llvm-project/clang/test/CodeGen/patchable-function-entry.c
Fangrui Song f17ae668a9 [Driver][CodeGen] Add -fpatchable-function-entry=N[,0]
In the backend, this feature is implemented with the function attribute
"patchable-function-entry". Both the attribute and XRay use
TargetOpcode::PATCHABLE_FUNCTION_ENTER, so the two features are
incompatible.

Reviewed By: ostannard, MaskRay

Differential Revision: https://reviews.llvm.org/D72222
2020-01-10 09:57:39 -08:00

27 lines
983 B
C

// RUN: %clang_cc1 -triple aarch64 -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -fpatchable-function-entry=1 -o - | FileCheck --check-prefixes=CHECK,OPT %s
// CHECK: define void @f0() #0
__attribute__((patchable_function_entry(0))) void f0() {}
// CHECK: define void @f00() #0
__attribute__((patchable_function_entry(0, 0))) void f00() {}
// CHECK: define void @f2() #1
__attribute__((patchable_function_entry(2))) void f2() {}
// CHECK: define void @f20() #1
__attribute__((patchable_function_entry(2, 0))) void f20() {}
// CHECK: define void @f20decl() #1
__attribute__((patchable_function_entry(2, 0))) void f20decl();
void f20decl() {}
// OPT: define void @f() #2
void f() {}
/// M in patchable_function_entry(N,M) is currently ignored.
// CHECK: attributes #0 = { {{.*}} "patchable-function-entry"="0"
// CHECK: attributes #1 = { {{.*}} "patchable-function-entry"="2"
// OPT: attributes #2 = { {{.*}} "patchable-function-entry"="1"