4df5662907
This patch adds a per-global code model attribute, which can override the target's code model to access global variables. Currently, the code model attribute is only supported on LoongArch. This patch also maps GCC's code model names to LLVM's, which allows for better compatibility between the two compilers. Suggested-by: Arthur Eubanks <aeubanks@google.com> Link: https://discourse.llvm.org/t/how-to-best-implement-code-model-overriding-for-certain-values/71816 Link: https://discourse.llvm.org/t/rfc-add-per-global-code-model-attribute/74944 --------- Signed-off-by: WANG Rui <wangrui@loongson.cn>
65 lines
5.7 KiB
C++
65 lines
5.7 KiB
C++
// RUN: %clang_cc1 -triple aarch64 -verify=expected,aarch64 -fsyntax-only %s
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// RUN: %clang_cc1 -triple loongarch64 -verify=expected,loongarch64 -fsyntax-only %s
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// RUN: %clang_cc1 -triple mips64 -verify=expected,mips64 -fsyntax-only %s
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// RUN: %clang_cc1 -triple powerpc64 -verify=expected,powerpc64 -fsyntax-only %s
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// RUN: %clang_cc1 -triple riscv64 -verify=expected,riscv64 -fsyntax-only %s
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// RUN: %clang_cc1 -triple x86_64 -verify=expected,x86_64 -fsyntax-only %s
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#if defined(__loongarch__) && !__has_attribute(model)
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#error "Should support model attribute"
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#endif
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int a __attribute((model("tiny"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// loongarch64-error {{code model 'tiny' is not supported on this target}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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int b __attribute((model("small"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// loongarch64-error {{code model 'small' is not supported on this target}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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int c __attribute((model("normal"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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int d __attribute((model("kernel"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// loongarch64-error {{code model 'kernel' is not supported on this target}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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int e __attribute((model("medium"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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int f __attribute((model("large"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// loongarch64-error {{code model 'large' is not supported on this target}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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int g __attribute((model("extreme"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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void __attribute((model("extreme"))) h() {} // aarch64-warning {{unknown attribute 'model' ignored}} \
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// loongarch64-error {{'model' attribute only applies to non-TLS global variables}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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thread_local int i __attribute((model("extreme"))); // aarch64-warning {{unknown attribute 'model' ignored}} \
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// loongarch64-error {{'model' attribute only applies to non-TLS global variables}} \
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// mips64-warning {{unknown attribute 'model' ignored}} \
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// powerpc64-warning {{unknown attribute 'model' ignored}} \
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// riscv64-warning {{unknown attribute 'model' ignored}} \
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// x86_64-warning {{unknown attribute 'model' ignored}}
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