| # 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 |
| |
| # For some very small programs GNU ld seems to not properly handle |
| # instrumentation sections correctly. Neither Gold nor LLD have that problem. |
| ifeq ($(UNAME),Linux) |
| ifneq (,$(findstring x86,$(TARGET))) |
| COMMON_FLAGS=-Clink-args=-fuse-ld=gold |
| endif |
| endif |
| |
| |
| all: |
| # We don't compile `opaque` with either optimizations or instrumentation. |
| $(RUSTC) $(COMMON_FLAGS) opaque.rs || exit 1 |
| # Compile the test program with instrumentation |
| mkdir -p "$(TMPDIR)/prof_data_dir" || exit 1 |
| $(RUSTC) $(COMMON_FLAGS) interesting.rs \ |
| -Cprofile-generate="$(TMPDIR)/prof_data_dir" -O -Ccodegen-units=1 || exit 1 |
| $(RUSTC) $(COMMON_FLAGS) main.rs -Cprofile-generate="$(TMPDIR)/prof_data_dir" -O || exit 1 |
| # The argument below generates to the expected branch weights |
| $(call RUN,main aaaaaaaaaaaa2bbbbbbbbbbbb2bbbbbbbbbbbbbbbbcc) || exit 1 |
| "$(LLVM_BIN_DIR)/llvm-profdata" merge \ |
| -o "$(TMPDIR)/prof_data_dir/merged.profdata" \ |
| "$(TMPDIR)/prof_data_dir" || exit 1 |
| $(RUSTC) $(COMMON_FLAGS) interesting.rs \ |
| -Cprofile-use="$(TMPDIR)/prof_data_dir/merged.profdata" -O \ |
| -Ccodegen-units=1 --emit=llvm-ir || exit 1 |
| cat "$(TMPDIR)/interesting.ll" | "$(LLVM_FILECHECK)" filecheck-patterns.txt |
