clang/test/CodeGen/unified-lto-pipeline.c

   1 // RUN: %clang --target=x86_64-unknown-unknown-linux -Xclang -fdebug-pass-manager -flto=thin -funified-lto -O2 -c %s -o %t.0 2>%t.0.txt
   2 // RUN: %clang --target=x86_64-unknown-unknown-linux -Xclang -fdebug-pass-manager -flto=full -funified-lto -O2 -c %s -o %t.1 2>%t.1.txt
   3 // RUN: %clang --target=x86_64-unknown-unknown-linux -Xclang -fdebug-pass-manager -flto=thin -O2 -c %s -o %t.2 2>%t.2.txt
   4 // RUN: %clang --target=x86_64-unknown-unknown-linux -Xclang -fdebug-pass-manager -flto=full -O2 -c %s -o %t.3 2>%t.3.txt
   5 // RUN: FileCheck --input-file %t.0.txt %s --check-prefix=THIN
   6 // RUN: FileCheck --input-file %t.3.txt %s --check-prefix=FULL
   7 // THIN: ThinLTOBitcodeWriterPass
   8 // FULL-NOT: ThinLTOBitcodeWriterPass
   9 /// Check that thin/full unified bitcode matches.
  10 // RUN: cmp %t.0 %t.1
  11 /// Check that pass pipelines for thin, thin-unified, full-unified all match.
  12 // RUN: diff %t.0.txt %t.1.txt
  13 // RUN: diff %t.0.txt %t.2.txt
  14 /// Pass pipeline for full is different.
  15 // RUN: not diff %t.0.txt %t.3.txt
  16
  17 int foo() {
  18   return 2 + 2;
  19 }
  20
  21 int bar() {
  22   return foo() + 1;
  23 }