Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/AArch64/sibling-call.ll

@@ -1,97 +0,0 @@
-; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -aarch64-enable-ldst-opt=0 | FileCheck %s
-
-declare void @callee_stack0()
-declare void @callee_stack8([8 x i32], i64)
-declare void @callee_stack16([8 x i32], i64, i64)
-
-define void @caller_to0_from0() nounwind {
-; CHECK-LABEL: caller_to0_from0:
-; CHECK-NEXT: // %bb.
-  tail call void @callee_stack0()
-  ret void
-; CHECK-NEXT: b callee_stack0
-}
-
-define void @caller_to0_from8([8 x i32], i64) nounwind{
-; CHECK-LABEL: caller_to0_from8:
-; CHECK-NEXT: // %bb.
-
-  tail call void @callee_stack0()
-  ret void
-; CHECK-NEXT: b callee_stack0
-}
-
-define void @caller_to8_from0() {
-; CHECK-LABEL: caller_to8_from0:
-
-; Caller isn't going to clean up any extra stack we allocate, so it
-; can't be a tail call.
-  tail call void @callee_stack8([8 x i32] undef, i64 42)
-  ret void
-; CHECK: bl callee_stack8
-}
-
-define void @caller_to8_from8([8 x i32], i64 %a) {
-; CHECK-LABEL: caller_to8_from8:
-; CHECK-NOT: sub sp, sp,
-
-; This should reuse our stack area for the 42
-  tail call void @callee_stack8([8 x i32] undef, i64 42)
-  ret void
-; CHECK: str {{x[0-9]+}}, [sp]
-; CHECK-NEXT: b callee_stack8
-}
-
-define void @caller_to16_from8([8 x i32], i64 %a) {
-; CHECK-LABEL: caller_to16_from8:
-
-; Shouldn't be a tail call: we can't use SP+8 because our caller might
-; have something there. This may sound obvious but implementation does
-; some funky aligning.
-  tail call void @callee_stack16([8 x i32] undef, i64 undef, i64 undef)
-; CHECK: bl callee_stack16
-  ret void
-}
-
-define void @caller_to8_from24([8 x i32], i64 %a, i64 %b, i64 %c) {
-; CHECK-LABEL: caller_to8_from24:
-; CHECK-NOT: sub sp, sp
-
-; Reuse our area, putting "42" at incoming sp
-  tail call void @callee_stack8([8 x i32] undef, i64 42)
-  ret void
-; CHECK: str {{x[0-9]+}}, [sp]
-; CHECK-NEXT: b callee_stack8
-}
-
-define void @caller_to16_from16([8 x i32], i64 %a, i64 %b) {
-; CHECK-LABEL: caller_to16_from16:
-; CHECK-NOT: sub sp, sp,
-
-; Here we want to make sure that both loads happen before the stores:
-; otherwise either %a or %b will be wrongly clobbered.
-  tail call void @callee_stack16([8 x i32] undef, i64 %b, i64 %a)
-  ret void
-
-; CHECK: ldr [[VAL0:x[0-9]+]],
-; CHECK: ldr [[VAL1:x[0-9]+]],
-; CHECK: str [[VAL0]],
-; CHECK: str [[VAL1]],
-
-; CHECK-NOT: add sp, sp,
-; CHECK: b callee_stack16
-}
-
-@func = global void(i32)* null
-
-define void @indirect_tail() {
-; CHECK-LABEL: indirect_tail:
-; CHECK-NOT: sub sp, sp
-
-  %fptr = load void(i32)*, void(i32)** @func
-  tail call void %fptr(i32 42)
-  ret void
-; CHECK: ldr [[FPTR:x[1-9]+]], [{{x[0-9]+}}, {{#?}}:lo12:func]
-; CHECK: mov w0, #{{42|0x2a}}
-; CHECK: br [[FPTR]]
-}