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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
// RUN: FileCheck --input-file=%t.cir %s -check-prefix=CIR
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fclangir -emit-llvm %s -o %t-cir.ll
// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=LLVM
unsigned char cxxstaticcast_0(unsigned int x) {
return static_cast<unsigned char>(x);
}
// CIR: cir.func{{.*}} @_Z15cxxstaticcast_0j
// CIR: %[[XPTR:[0-9]+]] = cir.alloca !u32i, !cir.ptr<!u32i>, ["x", init] {alignment = 4 : i64}
// CIR: %[[RV:[0-9]+]] = cir.alloca !u8i, !cir.ptr<!u8i>, ["__retval"] {alignment = 1 : i64}
// CIR: cir.store %arg0, %[[XPTR]] : !u32i, !cir.ptr<!u32i>
// CIR: %[[XVAL:[0-9]+]] = cir.load{{.*}} %[[XPTR]] : !cir.ptr<!u32i>, !u32i
// CIR: %[[CASTED:[0-9]+]] = cir.cast integral %[[XVAL]] : !u32i -> !u8i
// CIR: cir.store %[[CASTED]], %[[RV]] : !u8i, !cir.ptr<!u8i>
// CIR: %[[R:[0-9]+]] = cir.load{{.*}} %1 : !cir.ptr<!u8i>, !u8i
// CIR: cir.return %[[R]] : !u8i
// CIR: }
// LLVM: define{{.*}} i8 @_Z15cxxstaticcast_0j(i32 %{{[0-9]+}})
// LLVM: %[[LOAD:[0-9]+]] = load i32, ptr %{{[0-9]+}}, align 4
// LLVM: %[[TRUNC:[0-9]+]] = trunc i32 %[[LOAD]] to i8
// LLVM: store i8 %[[TRUNC]], ptr %[[RV:[0-9]+]], align 1
// LLVM: %[[R:[0-9]+]] = load i8, ptr %[[RV]], align 1
// LLVM: ret i8 %[[R]]
int cStyleCasts_0(unsigned x1, int x2, float x3, short x4, double x5) {
// CIR: cir.func{{.*}} @_Z13cStyleCasts_0jifsd
// LLVM: define{{.*}} i32 @_Z13cStyleCasts_0jifsd
char a = (char)x1; // truncate
// CIR: %{{[0-9]+}} = cir.cast integral %{{[0-9]+}} : !u32i -> !s8i
// LLVM: %{{[0-9]+}} = trunc i32 %{{[0-9]+}} to i8
short b = (short)x2; // truncate with sign
// CIR: %{{[0-9]+}} = cir.cast integral %{{[0-9]+}} : !s32i -> !s16i
// LLVM: %{{[0-9]+}} = trunc i32 %{{[0-9]+}} to i16
long long c = (long long)x1; // zero extend
// CIR: %{{[0-9]+}} = cir.cast integral %{{[0-9]+}} : !u32i -> !s64i
// LLVM: %{{[0-9]+}} = zext i32 %{{[0-9]+}} to i64
long long d = (long long)x2; // sign extend
// CIR: %{{[0-9]+}} = cir.cast integral %{{[0-9]+}} : !s32i -> !s64i
// LLVM: %{{[0-9]+}} = sext i32 %{{[0-9]+}} to i64
unsigned ui = (unsigned)x2; // sign drop
// CIR: %{{[0-9]+}} = cir.cast integral %{{[0-9]+}} : !s32i -> !u32i
int si = (int)x1; // sign add
// CIR: %{{[0-9]+}} = cir.cast integral %{{[0-9]+}} : !u32i -> !s32i
bool ib;
int bi = (int)ib; // bool to int
// CIR: %{{[0-9]+}} = cir.cast bool_to_int %{{[0-9]+}} : !cir.bool -> !s32i
// LLVM: %{{[0-9]+}} = zext i1 %{{[0-9]+}} to i32
bool b2 = x2; // int to bool
// CIR: %{{[0-9]+}} = cir.cast int_to_bool %{{[0-9]+}} : !s32i -> !cir.bool
// LLVM: %[[INTTOBOOL:[0-9]+]] = icmp ne i32 %{{[0-9]+}}, 0
// LLVM: zext i1 %[[INTTOBOOL]] to i8
void *p;
bool b3 = p; // ptr to bool
// CIR: %{{[0-9]+}} = cir.cast ptr_to_bool %{{[0-9]+}} : !cir.ptr<!void> -> !cir.bool
// LLVM: %[[PTRTOBOOL:[0-9]+]] = icmp ne ptr %{{[0-9]+}}, null
// LLVM: zext i1 %[[PTRTOBOOL]] to i8
float f;
bool b4 = f; // float to bool
// CIR: %{{[0-9]+}} = cir.cast float_to_bool %{{[0-9]+}} : !cir.float -> !cir.bool
// LLVM: %{{[0-9]+}} = fcmp une float %{{[0-9]+}}, 0.000000e+00
// LLVM: %{{[0-9]+}} = zext i1 %{{[0-9]+}} to i8
double d2 = f; // float to double
// CIR: %{{[0-9]+}} = cir.cast floating %{{[0-9]+}} : !cir.float -> !cir.double
// LLVM: %{{[0-9]+}} = fpext float %{{[0-9]+}} to double
f = d2; // double to float
// CIR: %{{[0-9]+}} = cir.cast floating %{{[0-9]+}} : !cir.double -> !cir.float
// LLVM: %{{[0-9]+}} = fptrunc double %{{[0-9]+}} to float
return 0;
}
bool cptr(void *d) {
bool x = d;
return x;
}
// CIR: cir.func{{.*}} @_Z4cptrPv(%arg0: !cir.ptr<!void>
// CIR: %[[DPTR:[0-9]+]] = cir.alloca !cir.ptr<!void>, !cir.ptr<!cir.ptr<!void>>, ["d", init] {alignment = 8 : i64}
// CIR: %[[DVAL:[0-9]+]] = cir.load{{.*}} %[[DPTR]] : !cir.ptr<!cir.ptr<!void>>, !cir.ptr<!void>
// CIR: %{{[0-9]+}} = cir.cast ptr_to_bool %[[DVAL]] : !cir.ptr<!void> -> !cir.bool
// LLVM-LABEL: define{{.*}} i1 @_Z4cptrPv(ptr %0)
// LLVM: %[[ARG_STORAGE:.*]] = alloca ptr, i64 1
// LLVM: %[[RETVAL:.*]] = alloca i8, i64 1
// LLVM: %[[X_STORAGE:.*]] = alloca i8, i64 1
// LLVM: store ptr %0, ptr %[[ARG_STORAGE]]
// LLVM: %[[LOADED_PTR:.*]] = load ptr, ptr %[[ARG_STORAGE]]
// LLVM: %[[NULL_CHECK:.*]] = icmp ne ptr %[[LOADED_PTR]], null
// LLVM: ret i1
void should_not_cast() {
unsigned x1;
unsigned uu = (unsigned)x1; // identity
bool x2;
bool ib = (bool)x2; // identity
(void) ib; // void cast
}
// CIR: cir.func{{.*}} @_Z15should_not_castv
// CIR-NOT: cir.cast
// CIR: cir.return
typedef int vi4 __attribute__((vector_size(16)));
typedef double vd2 __attribute__((vector_size(16)));
void bitcast() {
vd2 a = {};
vi4 b = (vi4)a;
}
// CIR: %[[D_VEC:.*]] = cir.load{{.*}} {{.*}} : !cir.ptr<!cir.vector<2 x !cir.double>>, !cir.vector<2 x !cir.double>
// CIR: %[[I_VEC:.*]] = cir.cast bitcast %[[D_VEC]] : !cir.vector<2 x !cir.double> -> !cir.vector<4 x !s32i>
// LLVM: %[[D_VEC:.*]] = load <2 x double>, ptr {{.*}}, align 16
// LLVM: %[[I_VEC:.*]] = bitcast <2 x double> %[[D_VEC]] to <4 x i32>
void f(long int start) {
void *p = (void*)start;
}
// CIR: %[[L:.*]] = cir.load {{.*}} : !cir.ptr<!s64i>, !s64i
// CIR: %[[MID:.*]] = cir.cast integral %[[L]] : !s64i -> !u64i
// CIR: cir.cast int_to_ptr %[[MID]] : !u64i -> !cir.ptr<!void>
// LLVM-LABEL: define{{.*}} void @_Z1fl(i64 %0)
// LLVM: %[[ADDR:.*]] = alloca i64, i64 1, align 8
// LLVM: %[[PADDR:.*]] = alloca ptr, i64 1, align 8
// LLVM: store i64 %0, ptr %[[ADDR]], align 8
// LLVM: %[[L:.*]] = load i64, ptr %[[ADDR]], align 8
// LLVM: %[[PTR:.*]] = inttoptr i64 %[[L]] to ptr
// LLVM: store ptr %[[PTR]], ptr %[[PADDR]], align 8
// LLVM: ret void
struct A { int x; };
void int_cast(long ptr) {
((A *)ptr)->x = 0;
}
// CIR: cir.cast int_to_ptr {{.*}} : !u64i -> !cir.ptr<!rec_A>
// LLVM: inttoptr {{.*}} to ptr
void null_cast(long) {
*(int *)0 = 0;
((A *)0)->x = 0;
}
// CIR: %[[NULLPTR:.*]] = cir.const #cir.ptr<null> : !cir.ptr<!s32i>
// CIR: cir.store{{.*}} %{{.*}}, %[[NULLPTR]] : !s32i, !cir.ptr<!s32i>
// CIR: %[[NULLPTR_A:.*]] = cir.const #cir.ptr<null> : !cir.ptr<!rec_A>
// CIR: %[[A_X:.*]] = cir.get_member %[[NULLPTR_A]][0] {name = "x"} : !cir.ptr<!rec_A> -> !cir.ptr<!s32i>
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