1 ; RUN: llc < %s -mtriple=arm64-eabi -enable-misched=false -aarch64-enable-stp-suppress=false -verify-machineinstrs | FileCheck %s
3 ; The next set of tests makes sure we can combine the second instruction into
6 ; CHECK-LABEL: stp_int_aa
7 ; CHECK: stp w0, w1, [x2]
8 ; CHECK: ldr w0, [x2, #8]
10 define i32 @stp_int_aa(i32 %a, i32 %b, ptr nocapture %p) nounwind {
11 store i32 %a, ptr %p, align 4
12 %ld.ptr = getelementptr inbounds i32, ptr %p, i64 2
13 %tmp = load i32, ptr %ld.ptr, align 4
14 %add.ptr = getelementptr inbounds i32, ptr %p, i64 1
15 store i32 %b, ptr %add.ptr, align 4
19 ; CHECK-LABEL: stp_long_aa
20 ; CHECK: stp x0, x1, [x2]
21 ; CHECK: ldr x0, [x2, #16]
23 define i64 @stp_long_aa(i64 %a, i64 %b, ptr nocapture %p) nounwind {
24 store i64 %a, ptr %p, align 8
25 %ld.ptr = getelementptr inbounds i64, ptr %p, i64 2
26 %tmp = load i64, ptr %ld.ptr, align 4
27 %add.ptr = getelementptr inbounds i64, ptr %p, i64 1
28 store i64 %b, ptr %add.ptr, align 8
32 ; CHECK-LABEL: stp_float_aa
33 ; CHECK: stp s0, s1, [x0]
34 ; CHECK: ldr s0, [x0, #8]
36 define float @stp_float_aa(float %a, float %b, ptr nocapture %p) nounwind {
37 store float %a, ptr %p, align 4
38 %ld.ptr = getelementptr inbounds float, ptr %p, i64 2
39 %tmp = load float, ptr %ld.ptr, align 4
40 %add.ptr = getelementptr inbounds float, ptr %p, i64 1
41 store float %b, ptr %add.ptr, align 4
45 ; CHECK-LABEL: stp_double_aa
46 ; CHECK: stp d0, d1, [x0]
47 ; CHECK: ldr d0, [x0, #16]
49 define double @stp_double_aa(double %a, double %b, ptr nocapture %p) nounwind {
50 store double %a, ptr %p, align 8
51 %ld.ptr = getelementptr inbounds double, ptr %p, i64 2
52 %tmp = load double, ptr %ld.ptr, align 4
53 %add.ptr = getelementptr inbounds double, ptr %p, i64 1
54 store double %b, ptr %add.ptr, align 8
58 ; The next set of tests makes sure we can combine the first instruction into
61 ; CHECK-LABEL: stp_int_aa_after
62 ; CHECK: ldr w0, [x3, #4]
63 ; CHECK: stp w1, w2, [x3]
65 define i32 @stp_int_aa_after(i32 %w0, i32 %a, i32 %b, ptr nocapture %p) nounwind {
66 store i32 %a, ptr %p, align 4
67 %ld.ptr = getelementptr inbounds i32, ptr %p, i64 1
68 %tmp = load i32, ptr %ld.ptr, align 4
69 %add.ptr = getelementptr inbounds i32, ptr %p, i64 1
70 store i32 %b, ptr %add.ptr, align 4
74 ; CHECK-LABEL: stp_long_aa_after
75 ; CHECK: ldr x0, [x3, #8]
76 ; CHECK: stp x1, x2, [x3]
78 define i64 @stp_long_aa_after(i64 %x0, i64 %a, i64 %b, ptr nocapture %p) nounwind {
79 store i64 %a, ptr %p, align 8
80 %ld.ptr = getelementptr inbounds i64, ptr %p, i64 1
81 %tmp = load i64, ptr %ld.ptr, align 4
82 %add.ptr = getelementptr inbounds i64, ptr %p, i64 1
83 store i64 %b, ptr %add.ptr, align 8
87 ; CHECK-LABEL: stp_float_aa_after
88 ; CHECK: ldr s0, [x0, #4]
89 ; CHECK: stp s1, s2, [x0]
91 define float @stp_float_aa_after(float %s0, float %a, float %b, ptr nocapture %p) nounwind {
92 store float %a, ptr %p, align 4
93 %ld.ptr = getelementptr inbounds float, ptr %p, i64 1
94 %tmp = load float, ptr %ld.ptr, align 4
95 %add.ptr = getelementptr inbounds float, ptr %p, i64 1
96 store float %b, ptr %add.ptr, align 4
100 ; CHECK-LABEL: stp_double_aa_after
101 ; CHECK: ldr d0, [x0, #8]
102 ; CHECK: stp d1, d2, [x0]
104 define double @stp_double_aa_after(double %d0, double %a, double %b, ptr nocapture %p) nounwind {
105 store double %a, ptr %p, align 8
106 %ld.ptr = getelementptr inbounds double, ptr %p, i64 1
107 %tmp = load double, ptr %ld.ptr, align 4
108 %add.ptr = getelementptr inbounds double, ptr %p, i64 1
109 store double %b, ptr %add.ptr, align 8
113 ; Check that the stores %c and %d are paired after the fadd instruction,
114 ; and then the stores %a and %d are paired after proving that they do not
115 ; depend on the (%c, %d) pair.
118 ; CHECK: stp q0, q1, [x{{[0-9]+}}]
120 ; CHECK: stp q2, q0, [x{{[0-9]+}}, #32]
121 define void @st1(<4 x float> %a, <4 x float> %b, <4 x float> %c, <4 x float> %d, ptr %base, i64 %index) {
123 %a0 = getelementptr inbounds float, ptr %base, i64 %index
124 %b0 = getelementptr float, ptr %a0, i64 4
125 %c0 = getelementptr float, ptr %a0, i64 8
126 %d0 = getelementptr float, ptr %a0, i64 12
129 store <4 x float> %c, ptr %c0, align 4
130 store <4 x float> %a, ptr %a0, align 4
132 ; This fadd forces the compiler to pair %c and %e after fadd, and leave the
133 ; stores %a and %b separated by a stp. The dependence analysis needs then to
134 ; prove that it is safe to move %b past the stp to be paired with %a.
135 %e = fadd fast <4 x float> %d, %a
137 store <4 x float> %e, ptr %d0, align 4
138 store <4 x float> %b, ptr %b0, align 4