36 lines
1.5 KiB
Makefile
36 lines
1.5 KiB
Makefile
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# needs-profiler-support
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-include ../tools.mk
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# This test makes sure that instrumented binaries record the right counts for
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# functions being called and branches being taken. We run an instrumented binary
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# with an argument that causes a know path through the program and then check
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# that the expected counts get added to the use-phase LLVM IR.
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# LLVM doesn't support instrumenting binaries that use SEH:
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# https://github.com/rust-lang/rust/issues/61002
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#
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# Things work fine with -Cpanic=abort though.
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ifdef IS_MSVC
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COMMON_FLAGS=-Cpanic=abort
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endif
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all:
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# We don't compile `opaque` with either optimizations or instrumentation.
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# We don't compile `opaque` with either optimizations or instrumentation.
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$(RUSTC) $(COMMON_FLAGS) opaque.rs
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# Compile the test program with instrumentation
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mkdir -p "$(TMPDIR)"/prof_data_dir
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$(RUSTC) $(COMMON_FLAGS) interesting.rs \
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-Cprofile-generate="$(TMPDIR)"/prof_data_dir -O -Ccodegen-units=1
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$(RUSTC) $(COMMON_FLAGS) main.rs -Cprofile-generate="$(TMPDIR)"/prof_data_dir -O
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# The argument below generates to the expected branch weights
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$(call RUN,main aaaaaaaaaaaa2bbbbbbbbbbbb2bbbbbbbbbbbbbbbbcc) || exit 1
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"$(LLVM_BIN_DIR)"/llvm-profdata merge \
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-o "$(TMPDIR)"/prof_data_dir/merged.profdata \
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"$(TMPDIR)"/prof_data_dir
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$(RUSTC) $(COMMON_FLAGS) interesting.rs \
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-Cprofile-use="$(TMPDIR)"/prof_data_dir/merged.profdata -O \
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-Ccodegen-units=1 --emit=llvm-ir
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cat "$(TMPDIR)"/interesting.ll | "$(LLVM_FILECHECK)" filecheck-patterns.txt
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