1; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -O0 | FileCheck %s 2; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -O0 -disable-fp-elim | FileCheck -check-prefix CHECK-WITHFP %s 3 4; Make sure a reasonably sane prologue and epilogue are 5; generated. This test is not robust in the face of an frame-handling 6; evolving, but still has value for unrelated changes, I 7; believe. 8; 9; In particular, it will fail when ldp/stp are used for frame setup, 10; when FP-elim is implemented, and when addressing from FP is 11; implemented. 12 13@var = global i64 0 14@local_addr = global i64* null 15 16declare void @foo() 17 18define void @trivial_func() nounwind { 19; CHECK: trivial_func: // @trivial_func 20; CHECK-NEXT: // BB#0 21; CHECK-NEXT: ret 22 23 ret void 24} 25 26define void @trivial_fp_func() { 27; CHECK-WITHFP-LABEL: trivial_fp_func: 28 29; CHECK-WITHFP: sub sp, sp, #16 30; CHECK-WITHFP: stp x29, x30, [sp] 31; CHECK-WITHFP-NEXT: mov x29, sp 32 33; Dont't really care, but it would be a Bad Thing if this came after the epilogue. 34; CHECK: bl foo 35 call void @foo() 36 ret void 37 38; CHECK-WITHFP: ldp x29, x30, [sp] 39; CHECK-WITHFP: add sp, sp, #16 40 41; CHECK-WITHFP: ret 42} 43 44define void @stack_local() { 45 %local_var = alloca i64 46; CHECK-LABEL: stack_local: 47; CHECK: sub sp, sp, #16 48 49 %val = load i64* @var 50 store i64 %val, i64* %local_var 51; CHECK: str {{x[0-9]+}}, [sp, #{{[0-9]+}}] 52 53 store i64* %local_var, i64** @local_addr 54; CHECK: add {{x[0-9]+}}, sp, #{{[0-9]+}} 55 56 ret void 57} 58