| 1 | // RUN: %clang_cc1 -triple thumbv7k-apple-watchos2.0 -target-abi aapcs16 -target-cpu cortex-a7 %s -o - -emit-llvm | FileCheck %s |
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| 2 | |
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| 3 | #include <arm_neon.h> |
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| 4 | |
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| 5 | // Make sure 64 and 128 bit types are naturally aligned by the v7k ABI: |
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| 6 | |
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| 7 | // CHECK: target datalayout = "e-m:o-p:32:32-Fi8-i64:64-a:0:32-n32-S128" |
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| 8 | |
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| 9 | typedef struct { |
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| 10 | float arr[4]; |
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| 11 | } HFA; |
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| 12 | |
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| 13 | // CHECK: define void @simple_hfa([4 x float] %h.coerce) |
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| 14 | void simple_hfa(HFA h) {} |
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| 15 | |
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| 16 | // CHECK: define %struct.HFA @return_simple_hfa |
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| 17 | HFA return_simple_hfa() {} |
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| 18 | |
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| 19 | typedef struct { |
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| 20 | double arr[4]; |
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| 21 | } BigHFA; |
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| 22 | |
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| 23 | // We don't want any padding type to be included by Clang when using the |
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| 24 | // APCS-VFP ABI, that needs to be handled by LLVM if needed. |
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| 25 | |
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| 26 | // CHECK: void @no_padding(i32 %r0, i32 %r1, i32 %r2, [4 x double] %d0_d3.coerce, [4 x double] %d4_d7.coerce, [4 x double] %sp.coerce, i64 %split) |
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| 27 | void no_padding(int r0, int r1, int r2, BigHFA d0_d3, BigHFA d4_d7, BigHFA sp, |
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| 28 | long long split) {} |
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| 29 | |
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| 30 | // Structs larger than 16 bytes should be passed indirectly in space allocated |
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| 31 | // by the caller (a pointer to this storage should be what occurs in the arg |
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| 32 | // list). |
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| 33 | |
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| 34 | typedef struct { |
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| 35 | float x; |
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| 36 | long long y; |
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| 37 | double z; |
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| 38 | } BigStruct; |
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| 39 | |
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| 40 | // CHECK: define void @big_struct_indirect(%struct.BigStruct* %b) |
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| 41 | void big_struct_indirect(BigStruct b) {} |
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| 42 | |
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| 43 | // CHECK: define void @return_big_struct_indirect(%struct.BigStruct* noalias sret |
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| 44 | BigStruct return_big_struct_indirect() {} |
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| 45 | |
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| 46 | // Structs smaller than 16 bytes should be passed directly, and coerced to |
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| 47 | // either [N x i32] or [N x i64] depending on alignment requirements. |
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| 48 | |
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| 49 | typedef struct { |
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| 50 | float x; |
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| 51 | int y; |
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| 52 | double z; |
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| 53 | } SmallStruct; |
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| 54 | |
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| 55 | // CHECK: define void @small_struct_direct([2 x i64] %s.coerce) |
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| 56 | void small_struct_direct(SmallStruct s) {} |
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| 57 | |
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| 58 | // CHECK: define [4 x i32] @return_small_struct_direct() |
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| 59 | SmallStruct return_small_struct_direct() {} |
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| 60 | |
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| 61 | typedef struct { |
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| 62 | float x; |
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| 63 | int y; |
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| 64 | int z; |
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| 65 | } SmallStructSmallAlign; |
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| 66 | |
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| 67 | // CHECK: define void @small_struct_align_direct([3 x i32] %s.coerce) |
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| 68 | void small_struct_align_direct(SmallStructSmallAlign s) {} |
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| 69 | |
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| 70 | typedef struct { |
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| 71 | char x; |
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| 72 | short y; |
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| 73 | } PaddedSmallStruct; |
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| 74 | |
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| 75 | // CHECK: define i32 @return_padded_small_struct() |
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| 76 | PaddedSmallStruct return_padded_small_struct() {} |
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| 77 | |
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| 78 | typedef struct { |
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| 79 | char arr[7]; |
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| 80 | } OddlySizedStruct; |
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| 81 | |
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| 82 | // CHECK: define [2 x i32] @return_oddly_sized_struct() |
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| 83 | OddlySizedStruct return_oddly_sized_struct() {} |
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| 84 | |
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| 85 | // CHECK: define <4 x float> @test_va_arg_vec(i8* %l) |
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| 86 | // CHECK: [[ALIGN_TMP:%.*]] = add i32 {{%.*}}, 15 |
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| 87 | // CHECK: [[ALIGNED:%.*]] = and i32 [[ALIGN_TMP]], -16 |
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| 88 | // CHECK: [[ALIGNED_I8:%.*]] = inttoptr i32 [[ALIGNED]] to i8* |
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| 89 | // CHECK: [[ALIGNED_VEC:%.*]] = bitcast i8* [[ALIGNED_I8]] to <4 x float> |
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| 90 | // CHECK: load <4 x float>, <4 x float>* [[ALIGNED_VEC]], align 16 |
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| 91 | float32x4_t test_va_arg_vec(__builtin_va_list l) { |
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| 92 | return __builtin_va_arg(l, float32x4_t); |
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| 93 | } |
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| 94 | |
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