source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/AArch64/arm64-stp.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 4.3 KB
Line 
1; RUN: llc < %s -march=arm64 -aarch64-stp-suppress=false -verify-machineinstrs -mcpu=cyclone | FileCheck %s
2
3; CHECK-LABEL: stp_int
4; CHECK: stp w0, w1, [x2]
5define 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
9  ret void
10}
11
12; CHECK-LABEL: stp_long
13; CHECK: stp x0, x1, [x2]
14define 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
18  ret void
19}
20
21; CHECK-LABEL: stp_float
22; CHECK: stp s0, s1, [x0]
23define 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
27  ret void
28}
29
30; CHECK-LABEL: stp_double
31; CHECK: stp d0, d1, [x0]
32define 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
36  ret void
37}
38
39; Test the load/store optimizer---combine ldurs into a ldp, if appropriate
40define void @stur_int(i32 %a, i32 %b, i32* nocapture %p) nounwind {
41; CHECK-LABEL: stur_int
42; CHECK: stp w{{[0-9]+}}, {{w[0-9]+}}, [x{{[0-9]+}}, #-8]
43; CHECK-NEXT: ret
44  %p1 = getelementptr inbounds i32, i32* %p, i32 -1
45  store i32 %a, i32* %p1, align 2
46  %p2 = getelementptr inbounds i32, i32* %p, i32 -2
47  store i32 %b, i32* %p2, align 2
48  ret void
49}
50
51define void @stur_long(i64 %a, i64 %b, i64* nocapture %p) nounwind {
52; CHECK-LABEL: stur_long
53; CHECK: stp x{{[0-9]+}}, {{x[0-9]+}}, [x{{[0-9]+}}, #-16]
54; CHECK-NEXT: ret
55  %p1 = getelementptr inbounds i64, i64* %p, i32 -1
56  store i64 %a, i64* %p1, align 2
57  %p2 = getelementptr inbounds i64, i64* %p, i32 -2
58  store i64 %b, i64* %p2, align 2
59  ret void
60}
61
62define void @stur_float(float %a, float %b, float* nocapture %p) nounwind {
63; CHECK-LABEL: stur_float
64; CHECK: stp s{{[0-9]+}}, {{s[0-9]+}}, [x{{[0-9]+}}, #-8]
65; CHECK-NEXT: ret
66  %p1 = getelementptr inbounds float, float* %p, i32 -1
67  store float %a, float* %p1, align 2
68  %p2 = getelementptr inbounds float, float* %p, i32 -2
69  store float %b, float* %p2, align 2
70  ret void
71}
72
73define void @stur_double(double %a, double %b, double* nocapture %p) nounwind {
74; CHECK-LABEL: stur_double
75; CHECK: stp d{{[0-9]+}}, {{d[0-9]+}}, [x{{[0-9]+}}, #-16]
76; CHECK-NEXT: ret
77  %p1 = getelementptr inbounds double, double* %p, i32 -1
78  store double %a, double* %p1, align 2
79  %p2 = getelementptr inbounds double, double* %p, i32 -2
80  store double %b, double* %p2, align 2
81  ret void
82}
83
84define void @splat_v4i32(i32 %v, i32 *%p) {
85entry:
86
87; CHECK-LABEL: splat_v4i32
88; CHECK-DAG: stp w0, w0, [x1]
89; CHECK-DAG: stp w0, w0, [x1, #8]
90; CHECK: ret
91
92  %p17 = insertelement <4 x i32> undef, i32 %v, i32 0
93  %p18 = insertelement <4 x i32> %p17, i32 %v, i32 1
94  %p19 = insertelement <4 x i32> %p18, i32 %v, i32 2
95  %p20 = insertelement <4 x i32> %p19, i32 %v, i32 3
96  %p21 = bitcast i32* %p to <4 x i32>*
97  store <4 x i32> %p20, <4 x i32>* %p21, align 4
98  ret void
99}
100
101; Read of %b to compute %tmp2 shouldn't prevent formation of stp
102; CHECK-LABEL: stp_int_rar_hazard
103; CHECK: stp w0, w1, [x2]
104; CHECK: ldr [[REG:w[0-9]+]], [x2, #8]
105; CHECK: add w0, [[REG]], w1
106; CHECK: ret
107define i32 @stp_int_rar_hazard(i32 %a, i32 %b, i32* nocapture %p) nounwind {
108  store i32 %a, i32* %p, align 4
109  %ld.ptr = getelementptr inbounds i32, i32* %p, i64 2
110  %tmp = load i32, i32* %ld.ptr, align 4
111  %tmp2 = add i32 %tmp, %b
112  %add.ptr = getelementptr inbounds i32, i32* %p, i64 1
113  store i32 %b, i32* %add.ptr, align 4
114  ret i32 %tmp2
115}
116
117; Read of %b to compute %tmp2 shouldn't prevent formation of stp
118; CHECK-LABEL: stp_int_rar_hazard_after
119; CHECK: ldr [[REG:w[0-9]+]], [x3, #4]
120; CHECK: add w0, [[REG]], w2
121; CHECK: stp w1, w2, [x3]
122; CHECK: ret
123define i32 @stp_int_rar_hazard_after(i32 %w0, i32 %a, i32 %b, i32* nocapture %p) nounwind {
124  store i32 %a, i32* %p, align 4
125  %ld.ptr = getelementptr inbounds i32, i32* %p, i64 1
126  %tmp = load i32, i32* %ld.ptr, align 4
127  %tmp2 = add i32 %tmp, %b
128  %add.ptr = getelementptr inbounds i32, i32* %p, i64 1
129  store i32 %b, i32* %add.ptr, align 4
130  ret i32 %tmp2
131}
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