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105dd60fc8
This patch makes determining alignment and width of BitInt to be target ABI specific and makes it consistent with [Procedure Call Standard for the Arm® 64-bit Architecture (AArch64)](https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst) for AArch64 targets.
166 lines
4.0 KiB
C++
166 lines
4.0 KiB
C++
// REQUIRES: arm-registered-target
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// RUN: %clang_cc1 -triple aarch64-none-elf \
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// RUN: -O2 \
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// RUN: -emit-llvm -fexperimental-max-bitint-width=1024 -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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long x, y;
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};
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void f0(long, S);
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void f0m(long, long, long, long, long, 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(i64 noundef 1, [2 x i64] [i64 6, i64 7]
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// CHECK: call void @f0m{{.*}}[2 x i64] [i64 6, i64 7]
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// CHECK: declare void @f0(i64 noundef, [2 x i64])
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// CHECK: declare void @f0m(i64 noundef, i64 noundef, i64 noundef, i64 noundef, i64 noundef, [2 x i64])
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// Aligned struct, passed according to its natural alignment.
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struct __attribute__((aligned(16))) S16 {
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long x, y;
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} s16;
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void f1(long, S16);
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void f1m(long, long, long, long, long, S16);
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void g1() {
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S16 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{{.*}}[2 x i64] [i64 6, i64 7]
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// CHECK: call void @f1m{{.*}}[2 x i64] [i64 6, i64 7]
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// CHECK: declare void @f1(i64 noundef, [2 x i64])
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// CHECK: declare void @f1m(i64 noundef, i64 noundef, i64 noundef, i64 noundef, i64 noundef, [2 x i64])
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// Increased natural alignment.
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struct SF16 {
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long x __attribute__((aligned(16)));
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long y;
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};
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void f3(long, SF16);
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void f3m(long, long, long, long, long, SF16);
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void g3() {
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SF16 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(i64 noundef 1, i128 129127208515966861318)
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// CHECK: call void @f3m(i64 noundef 1, i64 noundef 2, i64 noundef 3, i64 noundef 4, i64 noundef 5, i128 129127208515966861318)
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// CHECK: declare void @f3(i64 noundef, i128)
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// CHECK: declare void @f3m(i64 noundef, i64 noundef, i64 noundef, i64 noundef, i64 noundef, i128)
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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 u;
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};
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void f4(int, P);
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void f4m(int, int, int, int, int, P);
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void g4() {
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P 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 noundef 1, [2 x i64] [i64 30064771078, i64 0])
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// CHECK: void @f4m(i32 noundef 1, i32 noundef 2, i32 noundef 3, i32 noundef 4, i32 noundef 5, [2 x i64] [i64 30064771078, i64 0])
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// CHECK: declare void @f4(i32 noundef, [2 x i64])
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// CHECK: declare void @f4m(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, [2 x i64])
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// Packed structure, overaligned, same as above.
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struct __attribute__((packed, aligned(16))) P16 {
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int x;
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long y;
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};
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void f5(int, P16);
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void f5m(int, int, int, int, int, P16);
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void g5() {
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P16 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 noundef 1, [2 x i64] [i64 30064771078, i64 0])
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// CHECK: void @f5m(i32 noundef 1, i32 noundef 2, i32 noundef 3, i32 noundef 4, i32 noundef 5, [2 x i64] [i64 30064771078, i64 0])
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// CHECK: declare void @f5(i32 noundef, [2 x i64])
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// CHECK: declare void @f5m(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, [2 x i64])
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//BitInt alignment
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struct BITINT129 {
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char ch;
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unsigned _BitInt(129) v;
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};
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int test_bitint129(){
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return __builtin_offsetof(struct BITINT129, v);
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}
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// CHECK: ret i32 16
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struct BITINT127 {
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char ch;
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_BitInt(127) v;
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};
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int test_bitint127(){
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return __builtin_offsetof(struct BITINT127, v);
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}
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// CHECK: ret i32 16
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struct BITINT63 {
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char ch;
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_BitInt(63) v;
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};
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int test_bitint63(){
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return __builtin_offsetof(struct BITINT63, v);
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}
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// CHECK: ret i32 8
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struct BITINT32 {
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char ch;
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unsigned _BitInt(32) v;
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};
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int test_bitint32(){
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return __builtin_offsetof(struct BITINT32, v);
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}
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// CHECK: ret i32 4
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struct BITINT9 {
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char ch;
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unsigned _BitInt(9) v;
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};
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int test_bitint9(){
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return __builtin_offsetof(struct BITINT9, v);
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}
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// CHECK: ret i32 2
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struct BITINT8 {
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char ch;
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unsigned _BitInt(8) v;
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};
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int test_bitint8(){
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return __builtin_offsetof(struct BITINT8, v);
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}
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// CHECK: ret i32 1
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}
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