clang/test/Driver/lto.c

   1 // -flto causes a switch to llvm-bc object files.
   2 // RUN: %clang -ccc-print-phases -c %s -flto 2> %t
   3 // RUN: FileCheck -check-prefix=CHECK-COMPILE-ACTIONS < %t %s
   4 //
   5 // CHECK-COMPILE-ACTIONS: 2: compiler, {1}, ir
   6 // CHECK-COMPILE-ACTIONS: 3: backend, {2}, lto-bc
   7
   8 // RUN: %clang -ccc-print-phases %s -flto 2> %t
   9 // RUN: FileCheck -check-prefix=CHECK-COMPILELINK-ACTIONS < %t %s
  10 //
  11 // CHECK-COMPILELINK-ACTIONS: 0: input, "{{.*}}lto.c", c
  12 // CHECK-COMPILELINK-ACTIONS: 1: preprocessor, {0}, cpp-output
  13 // CHECK-COMPILELINK-ACTIONS: 2: compiler, {1}, ir
  14 // CHECK-COMPILELINK-ACTIONS: 3: backend, {2}, lto-bc
  15 // CHECK-COMPILELINK-ACTIONS: 4: linker, {3}, image
  16
  17 // llvm-bc and llvm-ll outputs need to match regular suffixes
  18 // (unfortunately).
  19 // RUN: %clang %s -flto -save-temps -### 2> %t
  20 // RUN: FileCheck -check-prefix=CHECK-COMPILELINK-SUFFIXES < %t %s
  21 //
  22 // CHECK-COMPILELINK-SUFFIXES: "-o" "{{.*}}lto.i" "-x" "c" "{{.*}}lto.c"
  23 // CHECK-COMPILELINK-SUFFIXES: "-o" "{{.*}}lto.bc" {{.*}}"{{.*}}lto.i"
  24 // CHECK-COMPILELINK-SUFFIXES: "-o" "{{.*}}lto.o" {{.*}}"{{.*}}lto.bc"
  25 // CHECK-COMPILELINK-SUFFIXES: "{{.*}}a.{{(out|exe)}}" {{.*}}"{{.*}}lto.o"
  26
  27 // RUN: %clang %s -flto -S -### 2> %t
  28 // RUN: FileCheck -check-prefix=CHECK-COMPILE-SUFFIXES < %t %s
  29 //
  30 // CHECK-COMPILE-SUFFIXES: "-o" "{{.*}}lto.s" "-x" "c" "{{.*}}lto.c"
  31
  32 // RUN: not %clang %s -emit-llvm 2>&1 | FileCheck --check-prefix=LLVM-LINK %s
  33 // LLVM-LINK: -emit-llvm cannot be used when linking
  34
  35 /// With ld.bfd or gold, link against LLVMgold.
  36 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  37 // RUN:   -fuse-ld=bfd -flto=thin -### 2>&1 | FileCheck --check-prefix=LLVMGOLD %s
  38 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  39 // RUN:   -fuse-ld=gold -flto=full -### 2>&1 | FileCheck --check-prefix=LLVMGOLD %s
  40 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  41 // RUN:   -fuse-ld=gold -fno-lto -flto -### 2>&1 | FileCheck --check-prefix=LLVMGOLD %s
  42 // LLVMGOLD: "-plugin" "{{.*}}{{[/\\]}}LLVMgold.{{dll|dylib|so}}"
  43
  44 /// lld does not need LLVMgold.
  45 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  46 // RUN:   -fuse-ld=lld -flto -### 2>&1 | FileCheck --check-prefix=NO-LLVMGOLD %s
  47 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  48 // RUN:   -fuse-ld=gold -flto -fno-lto -### 2>&1 | FileCheck --check-prefix=NO-LLVMGOLD %s
  49 // NO-LLVMGOLD-NOT: "-plugin" "{{.*}}{{[/\\]}}LLVMgold.{{dll|dylib|so}}"
  50
  51 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  52 // RUN:   -fuse-ld=lld -flto -O -### 2>&1 | FileCheck --check-prefix=O1 %s
  53 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  54 // RUN:   -fuse-ld=lld -flto -O1 -### 2>&1 | FileCheck --check-prefix=O1 %s
  55 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  56 // RUN:   -fuse-ld=lld -flto -Og -### 2>&1 | FileCheck --check-prefix=O1 %s
  57 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  58 // RUN:   -fuse-ld=lld -flto -O2 -### 2>&1 | FileCheck --check-prefix=O2 %s
  59 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  60 // RUN:   -fuse-ld=lld -flto -Os -### 2>&1 | FileCheck --check-prefix=O2 %s
  61 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  62 // RUN:   -fuse-ld=lld -flto -Oz -### 2>&1 | FileCheck --check-prefix=O2 %s
  63 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  64 // RUN:   -fuse-ld=lld -flto -O3 -### 2>&1 | FileCheck --check-prefix=O3 %s
  65 // RUN: %clang -target x86_64-unknown-linux-gnu --sysroot %S/Inputs/basic_cross_linux_tree %s \
  66 // RUN:   -fuse-ld=lld -flto -Ofast -### 2>&1 | FileCheck --check-prefix=O3 %s
  67
  68 // O1: -plugin-opt=O1
  69 // O2: -plugin-opt=O2
  70 // O3: -plugin-opt=O3
  71
  72 // -flto passes along an explicit debugger tuning argument.
  73 // RUN: %clang -target x86_64-unknown-linux -### %s -flto -glldb 2> %t
  74 // RUN: FileCheck -check-prefix=CHECK-TUNING-LLDB < %t %s
  75 // RUN: %clang -target x86_64-unknown-linux -### %s -flto -g 2> %t
  76 // RUN: FileCheck -check-prefix=CHECK-NO-TUNING < %t %s
  77 //
  78 // CHECK-TUNING-LLDB:   "-plugin-opt=-debugger-tune=lldb"
  79 // CHECK-NO-TUNING-NOT: "-plugin-opt=-debugger-tune
  80 //
  81 // -flto=auto and -flto=jobserver pass along -flto=full
  82 // RUN: %clang -target x86_64-unknown-linux -### %s -flto=auto 2>&1 | FileCheck --check-prefix=FLTO-AUTO %s
  83 // RUN: %clang -target x86_64-unknown-linux -### %s -flto=jobserver 2>&1 | FileCheck --check-prefix=FLTO-JOBSERVER %s
  84 //
  85 // FLTO-AUTO: -flto=full
  86 // FLTO-JOBSERVER: -flto=full
  87 //
  88
  89 // Pass the last -flto argument.
  90 // RUN: %clang -target x86_64-unknown-linux -### %s -flto=thin -flto 2>&1 | \
  91 // RUN: FileCheck --check-prefix=FLTO-FULL %s
  92 // RUN: %clang -target x86_64-unknown-linux -### %s -flto=thin -flto=full \
  93 // RUN: 2>&1 | FileCheck --check-prefix=FLTO-FULL %s
  94 // RUN: %clang -target x86_64-unknown-linux -### %s -flto=full -flto=thin  \
  95 // RUN: 2>&1 | FileCheck --check-prefix=FLTO-THIN %s
  96 // RUN: %clang -target x86_64-unknown-linux -### %s -flto -flto=thin 2>&1 | \
  97 // RUN: FileCheck --check-prefix=FLTO-THIN %s
  98 //
  99 // FLTO-FULL-NOT: -flto=thin
 100 // FLTO-FULL: -flto=full
 101 // FLTO-FULL-NOT: -flto=thin
 102 //
 103 // FLTO-THIN-NOT: -flto=full
 104 // FLTO-THIN-NOT: "-flto"
 105 // FLTO-THIN: -flto=thin
 106 // FLTO-THIN-NOT: "-flto"
 107 // FLTO-THIN-NOT: -flto=full