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llvm-project/clang/test/CodeGen/arm-target-attr.c

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[ARM] Add support for target("arm") and target("thumb"). Summary: This patch adds support for the target("arm") and target("thumb") attributes, which can be used to force the compiler to generated ARM or Thumb code for a function. In LLVM, ARM or Thumb code generation can be controlled by the thumb-mode target feature. But GCC already uses target("arm") and target("thumb"), so we have to substitute "arm" with -thumb-mode and "thumb" with +thumb-mode. Reviewers: echristo, pcc, kristof.beyls Reviewed By: echristo Subscribers: ahatanak, aemerson, javed.absar, kristof.beyls, cfe-commits Differential Revision: https://reviews.llvm.org/D33721 llvm-svn: 304781
2017-06-06 17:26:15 +08:00
// RUN: %clang_cc1 -triple thumb-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKPOS %s
// RUN: %clang_cc1 -triple thumb-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKNEG %s
// RUN: %clang_cc1 -triple arm-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKPOS %s
// RUN: %clang_cc1 -triple arm-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKNEG %s
__attribute__((target("arm"))) void test_target_arm() {
// CHECKPOS: define void @test_target_arm() [[ARM_ATTRS:#[0-9]+]]
// CHECKNEG: define void @test_target_arm() [[ARM_ATTRS:#[0-9]+]]
}
__attribute__((target("thumb"))) void test_target_thumb() {
// CHECKPOS: define void @test_target_thumb() [[THUMB_ATTRS:#[0-9]+]]
// CHECKNEG: define void @test_target_thumb() [[THUMB_ATTRS:#[0-9]+]]
}
// CHECKPOS: attributes [[ARM_ATTRS]] = { {{.*}} "target-features"="{{.*}}-thumb-mode{{.*}}"
// CHECKPOS: attributes [[THUMB_ATTRS]] = { {{.*}} "target-features"="{{.*}}+thumb-mode{{.*}}"
// CHECKNEG-NOT: attributes [[ARM_ATTRS]] = { {{.*}} "target-features"="{{.*}}+thumb-mode{{.*}}"
// CHECKNEG-NOT: attributes [[THUMB_ATTRS]] = { {{.*}} "target-features"="{{.*}}-thumb-mode{{.*}}"