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llvm-project/clang/test/Driver/fsplit-machine-functions.c

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[clang] Add a command line flag for the Machine Function Splitter. This patch adds a command line flag for the machine function splitter (added in rG94faadaca4e1). -fsplit-machine-functions Split machine functions using profile information (x86 ELF). On other targets an error is emitted. If profile information is not provided a warning is emitted notifying the user that profile information is required. Differential Revision: https://reviews.llvm.org/D87047
2020-09-03 02:00:46 +08:00
// RUN: %clang -### -target x86_64 -fprofile-use=default.profdata -fsplit-machine-functions %s -c 2>&1 | FileCheck -check-prefix=CHECK-OPT %s
// RUN: %clang -### -target x86_64 -fprofile-use=default.profdata -fsplit-machine-functions -fno-split-machine-functions %s -c 2>&1 | FileCheck -check-prefix=CHECK-NOOPT %s
// RUN: %clang -### -target x86_64 -fsplit-machine-functions %s 2>&1 | FileCheck -check-prefix=CHECK-WARN %s
// RUN: not %clang -c -target arm-unknown-linux -fsplit-machine-functions %s 2>&1 | FileCheck -check-prefix=CHECK-TRIPLE %s
// CHECK-OPT: "-fsplit-machine-functions"
// CHECK-NOOPT-NOT: "-fsplit-machine-functions"
// CHECK-WARN: warning: argument '-fsplit-machine-functions' requires profile-guided optimization information
// CHECK-TRIPLE: error: unsupported option '-fsplit-machine-functions' for target