1; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s 2 3declare dso_local swifttailcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4) 4 5define dso_local swifttailcc i32 @tailcaller(i32 %in1, i32 %in2) nounwind { 6; CHECK-LABEL: tailcaller: 7; CHECK-NOT: subq 8; CHECK-NOT: addq 9; CHECK: jmp tailcallee 10entry: 11 %tmp11 = musttail call swifttailcc i32 @tailcallee(i32 %in1, i32 %in2, i32 %in1, i32 %in2) 12 ret i32 %tmp11 13} 14 15declare dso_local swifttailcc ptr @alias_callee() 16 17define swifttailcc noalias ptr @noalias_caller() nounwind { 18; CHECK-LABEL: noalias_caller: 19; CHECK: jmp alias_callee 20 %p = musttail call swifttailcc ptr @alias_callee() 21 ret ptr %p 22} 23 24declare dso_local swifttailcc noalias ptr @noalias_callee() 25 26define dso_local swifttailcc ptr @alias_caller() nounwind { 27; CHECK-LABEL: alias_caller: 28; CHECK: jmp noalias_callee # TAILCALL 29 %p = musttail call swifttailcc noalias ptr @noalias_callee() 30 ret ptr %p 31} 32 33declare dso_local swifttailcc i32 @i32_callee() 34 35define dso_local swifttailcc i32 @ret_undef() nounwind { 36; CHECK-LABEL: ret_undef: 37; CHECK: jmp i32_callee # TAILCALL 38 %p = musttail call swifttailcc i32 @i32_callee() 39 ret i32 undef 40} 41 42declare dso_local swifttailcc void @does_not_return() 43 44define dso_local swifttailcc i32 @noret() nounwind { 45; CHECK-LABEL: noret: 46; CHECK: jmp does_not_return 47 tail call swifttailcc void @does_not_return() 48 unreachable 49} 50 51define dso_local swifttailcc void @void_test(i32, i32, i32, i32) { 52; CHECK-LABEL: void_test: 53; CHECK: jmp void_test 54 entry: 55 musttail call swifttailcc void @void_test( i32 %0, i32 %1, i32 %2, i32 %3) 56 ret void 57} 58 59define dso_local swifttailcc i1 @i1test(i32, i32, i32, i32) { 60; CHECK-LABEL: i1test: 61; CHECK: jmp i1test 62 entry: 63 %4 = musttail call swifttailcc i1 @i1test( i32 %0, i32 %1, i32 %2, i32 %3) 64 ret i1 %4 65} 66