1 ; RUN: llc < %s -mtriple=arm64-eabi -aarch64-enable-stp-suppress=false -verify-machineinstrs -mcpu=cyclone | FileCheck %s
4 ; CHECK: stp w0, w1, [x2]
5 define void @stp_int(i32 %a, i32 %b, i32* nocapture %p) nounwind {
6 store i32 %a, i32* %p, align 4
7 %add.ptr = getelementptr inbounds i32, i32* %p, i64 1
8 store i32 %b, i32* %add.ptr, align 4
12 ; CHECK-LABEL: stp_long
13 ; CHECK: stp x0, x1, [x2]
14 define void @stp_long(i64 %a, i64 %b, i64* nocapture %p) nounwind {
15 store i64 %a, i64* %p, align 8
16 %add.ptr = getelementptr inbounds i64, i64* %p, i64 1
17 store i64 %b, i64* %add.ptr, align 8
21 ; CHECK-LABEL: stp_float
22 ; CHECK: stp s0, s1, [x0]
23 define void @stp_float(float %a, float %b, float* nocapture %p) nounwind {
24 store float %a, float* %p, align 4
25 %add.ptr = getelementptr inbounds float, float* %p, i64 1
26 store float %b, float* %add.ptr, align 4
30 ; CHECK-LABEL: stp_double
31 ; CHECK: stp d0, d1, [x0]
32 define void @stp_double(double %a, double %b, double* nocapture %p) nounwind {
33 store double %a, double* %p, align 8
34 %add.ptr = getelementptr inbounds double, double* %p, i64 1
35 store double %b, double* %add.ptr, align 8
39 ; CHECK-LABEL: stp_doublex2
40 ; CHECK: stp q0, q1, [x0]
41 define void @stp_doublex2(<2 x double> %a, <2 x double> %b, <2 x double>* nocapture %p) nounwind {
42 store <2 x double> %a, <2 x double>* %p, align 16
43 %add.ptr = getelementptr inbounds <2 x double>, <2 x double>* %p, i64 1
44 store <2 x double> %b, <2 x double>* %add.ptr, align 16
48 ; Test the load/store optimizer---combine ldurs into a ldp, if appropriate
49 define void @stur_int(i32 %a, i32 %b, i32* nocapture %p) nounwind {
50 ; CHECK-LABEL: stur_int
51 ; CHECK: stp w{{[0-9]+}}, {{w[0-9]+}}, [x{{[0-9]+}}, #-8]
53 %p1 = getelementptr inbounds i32, i32* %p, i32 -1
54 store i32 %a, i32* %p1, align 2
55 %p2 = getelementptr inbounds i32, i32* %p, i32 -2
56 store i32 %b, i32* %p2, align 2
60 define void @stur_long(i64 %a, i64 %b, i64* nocapture %p) nounwind {
61 ; CHECK-LABEL: stur_long
62 ; CHECK: stp x{{[0-9]+}}, {{x[0-9]+}}, [x{{[0-9]+}}, #-16]
64 %p1 = getelementptr inbounds i64, i64* %p, i32 -1
65 store i64 %a, i64* %p1, align 2
66 %p2 = getelementptr inbounds i64, i64* %p, i32 -2
67 store i64 %b, i64* %p2, align 2
71 define void @stur_float(float %a, float %b, float* nocapture %p) nounwind {
72 ; CHECK-LABEL: stur_float
73 ; CHECK: stp s{{[0-9]+}}, {{s[0-9]+}}, [x{{[0-9]+}}, #-8]
75 %p1 = getelementptr inbounds float, float* %p, i32 -1
76 store float %a, float* %p1, align 2
77 %p2 = getelementptr inbounds float, float* %p, i32 -2
78 store float %b, float* %p2, align 2
82 define void @stur_double(double %a, double %b, double* nocapture %p) nounwind {
83 ; CHECK-LABEL: stur_double
84 ; CHECK: stp d{{[0-9]+}}, {{d[0-9]+}}, [x{{[0-9]+}}, #-16]
86 %p1 = getelementptr inbounds double, double* %p, i32 -1
87 store double %a, double* %p1, align 2
88 %p2 = getelementptr inbounds double, double* %p, i32 -2
89 store double %b, double* %p2, align 2
93 define void @stur_doublex2(<2 x double> %a, <2 x double> %b, <2 x double>* nocapture %p) nounwind {
94 ; CHECK-LABEL: stur_doublex2
95 ; CHECK: stp q{{[0-9]+}}, q{{[0-9]+}}, [x{{[0-9]+}}, #-32]
97 %p1 = getelementptr inbounds <2 x double>, <2 x double>* %p, i32 -1
98 store <2 x double> %a, <2 x double>* %p1, align 2
99 %p2 = getelementptr inbounds <2 x double>, <2 x double>* %p, i32 -2
100 store <2 x double> %b, <2 x double>* %p2, align 2
104 define void @splat_v4i32(i32 %v, i32 *%p) {
107 ; CHECK-LABEL: splat_v4i32
108 ; CHECK-DAG: dup v0.4s, w0
109 ; CHECK-DAG: str q0, [x1]
112 %p17 = insertelement <4 x i32> undef, i32 %v, i32 0
113 %p18 = insertelement <4 x i32> %p17, i32 %v, i32 1
114 %p19 = insertelement <4 x i32> %p18, i32 %v, i32 2
115 %p20 = insertelement <4 x i32> %p19, i32 %v, i32 3
116 %p21 = bitcast i32* %p to <4 x i32>*
117 store <4 x i32> %p20, <4 x i32>* %p21, align 4
121 ; Check that a non-splat store that is storing a vector created by 4
122 ; insertelements that is not a splat vector does not get split.
123 define void @nosplat_v4i32(i32 %v, i32 *%p) {
126 ; CHECK-LABEL: nosplat_v4i32:
128 ; CHECK: ldr q[[REG1:[0-9]+]],
129 ; CHECK-DAG: mov v[[REG1]].s[1], w0
130 ; CHECK-DAG: mov v[[REG1]].s[2], w0
131 ; CHECK-DAG: mov v[[REG1]].s[3], w0
132 ; CHECK: str q[[REG1]], [x1]
135 %p17 = insertelement <4 x i32> undef, i32 %v, i32 %v
136 %p18 = insertelement <4 x i32> %p17, i32 %v, i32 1
137 %p19 = insertelement <4 x i32> %p18, i32 %v, i32 2
138 %p20 = insertelement <4 x i32> %p19, i32 %v, i32 3
139 %p21 = bitcast i32* %p to <4 x i32>*
140 store <4 x i32> %p20, <4 x i32>* %p21, align 4
144 ; Check that a non-splat store that is storing a vector created by 4
145 ; insertelements that is not a splat vector does not get split.
146 define void @nosplat2_v4i32(i32 %v, i32 *%p, <4 x i32> %vin) {
149 ; CHECK-LABEL: nosplat2_v4i32:
150 ; CHECK: mov v[[REG1]].s[1], w0
151 ; CHECK-DAG: mov v[[REG1]].s[2], w0
152 ; CHECK-DAG: mov v[[REG1]].s[3], w0
153 ; CHECK: str q[[REG1]], [x1]
156 %p18 = insertelement <4 x i32> %vin, i32 %v, i32 1
157 %p19 = insertelement <4 x i32> %p18, i32 %v, i32 2
158 %p20 = insertelement <4 x i32> %p19, i32 %v, i32 3
159 %p21 = bitcast i32* %p to <4 x i32>*
160 store <4 x i32> %p20, <4 x i32>* %p21, align 4
164 ; Read of %b to compute %tmp2 shouldn't prevent formation of stp
165 ; CHECK-LABEL: stp_int_rar_hazard
166 ; CHECK: ldr [[REG:w[0-9]+]], [x2, #8]
167 ; CHECK: add w8, [[REG]], w1
168 ; CHECK: stp w0, w1, [x2]
170 define i32 @stp_int_rar_hazard(i32 %a, i32 %b, i32* nocapture %p) nounwind {
171 store i32 %a, i32* %p, align 4
172 %ld.ptr = getelementptr inbounds i32, i32* %p, i64 2
173 %tmp = load i32, i32* %ld.ptr, align 4
174 %tmp2 = add i32 %tmp, %b
175 %add.ptr = getelementptr inbounds i32, i32* %p, i64 1
176 store i32 %b, i32* %add.ptr, align 4
180 ; Read of %b to compute %tmp2 shouldn't prevent formation of stp
181 ; CHECK-LABEL: stp_int_rar_hazard_after
182 ; CHECK: ldr [[REG:w[0-9]+]], [x3, #4]
183 ; CHECK: add w0, [[REG]], w2
184 ; CHECK: stp w1, w2, [x3]
186 define i32 @stp_int_rar_hazard_after(i32 %w0, i32 %a, i32 %b, i32* nocapture %p) nounwind {
187 store i32 %a, i32* %p, align 4
188 %ld.ptr = getelementptr inbounds i32, i32* %p, i64 1
189 %tmp = load i32, i32* %ld.ptr, align 4
190 %tmp2 = add i32 %tmp, %b
191 %add.ptr = getelementptr inbounds i32, i32* %p, i64 1
192 store i32 %b, i32* %add.ptr, align 4