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
89
90
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s --mtriple=wasm32-unknown-unknown | FileCheck %s
%alloca_cell = type ptr addrspace(1)
; We have a set of tests in which we set a local and then reload the
; local. If the load immediately follows the set, the DAG combiner will
; infer that the reloaded value is the same value that was set, which
; isn't what we want to test. To inhibit this optimization, we include
; an opaque call between the store and the load.
declare void @inhibit_store_to_load_forwarding()
define i32 @ir_local_i32(i32 %arg) {
; CHECK-LABEL: ir_local_i32:
; CHECK: .functype ir_local_i32 (i32) -> (i32)
; CHECK-NEXT: .local i32
; CHECK-NEXT: # %bb.0:
; CHECK-NEXT: local.get 0
; CHECK-NEXT: local.set 1
; CHECK-NEXT: call inhibit_store_to_load_forwarding
; CHECK-NEXT: local.get 1
; CHECK-NEXT: # fallthrough-return
%retval = alloca i32, addrspace(1)
store i32 %arg, %alloca_cell %retval
call void @inhibit_store_to_load_forwarding()
%reloaded = load i32, %alloca_cell %retval
ret i32 %reloaded
}
define i64 @ir_local_i64(i64 %arg) {
; CHECK-LABEL: ir_local_i64:
; CHECK: .functype ir_local_i64 (i64) -> (i64)
; CHECK-NEXT: .local i64
; CHECK-NEXT: # %bb.0:
; CHECK-NEXT: local.get 0
; CHECK-NEXT: local.set 1
; CHECK-NEXT: call inhibit_store_to_load_forwarding
; CHECK-NEXT: local.get 1
; CHECK-NEXT: # fallthrough-return
%retval = alloca i64, addrspace(1)
store i64 %arg, %alloca_cell %retval
call void @inhibit_store_to_load_forwarding()
%reloaded = load i64, %alloca_cell %retval
; See note in ir_local_i32.
ret i64 %reloaded
}
define float @ir_local_f32(float %arg) {
; CHECK-LABEL: ir_local_f32:
; CHECK: .functype ir_local_f32 (f32) -> (f32)
; CHECK-NEXT: .local f32
; CHECK-NEXT: # %bb.0:
; CHECK-NEXT: local.get 0
; CHECK-NEXT: local.set 1
; CHECK-NEXT: call inhibit_store_to_load_forwarding
; CHECK-NEXT: local.get 1
; CHECK-NEXT: # fallthrough-return
%retval = alloca float, addrspace(1)
store float %arg, %alloca_cell %retval
call void @inhibit_store_to_load_forwarding()
%reloaded = load float, %alloca_cell %retval
ret float %reloaded
}
define double @ir_local_f64(double %arg) {
; CHECK-LABEL: ir_local_f64:
; CHECK: .functype ir_local_f64 (f64) -> (f64)
; CHECK-NEXT: .local f64
; CHECK-NEXT: # %bb.0:
; CHECK-NEXT: local.get 0
; CHECK-NEXT: local.set 1
; CHECK-NEXT: call inhibit_store_to_load_forwarding
; CHECK-NEXT: local.get 1
; CHECK-NEXT: # fallthrough-return
%retval = alloca double, addrspace(1)
store double %arg, %alloca_cell %retval
call void @inhibit_store_to_load_forwarding()
%reloaded = load double, %alloca_cell %retval
ret double %reloaded
}
define void @ir_unreferenced_local() {
; CHECK-LABEL: ir_unreferenced_local:
; CHECK: .functype ir_unreferenced_local () -> ()
; CHECK-NEXT: .local i32
; CHECK-NEXT: # %bb.0:
; CHECK-NEXT: # fallthrough-return
%unused = alloca i32, addrspace(1)
ret void
}
|
