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88 lines
2.8 KiB
Makefile
88 lines
2.8 KiB
Makefile
# needs-matching-clang
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# This test makes sure that cross-language inlining can be used in conjunction
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# with profile-guided optimization. The test only tests that the whole workflow
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# can be executed without anything crashing. It does not test whether PGO or
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# xLTO have any specific effect on the generated code.
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include ../tools.mk
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COMMON_FLAGS=-Copt-level=3 -Ccodegen-units=1
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# LLVM doesn't support instrumenting binaries that use SEH:
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# https://bugs.llvm.org/show_bug.cgi?id=41279
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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: cpp-executable rust-executable
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cpp-executable:
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$(RUSTC) -Clinker-plugin-lto=on \
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-Cprofile-generate="$(TMPDIR)"/cpp-profdata \
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-o "$(TMPDIR)"/librustlib-xlto.a \
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$(COMMON_FLAGS) \
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./rustlib.rs
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$(CLANG) -flto=thin \
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-fprofile-generate="$(TMPDIR)"/cpp-profdata \
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-fuse-ld=lld \
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-L "$(TMPDIR)" \
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-lrustlib-xlto \
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-o "$(TMPDIR)"/cmain \
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-O3 \
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./cmain.c
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$(TMPDIR)/cmain
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# Postprocess the profiling data so it can be used by the compiler
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"$(LLVM_BIN_DIR)"/llvm-profdata merge \
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-o "$(TMPDIR)"/cpp-profdata/merged.profdata \
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"$(TMPDIR)"/cpp-profdata/default_*.profraw
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$(RUSTC) -Clinker-plugin-lto=on \
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-Cprofile-use="$(TMPDIR)"/cpp-profdata/merged.profdata \
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-o "$(TMPDIR)"/librustlib-xlto.a \
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$(COMMON_FLAGS) \
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./rustlib.rs
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$(CLANG) -flto=thin \
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-fprofile-use="$(TMPDIR)"/cpp-profdata/merged.profdata \
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-fuse-ld=lld \
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-L "$(TMPDIR)" \
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-lrustlib-xlto \
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-o "$(TMPDIR)"/cmain \
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-O3 \
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./cmain.c
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rust-executable:
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exit
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$(CLANG) ./clib.c -fprofile-generate="$(TMPDIR)"/rs-profdata -flto=thin -c -o $(TMPDIR)/clib.o -O3
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(cd $(TMPDIR); $(AR) crus ./libxyz.a ./clib.o)
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$(RUSTC) -Clinker-plugin-lto=on \
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-Cprofile-generate="$(TMPDIR)"/rs-profdata \
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-L$(TMPDIR) \
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$(COMMON_FLAGS) \
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-Clinker=$(CLANG) \
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-Clink-arg=-fuse-ld=lld \
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-o $(TMPDIR)/rsmain \
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./main.rs
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$(TMPDIR)/rsmain
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# Postprocess the profiling data so it can be used by the compiler
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"$(LLVM_BIN_DIR)"/llvm-profdata merge \
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-o "$(TMPDIR)"/rs-profdata/merged.profdata \
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"$(TMPDIR)"/rs-profdata/default_*.profraw
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$(CLANG) ./clib.c \
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-fprofile-use="$(TMPDIR)"/rs-profdata/merged.profdata \
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-flto=thin \
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-c \
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-o $(TMPDIR)/clib.o \
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-O3
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rm "$(TMPDIR)"/libxyz.a
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(cd $(TMPDIR); $(AR) crus ./libxyz.a ./clib.o)
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$(RUSTC) -Clinker-plugin-lto=on \
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-Cprofile-use="$(TMPDIR)"/rs-profdata/merged.profdata \
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-L$(TMPDIR) \
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$(COMMON_FLAGS) \
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-Clinker=$(CLANG) \
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-Clink-arg=-fuse-ld=lld \
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-o $(TMPDIR)/rsmain \
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./main.rs
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