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TheRock/compiler/amd-llvm/clang/test/CIR/CodeGen/no-proto-then-def.c
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29 lines
1.2 KiB
C

// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir -Wno-deprecated-non-prototype %s -o %t.cir
// RUN: FileCheck --input-file=%t.cir %s -check-prefix=CIR
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm -Wno-deprecated-non-prototype %s -o %t-cir.ll
// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=LLVM
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -Wno-deprecated-non-prototype %s -o %t.ll
// RUN: FileCheck --input-file=%t.ll %s -check-prefix=LLVM
extern int default_proc();
int test_proc_ptr(int (*proc)()) {
if (!proc)
proc = default_proc;
return 0;
}
int default_proc(int a) { return a; }
// Address of a no-proto decl is taken before the real definition is emitted; the
// final FuncOp must be bitcast back to the no-proto function pointer type for
// stores and other uses that were typed from the earlier declaration.
// CIR: cir.func{{.*}}@test_proc_ptr
// CIR: cir.get_global @default_proc : !cir.ptr<!cir.func<(!s32i) -> !s32i>>
// CIR: cir.cast bitcast %{{.*}} : !cir.ptr<!cir.func<(!s32i) -> !s32i>> -> !cir.ptr<!cir.func<(...) -> !s32i>>
// LLVM: define{{.*}} @test_proc_ptr
// LLVM: store ptr @default_proc, ptr
// LLVM: define{{.*}} @default_proc
// LLVM: ret i32