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35 lines
1.4 KiB
Makefile
35 lines
1.4 KiB
Makefile
# needs-profiler-support
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# ignore-windows-gnu
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# FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
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# properly. Since we only have GCC on the CI ignore the test for now.
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include ../tools.mk
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# For some very small programs GNU ld seems to not properly handle
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# instrumentation sections correctly. Neither Gold nor LLD have that problem.
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ifeq ($(UNAME),Linux)
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ifneq (,$(findstring x86,$(TARGET)))
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COMMON_FLAGS=-Clink-args=-fuse-ld=gold
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endif
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endif
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all:
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# We don't compile `opaque` with either optimizations or instrumentation.
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$(RUSTC) $(COMMON_FLAGS) opaque.rs || exit 1
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# Compile the test program with instrumentation
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mkdir -p "$(TMPDIR)/prof_data_dir" || exit 1
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$(RUSTC) $(COMMON_FLAGS) interesting.rs \
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-Cprofile-generate="$(TMPDIR)/prof_data_dir" -O -Ccodegen-units=1 || exit 1
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$(RUSTC) $(COMMON_FLAGS) main.rs -Cprofile-generate="$(TMPDIR)/prof_data_dir" -O || exit 1
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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" || exit 1
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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 || exit 1
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cat "$(TMPDIR)/interesting.ll" | "$(LLVM_FILECHECK)" filecheck-patterns.txt
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