tests/run-make-fulldeps/cross-lang-lto-pgo-smoketest/Makefile

   1 # needs-matching-clang
   2
   3 # This test makes sure that cross-language inlining can be used in conjunction
   4 # with profile-guided optimization. The test only tests that the whole workflow
   5 # can be executed without anything crashing. It does not test whether PGO or
   6 # xLTO have any specific effect on the generated code.
   7
   8 include ../tools.mk
   9
  10 COMMON_FLAGS=-Copt-level=3 -Ccodegen-units=1
  11
  12 # LLVM doesn't support instrumenting binaries that use SEH:
  13 # https://bugs.llvm.org/show_bug.cgi?id=41279
  14 #
  15 # Things work fine with -Cpanic=abort though.
  16 ifdef IS_MSVC
  17 COMMON_FLAGS+= -Cpanic=abort
  18 endif
  19
  20 all: cpp-executable rust-executable
  21
  22 cpp-executable:
  23         $(RUSTC) -Clinker-plugin-lto=on \
  24                  -Cprofile-generate="$(TMPDIR)"/cpp-profdata \
  25                  -o "$(TMPDIR)"/librustlib-xlto.a \
  26                  $(COMMON_FLAGS) \
  27                  ./rustlib.rs
  28         $(CLANG) -flto=thin \
  29                  -fprofile-generate="$(TMPDIR)"/cpp-profdata \
  30                  -fuse-ld=lld \
  31                  -L "$(TMPDIR)" \
  32                  -lrustlib-xlto \
  33                  -o "$(TMPDIR)"/cmain \
  34                  -O3 \
  35                  ./cmain.c
  36         $(TMPDIR)/cmain
  37         # Postprocess the profiling data so it can be used by the compiler
  38         "$(LLVM_BIN_DIR)"/llvm-profdata merge \
  39                 -o "$(TMPDIR)"/cpp-profdata/merged.profdata \
  40                 "$(TMPDIR)"/cpp-profdata/default_*.profraw
  41         $(RUSTC) -Clinker-plugin-lto=on \
  42                  -Cprofile-use="$(TMPDIR)"/cpp-profdata/merged.profdata \
  43                  -o "$(TMPDIR)"/librustlib-xlto.a \
  44                  $(COMMON_FLAGS) \
  45                  ./rustlib.rs
  46         $(CLANG) -flto=thin \
  47                  -fprofile-use="$(TMPDIR)"/cpp-profdata/merged.profdata \
  48                  -fuse-ld=lld \
  49                  -L "$(TMPDIR)" \
  50                  -lrustlib-xlto \
  51                  -o "$(TMPDIR)"/cmain \
  52                  -O3 \
  53                  ./cmain.c
  54
  55 rust-executable:
  56         exit
  57         $(CLANG) ./clib.c -fprofile-generate="$(TMPDIR)"/rs-profdata -flto=thin -c -o $(TMPDIR)/clib.o -O3
  58         (cd $(TMPDIR); $(AR) crus ./libxyz.a ./clib.o)
  59         $(RUSTC) -Clinker-plugin-lto=on \
  60                  -Cprofile-generate="$(TMPDIR)"/rs-profdata \
  61                  -L$(TMPDIR) \
  62                  $(COMMON_FLAGS) \
  63                  -Clinker=$(CLANG) \
  64                  -Clink-arg=-fuse-ld=lld \
  65                  -o $(TMPDIR)/rsmain \
  66                  ./main.rs
  67         $(TMPDIR)/rsmain
  68         # Postprocess the profiling data so it can be used by the compiler
  69         "$(LLVM_BIN_DIR)"/llvm-profdata merge \
  70                 -o "$(TMPDIR)"/rs-profdata/merged.profdata \
  71                 "$(TMPDIR)"/rs-profdata/default_*.profraw
  72         $(CLANG) ./clib.c \
  73                  -fprofile-use="$(TMPDIR)"/rs-profdata/merged.profdata \
  74                  -flto=thin \
  75                  -c \
  76                  -o $(TMPDIR)/clib.o \
  77                  -O3
  78         rm "$(TMPDIR)"/libxyz.a
  79         (cd $(TMPDIR); $(AR) crus ./libxyz.a ./clib.o)
  80         $(RUSTC) -Clinker-plugin-lto=on \
  81                  -Cprofile-use="$(TMPDIR)"/rs-profdata/merged.profdata \
  82                  -L$(TMPDIR) \
  83                  $(COMMON_FLAGS) \
  84                  -Clinker=$(CLANG) \
  85                  -Clink-arg=-fuse-ld=lld \
  86                  -o $(TMPDIR)/rsmain \
  87                  ./main.rs