84 lines · cpp
1// RUN: %clang_cc1 -triple=arm %s -emit-llvm -O3 -o - | FileCheck %s --check-prefix=CHECK-ARM2// RUN: %clang_cc1 -triple=arm64 %s -emit-llvm -O3 -o - | FileCheck %s --check-prefix=CHECK-ARM643// RUN: %clang_cc1 -triple=i686 %s -emit-llvm -O3 -o - | FileCheck %s --check-prefix=CHECK-X864// RUN: %clang_cc1 -triple=x86_64 %s -emit-llvm -O3 -o - | FileCheck %s --check-prefix=CHECK-X645 6// Sret tests7struct Big {8 int a, b, c, d, e, f, g, h;9};10 11struct Big F1(signed short P0);12 13struct Big F2(signed short P0) {14 signed short P1 = 20391;15 [[clang::musttail]] return F1(P1);16}17 18// CHECK-NOT: alloca19// CHECK-ARM: musttail call arm_aapcscc void @_Z2F1s(ptr dead_on_unwind writable sret(%struct.Big) align 4 %agg.result, i16 noundef signext 20391)20// CHECK-ARM64: musttail call void @_Z2F1s(ptr dead_on_unwind writable sret(%struct.Big) align 4 %agg.result, i16 noundef 20391)21// CHECK-X86: musttail call void @_Z2F1s(ptr dead_on_unwind writable sret(%struct.Big) align 4 %agg.result, i16 noundef signext 20391)22// CHECK-X64: musttail call void @_Z2F1s(ptr dead_on_unwind writable sret(%struct.Big) align 4 %agg.result, i16 noundef signext 20391)23 24struct ReallyBig {25 int a[100];26};27 28// Indirect sret tests29// Function pointer for testing indirect musttail call.30struct FunctionPointers {31 ReallyBig (*F3)(int, int, int, int, float, double);32 ReallyBig (*F4)(int, int, int, char, float, double);33};34 35struct ReallyBig F3(int P0, int P1, int P2, int P3, float P4, double P5);36struct ReallyBig F4(int P0, int P1, int P2, char P3, float P4, double P5);37 38static struct FunctionPointers FP = {F3, F4};39 40struct ReallyBig F5 (int P0, int P1, int P2, int P3, float P4, double P5) {41 [[clang::musttail]] return FP.F3(P0, P1, P2, P3, P4, P5);42}43 44// CHECK-NOT: alloca45// CHECK-ARM: musttail call arm_aapcscc void @_Z2F3iiiifd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i32 noundef %P3, float noundef %P4, double noundef %P5)46// CHECK-ARM64: musttail call void @_Z2F3iiiifd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i32 noundef %P3, float noundef %P4, double noundef %P5)47// CHECK-X86: musttail call void @_Z2F3iiiifd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i32 noundef %P3, float noundef %P4, double noundef %P5)48// CHECK-X64: musttail call void @_Z2F3iiiifd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i32 noundef %P3, float noundef %P4, double noundef %P5)49 50struct ReallyBig F6 (int P0, int P1, int P2, char P3, float P4, double P5) {51 [[clang::musttail]] return FP.F4(P0, P1, P2, P3, P4, P5);52}53 54// Complex and BitInt. Special cases for sret.55// CHECK-NOT: alloca56// CHECK-ARM: musttail call arm_aapcscc void @_Z2F4iiicfd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i8 noundef signext %P3, float noundef %P4, double noundef %P5)57// CHECK-ARM64: musttail call void @_Z2F4iiicfd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i8 noundef %P3, float noundef %P4, double noundef %P5)58// CHECK-X86: musttail call void @_Z2F4iiicfd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i8 noundef signext %P3, float noundef %P4, double noundef %P5)59// CHECK-X64: musttail call void @_Z2F4iiicfd(ptr dead_on_unwind writable sret(%struct.ReallyBig) align 4 %agg.result, i32 noundef %P0, i32 noundef %P1, i32 noundef %P2, i8 noundef signext %P3, float noundef %P4, double noundef %P5)60 61double _Complex F7(signed short P0);62 63double _Complex F8(signed short P0) {64 signed short P1 = 20391;65 [[clang::musttail]] return F7(P1);66}67 68// CHECK-NOT: alloca69// CHECK-ARM: musttail call arm_aapcscc void @_Z2F7s(ptr dead_on_unwind writable sret({ double, double }) align 8 %agg.result, i16 noundef signext 20391)70// CHECK-ARM64: musttail call noundef { double, double } @_Z2F7s(i16 noundef 20391)71// CHECK-X86: musttail call void @_Z2F7s(ptr dead_on_unwind writable sret({ double, double }) align 4 %agg.result, i16 noundef signext 20391) 72// CHECK-X64: musttail call noundef { double, double } @_Z2F7s(i16 noundef signext 20391)73 74signed _BitInt(100) F9(float P0, float P1, double P2, char P3);75 76signed _BitInt(100) F10(float P0, float P1, double P2, char P3) {77 [[clang::musttail]] return F9(P0, P1, P2, P3);78}79 80// CHECK-NOT: alloca81// CHECK-ARM: musttail call arm_aapcscc void @_Z2F9ffdc(ptr dead_on_unwind writable sret(i128) align 8 %agg.result, float noundef %P0, float noundef %P1, double noundef %P2, i8 noundef signext %P3)82// CHECK-ARM64: musttail call noundef i100 @_Z2F9ffdc(float noundef %P0, float noundef %P1, double noundef %P2, i8 noundef %P3)83// CHECK-X86: musttail call void @_Z2F9ffdc(ptr dead_on_unwind writable sret(i128) align 4 %agg.result, float noundef %P0, float noundef %P1, double noundef %P2, i8 noundef signext %P3)84// CHECK-X64: musttail call noundef { i64, i64 } @_Z2F9ffdc(float noundef %P0, float noundef %P1, double noundef %P2, i8 noundef signext %P3)