1 ; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -tailcallopt | FileCheck %s --check-prefixes=SDAG,COMMON
2 ; RUN: llc -global-isel -global-isel-abort=1 -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -tailcallopt | FileCheck %s --check-prefixes=GISEL,COMMON
4 declare fastcc void @callee_stack0()
5 declare fastcc void @callee_stack8([8 x i64], i64)
6 declare fastcc void @callee_stack16([8 x i64], i64, i64)
7 declare extern_weak fastcc void @callee_weak()
9 define fastcc void @caller_to0_from0() nounwind {
10 ; COMMON-LABEL: caller_to0_from0:
11 ; COMMON-NEXT: // %bb.
13 tail call fastcc void @callee_stack0()
16 ; COMMON-NEXT: b callee_stack0
19 define fastcc void @caller_to0_from8([8 x i64], i64) {
20 ; COMMON-LABEL: caller_to0_from8:
22 tail call fastcc void @callee_stack0()
25 ; COMMON: add sp, sp, #16
26 ; COMMON-NEXT: b callee_stack0
29 define fastcc void @caller_to8_from0() {
30 ; COMMON-LABEL: caller_to8_from0:
31 ; COMMON: sub sp, sp, #32
33 ; Key point is that the "42" should go #16 below incoming stack
34 ; pointer (we didn't have arg space to reuse).
35 tail call fastcc void @callee_stack8([8 x i64] undef, i64 42)
38 ; COMMON: str {{x[0-9]+}}, [sp, #16]!
39 ; COMMON-NEXT: b callee_stack8
42 define fastcc void @caller_to8_from8([8 x i64], i64 %a) {
43 ; COMMON-LABEL: caller_to8_from8:
44 ; COMMON: sub sp, sp, #16
46 ; Key point is that the "%a" should go where at SP on entry.
47 tail call fastcc void @callee_stack8([8 x i64] undef, i64 42)
50 ; COMMON: str {{x[0-9]+}}, [sp, #16]!
51 ; COMMON-NEXT: b callee_stack8
54 define fastcc void @caller_to16_from8([8 x i64], i64 %a) {
55 ; COMMON-LABEL: caller_to16_from8:
56 ; COMMON: sub sp, sp, #16
58 ; Important point is that the call reuses the "dead" argument space
59 ; above %a on the stack. If it tries to go below incoming-SP then the
60 ; callee will not deallocate the space, even in fastcc.
61 tail call fastcc void @callee_stack16([8 x i64] undef, i64 42, i64 2)
63 ; COMMON: stp {{x[0-9]+}}, {{x[0-9]+}}, [sp, #16]!
64 ; COMMON-NEXT: b callee_stack16
69 define fastcc void @caller_to8_from24([8 x i64], i64 %a, i64 %b, i64 %c) {
70 ; COMMON-LABEL: caller_to8_from24:
71 ; COMMON: sub sp, sp, #16
73 ; Key point is that the "%a" should go where at #16 above SP on entry.
74 tail call fastcc void @callee_stack8([8 x i64] undef, i64 42)
77 ; COMMON: str {{x[0-9]+}}, [sp, #32]!
78 ; COMMON-NEXT: b callee_stack8
82 define fastcc void @caller_to16_from16([8 x i64], i64 %a, i64 %b) {
83 ; COMMON-LABEL: caller_to16_from16:
84 ; COMMON: sub sp, sp, #16
86 ; Here we want to make sure that both loads happen before the stores:
87 ; otherwise either %a or %b will be wrongly clobbered.
88 tail call fastcc void @callee_stack16([8 x i64] undef, i64 %b, i64 %a)
91 ; COMMON: ldp {{x[0-9]+}}, {{x[0-9]+}}, [sp, #16]
92 ; COMMON: stp {{x[0-9]+}}, {{x[0-9]+}}, [sp, #16]!
93 ; COMMON-NEXT: b callee_stack16
97 ; Weakly-referenced extern functions cannot be tail-called, as AAELF does
98 ; not define the behaviour of branch instructions to undefined weak symbols.
99 define fastcc void @caller_weak() {
100 ; COMMON-LABEL: caller_weak:
101 ; COMMON: bl callee_weak
102 tail call void @callee_weak()
106 declare { [2 x float] } @get_vec2()
108 define { [3 x float] } @test_add_elem() {
109 ; SDAG-LABEL: test_add_elem:
111 ; SDAG: fmov s2, #1.0
113 ; GISEL-LABEL: test_add_elem:
114 ; GISEL: fmov s8, #1.00000000
116 ; GISEL: ldr x30, [sp, #8]
117 ; GISEL: mov v2.16b, v8.16b
118 ; GISEL: ldr d8, [sp], #16
121 %call = tail call { [2 x float] } @get_vec2()
122 %arr = extractvalue { [2 x float] } %call, 0
123 %arr.0 = extractvalue [2 x float] %arr, 0
124 %arr.1 = extractvalue [2 x float] %arr, 1
126 %res.0 = insertvalue { [3 x float] } undef, float %arr.0, 0, 0
127 %res.01 = insertvalue { [3 x float] } %res.0, float %arr.1, 0, 1
128 %res.012 = insertvalue { [3 x float] } %res.01, float 1.000000e+00, 0, 2
129 ret { [3 x float] } %res.012
132 declare double @get_double()
133 define { double, [2 x double] } @test_mismatched_insert() {
134 ; COMMON-LABEL: test_mismatched_insert:
135 ; COMMON: bl get_double
136 ; COMMON: bl get_double
137 ; COMMON: bl get_double
140 %val0 = call double @get_double()
141 %val1 = call double @get_double()
142 %val2 = tail call double @get_double()
144 %res.0 = insertvalue { double, [2 x double] } undef, double %val0, 0
145 %res.01 = insertvalue { double, [2 x double] } %res.0, double %val1, 1, 0
146 %res.012 = insertvalue { double, [2 x double] } %res.01, double %val2, 1, 1
148 ret { double, [2 x double] } %res.012