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; RUN: llc -verify-machineinstrs < %s -mtriple=arm64-none-linux-gnu | FileCheck %s
; RUN: llc -verify-machineinstrs < %s -mtriple=arm64-none-linux-gnu -disable-fp-elim | FileCheck -check-prefix CHECK-WITHFP-ARM64 %s
; Make sure a reasonably sane prologue and epilogue are
; generated. This test is not robust in the face of an frame-handling
; evolving, but still has value for unrelated changes, I
; believe.
;
; In particular, it will fail when ldp/stp are used for frame setup,
; when FP-elim is implemented, and when addressing from FP is
; implemented.
@var = global i64 0
@local_addr = global i64* null
declare void @foo()
define void @trivial_func() nounwind {
; CHECK-LABEL: trivial_func: // @trivial_func
; CHECK-NEXT: // BB#0
; CHECK-NEXT: ret
ret void
}
define void @trivial_fp_func() {
; CHECK-WITHFP-AARCH64-LABEL: trivial_fp_func:
; CHECK-WITHFP-AARCH64: sub sp, sp, #16
; CHECK-WITHFP-AARCH64: stp x29, x30, [sp]
; CHECK-WITHFP-AARCH64-NEXT: mov x29, sp
; CHECK-WITHFP-ARM64-LABEL: trivial_fp_func:
; CHECK-WITHFP-ARM64: stp x29, x30, [sp, #-16]!
; CHECK-WITHFP-ARM64-NEXT: mov x29, sp
; Dont't really care, but it would be a Bad Thing if this came after the epilogue.
; CHECK: bl foo
call void @foo()
ret void
; CHECK-WITHFP: ldp x29, x30, [sp]
; CHECK-WITHFP: add sp, sp, #16
; CHECK-WITHFP: ret
}
define void @stack_local() {
%local_var = alloca i64
; CHECK-LABEL: stack_local:
; CHECK: sub sp, sp, #16
%val = load i64* @var
store i64 %val, i64* %local_var
; CHECK-DAG: str {{x[0-9]+}}, [sp, #{{[0-9]+}}]
store i64* %local_var, i64** @local_addr
; CHECK-DAG: add {{x[0-9]+}}, sp, #{{[0-9]+}}
ret void
}
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