forked from OSchip/llvm-project
114 lines
4.3 KiB
C++
114 lines
4.3 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s
|
|
|
|
template<typename T>
|
|
struct S {
|
|
static int n;
|
|
};
|
|
template<typename T> int S<T>::n = 5;
|
|
|
|
int f() {
|
|
// Make sure that the reference here is enough to trigger the instantiation of
|
|
// the static data member.
|
|
// CHECK: @_ZN1SIiE1nE = linkonce_odr global i32 5
|
|
int a[S<int>::n];
|
|
return sizeof a;
|
|
}
|
|
|
|
// rdar://problem/9506377
|
|
void test0(void *array, int n) {
|
|
// CHECK-LABEL: define void @_Z5test0Pvi(
|
|
// CHECK: [[ARRAY:%.*]] = alloca i8*, align 8
|
|
// CHECK-NEXT: [[N:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: [[REF:%.*]] = alloca i16*, align 8
|
|
// CHECK-NEXT: [[S:%.*]] = alloca i16, align 2
|
|
// CHECK-NEXT: store i8*
|
|
// CHECK-NEXT: store i32
|
|
|
|
// Capture the bounds.
|
|
// CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[N]], align 4
|
|
// CHECK-NEXT: [[DIM0:%.*]] = zext i32 [[T0]] to i64
|
|
// CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[N]], align 4
|
|
// CHECK-NEXT: [[T1:%.*]] = add nsw i32 [[T0]], 1
|
|
// CHECK-NEXT: [[DIM1:%.*]] = zext i32 [[T1]] to i64
|
|
typedef short array_t[n][n+1];
|
|
|
|
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[ARRAY]], align 8
|
|
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to i16*
|
|
// CHECK-NEXT: store i16* [[T1]], i16** [[REF]], align 8
|
|
array_t &ref = *(array_t*) array;
|
|
|
|
// CHECK-NEXT: [[T0:%.*]] = load i16*, i16** [[REF]]
|
|
// CHECK-NEXT: [[T1:%.*]] = mul nsw i64 1, [[DIM1]]
|
|
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i16, i16* [[T0]], i64 [[T1]]
|
|
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i16, i16* [[T2]], i64 2
|
|
// CHECK-NEXT: store i16 3, i16* [[T3]]
|
|
ref[1][2] = 3;
|
|
|
|
// CHECK-NEXT: [[T0:%.*]] = load i16*, i16** [[REF]]
|
|
// CHECK-NEXT: [[T1:%.*]] = mul nsw i64 4, [[DIM1]]
|
|
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i16, i16* [[T0]], i64 [[T1]]
|
|
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i16, i16* [[T2]], i64 5
|
|
// CHECK-NEXT: [[T4:%.*]] = load i16, i16* [[T3]]
|
|
// CHECK-NEXT: store i16 [[T4]], i16* [[S]], align 2
|
|
short s = ref[4][5];
|
|
|
|
// CHECK-NEXT: ret void
|
|
}
|
|
|
|
|
|
void test2(int b) {
|
|
// CHECK-LABEL: define void {{.*}}test2{{.*}}(i32 %b)
|
|
int varr[b];
|
|
// get the address of %b by checking the first store that stores it
|
|
//CHECK: store i32 %b, i32* [[PTR_B:%.*]]
|
|
|
|
// get the size of the VLA by getting the first load of the PTR_B
|
|
//CHECK: [[VLA_NUM_ELEMENTS_PREZEXT:%.*]] = load i32, i32* [[PTR_B]]
|
|
//CHECK-NEXT: [[VLA_NUM_ELEMENTS_PRE:%.*]] = zext i32 [[VLA_NUM_ELEMENTS_PREZEXT]]
|
|
|
|
b = 15;
|
|
//CHECK: store i32 15, i32* [[PTR_B]]
|
|
|
|
// Now get the sizeof, and then divide by the element size
|
|
|
|
|
|
//CHECK: [[VLA_SIZEOF:%.*]] = mul nuw i64 4, [[VLA_NUM_ELEMENTS_PRE]]
|
|
//CHECK-NEXT: [[VLA_NUM_ELEMENTS_POST:%.*]] = udiv i64 [[VLA_SIZEOF]], 4
|
|
//CHECK-NEXT: [[VLA_END_PTR:%.*]] = getelementptr inbounds i32, i32* {{%.*}}, i64 [[VLA_NUM_ELEMENTS_POST]]
|
|
//CHECK-NEXT: store i32* [[VLA_END_PTR]], i32** %__end
|
|
for (int d : varr) 0;
|
|
}
|
|
|
|
void test3(int b, int c) {
|
|
// CHECK-LABEL: define void {{.*}}test3{{.*}}(i32 %b, i32 %c)
|
|
int varr[b][c];
|
|
// get the address of %b by checking the first store that stores it
|
|
//CHECK: store i32 %b, i32* [[PTR_B:%.*]]
|
|
//CHECK-NEXT: store i32 %c, i32* [[PTR_C:%.*]]
|
|
|
|
// get the size of the VLA by getting the first load of the PTR_B
|
|
//CHECK: [[VLA_DIM1_PREZEXT:%.*]] = load i32, i32* [[PTR_B]]
|
|
//CHECK-NEXT: [[VLA_DIM1_PRE:%.*]] = zext i32 [[VLA_DIM1_PREZEXT]]
|
|
//CHECK: [[VLA_DIM2_PREZEXT:%.*]] = load i32, i32* [[PTR_C]]
|
|
//CHECK-NEXT: [[VLA_DIM2_PRE:%.*]] = zext i32 [[VLA_DIM2_PREZEXT]]
|
|
|
|
b = 15;
|
|
c = 15;
|
|
//CHECK: store i32 15, i32* [[PTR_B]]
|
|
//CHECK: store i32 15, i32* [[PTR_C]]
|
|
// Now get the sizeof, and then divide by the element size
|
|
|
|
// multiply the two dimensions, then by the element type and then divide by the sizeof dim2
|
|
//CHECK: [[VLA_DIM1_X_DIM2:%.*]] = mul nuw i64 [[VLA_DIM1_PRE]], [[VLA_DIM2_PRE]]
|
|
//CHECK-NEXT: [[VLA_SIZEOF:%.*]] = mul nuw i64 4, [[VLA_DIM1_X_DIM2]]
|
|
//CHECK-NEXT: [[VLA_SIZEOF_DIM2:%.*]] = mul nuw i64 4, [[VLA_DIM2_PRE]]
|
|
//CHECK-NEXT: [[VLA_NUM_ELEMENTS:%.*]] = udiv i64 [[VLA_SIZEOF]], [[VLA_SIZEOF_DIM2]]
|
|
//CHECK-NEXT: [[VLA_END_INDEX:%.*]] = mul nsw i64 [[VLA_NUM_ELEMENTS]], [[VLA_DIM2_PRE]]
|
|
//CHECK-NEXT: [[VLA_END_PTR:%.*]] = getelementptr inbounds i32, i32* {{%.*}}, i64 [[VLA_END_INDEX]]
|
|
//CHECK-NEXT: store i32* [[VLA_END_PTR]], i32** %__end
|
|
|
|
for (auto &d : varr) 0;
|
|
}
|
|
|
|
|