derek.holloway
7502bf64a4
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66 lines
3.8 KiB
C
66 lines
3.8 KiB
C
// RUN: %clang_cc1 -triple aarch64-linux-gnu -mbranch-target-enforce -emit-llvm %s -o - | FileCheck --check-prefixes=BTI,ELF %s
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// RUN: %clang_cc1 -triple arm64-apple-ios -mbranch-target-enforce -emit-llvm %s -o - | FileCheck --check-prefixes=BTI %s
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// RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm %s -o - | FileCheck --check-prefixes=NOBTI,ELF %s
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// RUN: %clang_cc1 -triple arm64-apple-ios -emit-llvm %s -o - | FileCheck --check-prefixes=NOBTI %s
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// RUN: %clang_cc1 -triple aarch64-linux-gnu -fvisibility=hidden -emit-llvm %s -o - | FileCheck --check-prefixes=HIDDEN,ELF %s
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// RUN: %clang_cc1 -triple arm64-apple-ios -fvisibility=hidden -emit-llvm %s -o - | FileCheck --check-prefixes=HIDDEN %s
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// Check that the resolver functions generated by Clang have the correct attributes.
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// In these test cases, branch-target-enforcement is used as an example of
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// target-specific attribute that has to be set on every function by default.
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// FIXME: `cpu_specific`/`cpu_dispatch` and `target` attributes cannot be
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// tested on AArch64.
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__attribute__((target_clones("crc", "default")))
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int global_target_clones(void) { return 0; }
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__attribute__((target_version("crc"))) int global_target_version(void) { return 0; }
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__attribute__((target_version("default"))) int global_target_version(void) { return 0; }
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__attribute__((target_clones("crc", "default")))
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static int static_target_clones(void) { return 0; }
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__attribute__((target_version("crc"))) static int static_target_version(void) { return 0; }
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__attribute__((target_version("default"))) static int static_target_version(void) { return 0; }
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// Force emission of static_* functions.
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void *get_ptr1(void) { return static_target_clones; }
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void *get_ptr2(void) { return static_target_version; }
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#ifdef __ELF__
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// Make sure target-specific attributes can be overriden as needed for
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// non-autogenerated resolver functions.
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// Note that since there is only a single definition of ifunc_resolver, it
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// is not itself a multi-versioned function, even though it has target(...)
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// attribute.
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int ifunc_func(void) { return 0; }
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__attribute__((target("branch-protection=bti"))) void *ifunc_resolver(void) { return ifunc_func; }
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__attribute__((ifunc("ifunc_resolver"))) int ifunc(void);
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#endif
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// ELF: define{{.*}} ptr @ifunc_resolver() #[[ATTR_IFUNC_RESOLVER:[0-9]+]]
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// BTI: define weak_odr ptr @global_target_clones.resolver() #[[ATTR_RESOLVER:[0-9]+]]
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// BTI: define weak_odr ptr @global_target_version.resolver() #[[ATTR_RESOLVER]]
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// BTI: define internal ptr @static_target_clones.resolver() #[[ATTR_RESOLVER]]
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// BTI: define internal ptr @static_target_version.resolver() #[[ATTR_RESOLVER]]
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// In NOBTI case, only "no_sanitizer_instrumentation" attributes are added to the resolver
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// NOBTI: define weak_odr ptr @global_target_clones.resolver() [[ATTR_RESOLVER:(#[0-9]+)?]]{{( comdat)?}}
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// NOBTI: define weak_odr ptr @global_target_version.resolver() [[ATTR_RESOLVER]]{{( comdat)?}}
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// NOBTI: define internal ptr @static_target_clones.resolver() [[ATTR_RESOLVER]]
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// NOBTI: define internal ptr @static_target_version.resolver() [[ATTR_RESOLVER]]
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// HIDDEN: define weak_odr hidden ptr @global_target_clones.resolver() [[ATTR_RESOLVER:(#[0-9]+)?]]{{( comdat)?}}
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// HIDDEN: define weak_odr hidden ptr @global_target_version.resolver() [[ATTR_RESOLVER]]{{( comdat)?}}
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// HIDDEN: define internal ptr @static_target_clones.resolver() [[ATTR_RESOLVER]]
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// HIDDEN: define internal ptr @static_target_version.resolver() [[ATTR_RESOLVER]]
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// ELF: attributes #[[ATTR_IFUNC_RESOLVER]] = { {{.*}}"branch-target-enforcement"{{.*}} }
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// BTI: attributes #[[ATTR_RESOLVER]] = { {{.*}}"branch-target-enforcement"{{.*}} }
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//
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// NOBTI: attributes [[ATTR_RESOLVER]] = { disable_sanitizer_instrumentation }
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