rust/flamegraph.sh
bjorn3 1e5c6bc5b8 Stop using xargo for building the sysroot
It is currently broken. (see https://github.com/japaric/xargo/issues/227)

This makes it easier to for example patch whole crates away.
2018-12-15 16:18:03 +01:00

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#!/bin/bash
source config.sh
# These files grow really big (~1.4G) because of the sample frequency
rm perf.data* || true
# Profile compiling libcore
perf record -F 9000 --call-graph dwarf \
-- $RUSTC --crate-type lib build_sysroot/sysroot_src/src/libcore/lib.rs --crate-name core
# Generate the flamegraph
perf script | ../FlameGraph/stackcollapse-perf.pl | grep cranelift | ../FlameGraph/flamegraph.pl > abc.svg