1 // RUN: %clang_cc1 -triple aarch64 -target-feature +fp-armv8 -target-abi aapcs -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,HARD 2 // RUN: %clang_cc1 -triple aarch64 -target-feature -fp-armv8 -target-abi aapcs-soft -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,SOFT 3 4 // See also llvm/test/CodeGen/AArch64/soft-float-abi.ll, which checks the LLVM 5 // backend parts of the soft-float ABI. 6 7 // The va_list type does not change between the ABIs 8 // CHECK: %struct.__va_list = type { ptr, ptr, ptr, i32, i32 } 9 10 // Floats are passed in integer registers, this will be handled by the backend. 11 // CHECK: define dso_local half @test0(half noundef %a) 12 // CHECK: define dso_local bfloat @test1(bfloat noundef %a) 13 // CHECK: define dso_local float @test2(float noundef %a) 14 // CHECK: define dso_local double @test3(double noundef %a) 15 // CHECK: define dso_local fp128 @test4(fp128 noundef %a) 16 __fp16 test0(__fp16 a) { return a; } 17 __bf16 test1(__bf16 a) { return a; } 18 float test2(float a) { return a; } 19 double test3(double a) { return a; } 20 long double test4(long double a) { return a; } 21 22 // No types are considered to be HFAs or HVAs by the soft-float PCS, so these 23 // are converted to integer types. 24 struct A { 25 float x; 26 }; 27 // SOFT: define dso_local i32 @test10(i64 %a.coerce) 28 // HARD: define dso_local %struct.A @test10([1 x float] alignstack(8) %a.coerce) 29 struct A test10(struct A a) { return a; } 30 31 struct B { 32 double x; 33 double y; 34 }; 35 // SOFT: define dso_local [2 x i64] @test11([2 x i64] %a.coerce) 36 // HARD: define dso_local %struct.B @test11([2 x double] alignstack(8) %a.coerce) 37 struct B test11(struct B a) { return a; } 38 39 #include <stdarg.h> 40 41 // The layout of the va_list struct is unchanged between the ABIs, but for 42 // aapcs-soft, floating-point arguments will be retreived from the GPR save 43 // area, as if they were an integer type of the same size. 44 // CHECK-LABEL: define dso_local double @test20(i32 noundef %a, ...) 45 // CHECK: %vl = alloca %struct.__va_list, align 8 46 // SOFT: %gr_offs_p = getelementptr inbounds nuw %struct.__va_list, ptr %vl, i32 0, i32 3 47 // SOFT: %reg_top_p = getelementptr inbounds nuw %struct.__va_list, ptr %vl, i32 0, i32 1 48 // HARD: %vr_offs_p = getelementptr inbounds nuw %struct.__va_list, ptr %vl, i32 0, i32 4 49 // HARD: %reg_top_p = getelementptr inbounds nuw %struct.__va_list, ptr %vl, i32 0, i32 2 50 double test20(int a, ...) { 51 va_list vl; 52 va_start(vl, a); 53 return va_arg(vl, double); 54 } 55 56 // Vector types are only available for targets with the correct hardware, and 57 // their calling-convention is left undefined by the soft-float ABI, so they 58 // aren't tested here. 59