b01cddee0e
Cygwin should support calling convention attributes `__cdecl`, `__stdcall`, `__thiscall`, and `__fastcall`, even though they have no effect in x86_64, as done in MinGW. Originally reported in https://cygwin.com/pipermail/cygwin/2025-September/258782.html --------- Co-authored-by: Jeremy Drake <github@jdrake.com>
56 lines
2.8 KiB
C
56 lines
2.8 KiB
C
// RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm -target-cpu skylake-avx512 < %s | FileCheck %s --check-prefixes=CHECK,AVX
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// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm -target-cpu skylake-avx512 < %s | FileCheck %s --check-prefixes=CHECK,AVX
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// RUN: %clang_cc1 -triple x86_64-cygwin -emit-llvm -target-cpu skylake-avx512 < %s | FileCheck %s --check-prefixes=CHECK,AVX
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm -target-cpu skylake-avx512 < %s | FileCheck %s --check-prefixes=CHECK,AVX
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// RUN: %clang_cc1 -triple x86_64-uefi -emit-llvm -target-cpu skylake-avx512 < %s | FileCheck %s --check-prefixes=CHECK,AVX
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// RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm < %s | FileCheck %s --check-prefixes=CHECK,NOAVX
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// RUN: %clang_cc1 -triple x86_64-mingw -emit-llvm < %s | FileCheck %s --check-prefixes=CHECK,NOAVX
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// RUN: %clang_cc1 -triple x86_64-cygwin -emit-llvm < %s | FileCheck %s --check-prefixes=CHECK,NOAVX
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm < %s | FileCheck %s --check-prefixes=CHECK,NOAVX
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// RUN: %clang_cc1 -triple x86_64-uefi -emit-llvm < %s | FileCheck %s --check-prefixes=CHECK,NOAVX
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#define SYSV_CC __attribute__((sysv_abi))
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// Make sure we coerce structs according to the SysV rules instead of passing
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// them indirectly as we would for Win64.
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struct StringRef {
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char *Str;
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__SIZE_TYPE__ Size;
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};
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extern volatile char gc;
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void SYSV_CC take_stringref(struct StringRef s);
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void callit(void) {
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struct StringRef s = {"asdf", 4};
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take_stringref(s);
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}
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// CHECK: define {{(dso_local )?}}void @callit()
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// CHECK: call {{(x86_64_sysvcc )?}}void @take_stringref(ptr {{[^,]*}}, i64 {{[^,]*}})
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// CHECK: declare {{(dso_local )?}}{{(x86_64_sysvcc )?}}void @take_stringref(ptr, i64)
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// Check that we pass vectors directly if the target feature is enabled, and
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// not otherwise.
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typedef __attribute__((vector_size(32))) float my_m256;
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typedef __attribute__((vector_size(64))) float my_m512;
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my_m256 SYSV_CC get_m256(void);
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void SYSV_CC take_m256(my_m256);
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my_m512 SYSV_CC get_m512(void);
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void SYSV_CC take_m512(my_m512);
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void use_vectors(void) {
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my_m256 v1 = get_m256();
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take_m256(v1);
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my_m512 v2 = get_m512();
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take_m512(v2);
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}
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// CHECK: define {{(dso_local )?}}void @use_vectors()
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// AVX: call {{(x86_64_sysvcc )?}}<8 x float> @get_m256()
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// AVX: call {{(x86_64_sysvcc )?}}void @take_m256(<8 x float> noundef %{{.*}})
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// AVX: call {{(x86_64_sysvcc )?}}<16 x float> @get_m512()
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// AVX: call {{(x86_64_sysvcc )?}}void @take_m512(<16 x float> noundef %{{.*}})
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// NOAVX: call {{(x86_64_sysvcc )?}}<8 x float> @get_m256()
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// NOAVX: call {{(x86_64_sysvcc )?}}void @take_m256(ptr noundef byval(<8 x float>) align 32 %{{.*}})
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// NOAVX: call {{(x86_64_sysvcc )?}}<16 x float> @get_m512()
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// NOAVX: call {{(x86_64_sysvcc )?}}void @take_m512(ptr noundef byval(<16 x float>) align 64 %{{.*}})
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