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# needs-profiler-support
# ignore-windows-gnu
# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
# properly. Since we only have GCC on the CI ignore the test for now.
-include ../tools.mk
all:
# We don't compile `opaque` with either optimizations or instrumentation.
# We don't compile `opaque` with either optimizations or instrumentation.
$(RUSTC) $(COMMON_FLAGS) opaque.rs
# Compile the test program with instrumentation
mkdir -p "$(TMPDIR)"/prof_data_dir
$(RUSTC) $(COMMON_FLAGS) interesting.rs \
-Cprofile-generate="$(TMPDIR)"/prof_data_dir -O -Ccodegen-units=1
$(RUSTC) $(COMMON_FLAGS) main.rs -Cprofile-generate="$(TMPDIR)"/prof_data_dir -O
# The argument below generates to the expected branch weights
$(call RUN,main) || exit 1
"$(LLVM_BIN_DIR)"/llvm-profdata merge \
-o "$(TMPDIR)"/prof_data_dir/merged.profdata \
"$(TMPDIR)"/prof_data_dir
$(RUSTC) $(COMMON_FLAGS) interesting.rs \
-Cprofile-use="$(TMPDIR)"/prof_data_dir/merged.profdata -O \
-Ccodegen-units=1 --emit=llvm-ir
cat "$(TMPDIR)"/interesting.ll | "$(LLVM_FILECHECK)" filecheck-patterns.txt
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