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1; RUN: llc < %s -mtriple=armv7-apple-ios6.0 | FileCheck %s
2; RUN: llc < %s -mtriple=thumbv7-apple-ios6.0 | FileCheck %s
3; RUN: llc < %s -mtriple=armv7-unknown-nacl-gnueabi | FileCheck %s -check-prefix=NACL
4; RUN: llc < %s -mtriple=armv5-none-linux-gnueabi | FileCheck %s -check-prefix=NOMOVT
5
6; NOMOVT-NOT: movt
7
8; rdar://9877866
9%struct.SmallStruct = type { i32, [8 x i32], [37 x i8] }
10%struct.LargeStruct = type { i32, [1001 x i8], [300 x i32] }
11
12define i32 @f() nounwind ssp {
13entry:
14; CHECK-LABEL: f:
15; CHECK: ldr
16; CHECK: str
17; CHECK-NOT:bne
18  %st = alloca %struct.SmallStruct, align 4
19  %call = call i32 @e1(%struct.SmallStruct* byval %st)
20  ret i32 0
21}
22
23; Generate a loop for large struct byval
24define i32 @g() nounwind ssp {
25entry:
26; CHECK-LABEL: g:
27; CHECK: ldr
28; CHECK: sub
29; CHECK: str
30; CHECK: bne
31; NACL-LABEL: g:
32; Ensure that use movw instead of constpool for the loop trip count. But don't
33; match the __stack_chk_guard movw
34; NACL: movw r{{[1-9]}}, #
35; NACL: ldr
36; NACL: sub
37; NACL: str
38; NACL: bne
39  %st = alloca %struct.LargeStruct, align 4
40  %call = call i32 @e2(%struct.LargeStruct* byval %st)
41  ret i32 0
42}
43
44; Generate a loop using NEON instructions
45define i32 @h() nounwind ssp {
46entry:
47; CHECK-LABEL: h:
48; CHECK: vld1
49; CHECK: sub
50; CHECK: vst1
51; CHECK: bne
52; NACL: movw r{{[1-9]}}, #
53; NACL: vld1
54; NACL: sub
55; NACL: vst1
56; NACL: bne
57  %st = alloca %struct.LargeStruct, align 16
58  %call = call i32 @e3(%struct.LargeStruct* byval align 16 %st)
59  ret i32 0
60}
61
62declare i32 @e1(%struct.SmallStruct* nocapture byval %in) nounwind
63declare i32 @e2(%struct.LargeStruct* nocapture byval %in) nounwind
64declare i32 @e3(%struct.LargeStruct* nocapture byval align 16 %in) nounwind
65
66; rdar://12442472
67; We can't do tail call since address of s is passed to the callee and part of
68; s is in caller's local frame.
69define void @f3(%struct.SmallStruct* nocapture byval %s) nounwind optsize {
70; CHECK-LABEL: f3
71; CHECK: bl _consumestruct
72entry:
73  %0 = bitcast %struct.SmallStruct* %s to i8*
74  tail call void @consumestruct(i8* %0, i32 80) optsize
75  ret void
76}
77
78define void @f4(%struct.SmallStruct* nocapture byval %s) nounwind optsize {
79; CHECK-LABEL: f4
80; CHECK: bl _consumestruct
81entry:
82  %addr = getelementptr inbounds %struct.SmallStruct, %struct.SmallStruct* %s, i32 0, i32 0
83  %0 = bitcast i32* %addr to i8*
84  tail call void @consumestruct(i8* %0, i32 80) optsize
85  ret void
86}
87
88; We can do tail call here since s is in the incoming argument area.
89define void @f5(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize {
90; CHECK-LABEL: f5
91; CHECK: b{{(\.w)?}} _consumestruct
92entry:
93  %0 = bitcast %struct.SmallStruct* %s to i8*
94  tail call void @consumestruct(i8* %0, i32 80) optsize
95  ret void
96}
97
98define void @f6(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize {
99; CHECK-LABEL: f6
100; CHECK: b{{(\.w)?}} _consumestruct
101entry:
102  %addr = getelementptr inbounds %struct.SmallStruct, %struct.SmallStruct* %s, i32 0, i32 0
103  %0 = bitcast i32* %addr to i8*
104  tail call void @consumestruct(i8* %0, i32 80) optsize
105  ret void
106}
107
108declare void @consumestruct(i8* nocapture %structp, i32 %structsize) nounwind
109
110; PR17309
111%struct.I.8 = type { [10 x i32], [3 x i8] }
112
113declare void @use_I(%struct.I.8* byval)
114define void @test_I_16() {
115; CHECK-LABEL: test_I_16
116; CHECK: ldrb
117; CHECK: strb
118entry:
119  call void @use_I(%struct.I.8* byval align 16 undef)
120  ret void
121}
122