forked from OSchip/llvm-project
142 lines
3.8 KiB
C++
142 lines
3.8 KiB
C++
// REQUIRES: arm-registered-target
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// RUN: %clang_cc1 -triple arm-none-none-eabi \
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// RUN: -O2 \
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// RUN: -target-cpu cortex-a8 \
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// RUN: -emit-llvm -o - %s | FileCheck %s
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extern "C" {
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// Base case, nothing interesting.
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struct S {
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int x, y;
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};
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void f0(int, S);
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void f0m(int, int, int, int, int, S);
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void g0() {
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S s = {6, 7};
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f0(1, s);
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f0m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g0
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// CHECK: call void @f0(i32 1, [2 x i32] [i32 6, i32 7]
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// CHECK: call void @f0m(i32 1, i32 2, i32 3, i32 4, i32 5, [2 x i32] [i32 6, i32 7]
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// CHECK: declare void @f0(i32, [2 x i32])
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// CHECK: declare void @f0m(i32, i32, i32, i32, i32, [2 x i32])
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// Aligned struct, passed according to its natural alignment.
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struct __attribute__((aligned(8))) S8 {
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int x, y;
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} s8;
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void f1(int, S8);
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void f1m(int, int, int, int, int, S8);
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void g1() {
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S8 s = {6, 7};
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f1(1, s);
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f1m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g1
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// CHECK: call void @f1(i32 1, [2 x i32] [i32 6, i32 7]
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// CHECK: call void @f1m(i32 1, i32 2, i32 3, i32 4, i32 5, [2 x i32] [i32 6, i32 7]
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// CHECK: declare void @f1(i32, [2 x i32])
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// CHECK: declare void @f1m(i32, i32, i32, i32, i32, [2 x i32])
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// Aligned struct, passed according to its natural alignment.
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struct alignas(16) S16 {
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int x, y;
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};
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extern "C" void f2(int, S16);
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extern "C" void f2m(int, int, int, int, int, S16);
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void g2() {
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S16 s = {6, 7};
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f2(1, s);
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f2m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g2
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// CHECK: call void @f2(i32 1, [4 x i32] [i32 6, i32 7
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// CHECK: call void @f2m(i32 1, i32 2, i32 3, i32 4, i32 5, [4 x i32] [i32 6, i32 7
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// CHECK: declare void @f2(i32, [4 x i32])
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// CHECK: declare void @f2m(i32, i32, i32, i32, i32, [4 x i32])
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// Increased natural alignment.
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struct SF8 {
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int x __attribute__((aligned(8)));
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int y;
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};
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void f3(int, SF8);
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void f3m(int, int, int, int, int, SF8);
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void g3() {
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SF8 s = {6, 7};
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f3(1, s);
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f3m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g3
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// CHECK: call void @f3(i32 1, [1 x i64] [i64 30064771078]
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// CHECK: call void @f3m(i32 1, i32 2, i32 3, i32 4, i32 5, [1 x i64] [i64 30064771078]
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// CHECK: declare void @f3(i32, [1 x i64])
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// CHECK: declare void @f3m(i32, i32, i32, i32, i32, [1 x i64])
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// Increased natural alignment, capped to 8 though.
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struct SF16 {
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int x;
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int y alignas(16);
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int z, a, b, c, d, e, f, g, h, i, j, k;
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};
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void f4(int, SF16);
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void f4m(int, int, int, int, int, SF16);
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void g4() {
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SF16 s = {6, 7};
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f4(1, s);
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f4m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g4
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// CHECK: call void @f4(i32 1, %struct.SF16* byval nonnull align 8
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// CHECK: call void @f4m(i32 1, i32 2, i32 3, i32 4, i32 5, %struct.SF16* byval nonnull align 8
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// CHECK: declare void @f4(i32, %struct.SF16* byval align 8)
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// CHECK: declare void @f4m(i32, i32, i32, i32, i32, %struct.SF16* byval align 8)
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// Packed structure.
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struct __attribute__((packed)) P {
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int x;
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long long u;
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};
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void f5(int, P);
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void f5m(int, int, int, int, int, P);
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void g5() {
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P s = {6, 7};
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f5(1, s);
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f5m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g5
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// CHECK: call void @f5(i32 1, [3 x i32] [i32 6, i32 7, i32 0])
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// CHECK: call void @f5m(i32 1, i32 2, i32 3, i32 4, i32 5, [3 x i32] [i32 6, i32 7, i32 0])
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// CHECK: declare void @f5(i32, [3 x i32])
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// CHECK: declare void @f5m(i32, i32, i32, i32, i32, [3 x i32])
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// Packed and aligned, alignement causes padding at the end.
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struct __attribute__((packed, aligned(8))) P8 {
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int x;
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long long u;
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};
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void f6(int, P8);
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void f6m(int, int, int, int, int, P8);
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void g6() {
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P8 s = {6, 7};
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f6(1, s);
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f6m(1, 2, 3, 4, 5, s);
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}
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// CHECK: define void @g6
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// CHECK: call void @f6(i32 1, [4 x i32] [i32 6, i32 7, i32 0, i32 0])
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// CHECK: call void @f6m(i32 1, i32 2, i32 3, i32 4, i32 5, [4 x i32] [i32 6, i32 7, i32 0, i32 0])
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// CHECK: declare void @f6(i32, [4 x i32])
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// CHECK: declare void @f6m(i32, i32, i32, i32, i32, [4 x i32])
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}
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