperation from the compiler might mitigate common cases. R=golang-dev, rsc, cshapiro CC=golang-dev https://golang.org/cl/14430048
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src/cmd/gc/array.c
0 → 100644
src/cmd/gc/plive.c
0 → 100644
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