67 lines
2.4 KiB
Rust
67 lines
2.4 KiB
Rust
//@ compile-flags: -Z patchable-function-entry=15
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#![feature(patchable_function_entry)]
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#![crate_type = "lib"]
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// This should have the default, as set by the compile flags
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#[no_mangle]
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pub fn fun0() {}
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// The attribute should override the compile flags
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#[no_mangle]
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#[patchable_function_entry(prefix_nops = 1, entry_nops = 2)]
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pub fn fun1() {}
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// If we override an attribute to 0 or unset, the attribute should go away
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#[no_mangle]
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#[patchable_function_entry(entry_nops = 0)]
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pub fn fun2() {}
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// The attribute should override the compile flags
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#[no_mangle]
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#[patchable_function_entry(prefix_nops = 20, entry_nops = 1)]
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pub fn fun3() {}
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// The attribute should override the compile flags
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#[no_mangle]
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#[patchable_function_entry(prefix_nops = 2, entry_nops = 19)]
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pub fn fun4() {}
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// The attribute should override patchable-function-entry to 3
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// and patchable-function-prefix to the default of 0, clearing it entirely
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#[no_mangle]
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#[patchable_function_entry(entry_nops = 3)]
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pub fn fun5() {}
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// The attribute should override patchable-function-prefix to 4
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// and patchable-function-entry to the default of 0, clearing it entirely
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#[no_mangle]
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#[patchable_function_entry(prefix_nops = 4)]
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pub fn fun6() {}
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// CHECK: @fun0() unnamed_addr #0
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// CHECK: @fun1() unnamed_addr #1
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// CHECK: @fun2() unnamed_addr #2
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// CHECK: @fun3() unnamed_addr #3
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// CHECK: @fun4() unnamed_addr #4
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// CHECK: @fun5() unnamed_addr #5
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// CHECK: @fun6() unnamed_addr #6
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// CHECK: attributes #0 = { {{.*}}"patchable-function-entry"="15" {{.*}} }
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// CHECK-NOT: attributes #0 = { {{.*}}patchable-function-prefix{{.*}} }
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// CHECK: attributes #1 = { {{.*}}"patchable-function-entry"="2"{{.*}}"patchable-function-prefix"="1" {{.*}} }
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// CHECK-NOT: attributes #2 = { {{.*}}patchable-function-entry{{.*}} }
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// CHECK-NOT: attributes #2 = { {{.*}}patchable-function-prefix{{.*}} }
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// CHECK: attributes #2 = { {{.*}} }
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// CHECK: attributes #3 = { {{.*}}"patchable-function-entry"="1"{{.*}}"patchable-function-prefix"="20" {{.*}} }
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// CHECK: attributes #4 = { {{.*}}"patchable-function-entry"="19"{{.*}}"patchable-function-prefix"="2" {{.*}} }
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// CHECK: attributes #5 = { {{.*}}"patchable-function-entry"="3"{{.*}} }
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// CHECK-NOT: attributes #5 = { {{.*}}patchable-function-prefix{{.*}} }
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// CHECK: attributes #6 = { {{.*}}"patchable-function-prefix"="4"{{.*}} }
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// CHECK-NOT: attributes #6 = { {{.*}}patchable-function-entry{{.*}} }
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