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# needs-profiler-support
# ignore-windows-gnu
include ../tools.mk
# FIXME(eddyb) provide `HOST_RUSTC` and `TARGET_RUSTC`
# instead of hardcoding them everywhere they're needed.
ifeq ($(IS_MUSL_HOST),1)
ADDITIONAL_ARGS := $(RUSTFLAGS)
endif
all:
# Generate PGO profiles
$(BARE_RUSTC) $(ADDITIONAL_ARGS) -Cprofile-generate=$(TMPDIR)/profiles --out-dir $(TMPDIR) main.rs
$(TMPDIR)/main
# Merge profiles
"$(LLVM_BIN_DIR)/llvm-profdata" merge \
-o "$(TMPDIR)/merged.profdata" \
"$(TMPDIR)/profiles" || exit 1
# Use the profile
$(RUSTC) -Cprofile-use=$(TMPDIR)/merged.profdata --emit dep-info main.rs
# Check that profile file is in depinfo
$(CGREP) "merged.profdata" < $(TMPDIR)/main.d
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