1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -o - | FileCheck %s
target triple = "x86_64-unknown-linux-gnu"
define void @merge_double(double* noalias nocapture %st, double* noalias nocapture readonly %ld) #0 {
; CHECK-LABEL: merge_double:
; CHECK: # %bb.0:
; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; CHECK-NEXT: movsd {{.*#+}} xmm1 = mem[0],zero
; CHECK-NEXT: movsd %xmm0, (%rdi)
; CHECK-NEXT: movsd %xmm1, 8(%rdi)
; CHECK-NEXT: movsd %xmm0, 16(%rdi)
; CHECK-NEXT: movsd %xmm1, 24(%rdi)
; CHECK-NEXT: retq
%ld_idx1 = getelementptr inbounds double, double* %ld, i64 1
%ld0 = load double, double* %ld, align 8, !tbaa !2
%ld1 = load double, double* %ld_idx1, align 8, !tbaa !2
%st_idx1 = getelementptr inbounds double, double* %st, i64 1
%st_idx2 = getelementptr inbounds double, double* %st, i64 2
%st_idx3 = getelementptr inbounds double, double* %st, i64 3
store double %ld0, double* %st, align 8, !tbaa !2
store double %ld1, double* %st_idx1, align 8, !tbaa !2
store double %ld0, double* %st_idx2, align 8, !tbaa !2
store double %ld1, double* %st_idx3, align 8, !tbaa !2
ret void
}
define void @merge_loadstore_int(i64* noalias nocapture readonly %p, i64* noalias nocapture %q) local_unnamed_addr #0 {
; CHECK-LABEL: merge_loadstore_int:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movq (%rdi), %rax
; CHECK-NEXT: movq 8(%rdi), %rcx
; CHECK-NEXT: movq %rax, (%rsi)
; CHECK-NEXT: movq %rcx, 8(%rsi)
; CHECK-NEXT: movq %rax, 16(%rsi)
; CHECK-NEXT: movq %rcx, 24(%rsi)
; CHECK-NEXT: retq
entry:
%0 = load i64, i64* %p, align 8, !tbaa !1
%arrayidx1 = getelementptr inbounds i64, i64* %p, i64 1
%1 = load i64, i64* %arrayidx1, align 8, !tbaa !1
store i64 %0, i64* %q, align 8, !tbaa !1
%arrayidx3 = getelementptr inbounds i64, i64* %q, i64 1
store i64 %1, i64* %arrayidx3, align 8, !tbaa !1
%arrayidx4 = getelementptr inbounds i64, i64* %q, i64 2
store i64 %0, i64* %arrayidx4, align 8, !tbaa !1
%arrayidx5 = getelementptr inbounds i64, i64* %q, i64 3
store i64 %1, i64* %arrayidx5, align 8, !tbaa !1
ret void
}
define i64 @merge_loadstore_int_with_extra_use(i64* noalias nocapture readonly %p, i64* noalias nocapture %q) local_unnamed_addr #0 {
; CHECK-LABEL: merge_loadstore_int_with_extra_use:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movq (%rdi), %rax
; CHECK-NEXT: movq 8(%rdi), %rcx
; CHECK-NEXT: movq %rax, (%rsi)
; CHECK-NEXT: movq %rcx, 8(%rsi)
; CHECK-NEXT: movq %rax, 16(%rsi)
; CHECK-NEXT: movq %rcx, 24(%rsi)
; CHECK-NEXT: retq
entry:
%0 = load i64, i64* %p, align 8, !tbaa !1
%arrayidx1 = getelementptr inbounds i64, i64* %p, i64 1
%1 = load i64, i64* %arrayidx1, align 8, !tbaa !1
store i64 %0, i64* %q, align 8, !tbaa !1
%arrayidx3 = getelementptr inbounds i64, i64* %q, i64 1
store i64 %1, i64* %arrayidx3, align 8, !tbaa !1
%arrayidx4 = getelementptr inbounds i64, i64* %q, i64 2
store i64 %0, i64* %arrayidx4, align 8, !tbaa !1
%arrayidx5 = getelementptr inbounds i64, i64* %q, i64 3
store i64 %1, i64* %arrayidx5, align 8, !tbaa !1
ret i64 %0
}
attributes #0 = { "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" }
!0 = !{!"clang version 5.0.0 (trunk 296467) (llvm/trunk 296476)"}
!1 = !{!2, !2, i64 0}
!2 = !{!"double", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
|