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28f03bbcbb
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
20 lines
1.2 KiB
C
20 lines
1.2 KiB
C
// RUN: %clang_cc1 -triple thumb-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKPOS %s
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// RUN: %clang_cc1 -triple thumb-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKNEG %s
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// RUN: %clang_cc1 -triple arm-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKPOS %s
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// RUN: %clang_cc1 -triple arm-apple-darwin -emit-llvm -o - %s | FileCheck --check-prefix CHECKNEG %s
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__attribute__((target("arm"))) void test_target_arm() {
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// CHECKPOS: define void @test_target_arm() [[ARM_ATTRS:#[0-9]+]]
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// CHECKNEG: define void @test_target_arm() [[ARM_ATTRS:#[0-9]+]]
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}
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__attribute__((target("thumb"))) void test_target_thumb() {
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// CHECKPOS: define void @test_target_thumb() [[THUMB_ATTRS:#[0-9]+]]
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// CHECKNEG: define void @test_target_thumb() [[THUMB_ATTRS:#[0-9]+]]
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}
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// CHECKPOS: attributes [[ARM_ATTRS]] = { {{.*}} "target-features"="{{.*}}-thumb-mode{{.*}}"
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// CHECKPOS: attributes [[THUMB_ATTRS]] = { {{.*}} "target-features"="{{.*}}+thumb-mode{{.*}}"
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// CHECKNEG-NOT: attributes [[ARM_ATTRS]] = { {{.*}} "target-features"="{{.*}}+thumb-mode{{.*}}"
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// CHECKNEG-NOT: attributes [[THUMB_ATTRS]] = { {{.*}} "target-features"="{{.*}}-thumb-mode{{.*}}"
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