1 ; RUN: llc < %s -mtriple=armv7-apple-ios6.0 | FileCheck %s 2 ; RUN: llc < %s -mtriple=thumbv7-apple-ios6.0 | FileCheck %s -check-prefix=THUMB 3 4 ; rdar://9877866 5 %struct.SmallStruct = type { i32, [8 x i32], [37 x i8] } 6 %struct.LargeStruct = type { i32, [1001 x i8], [300 x i32] } 7 8 define i32 @f() nounwind ssp { 9 entry: 10 ; CHECK-LABEL: f: 11 ; CHECK: ldr 12 ; CHECK: str 13 ; CHECK-NOT:bne 14 ; THUMB-LABEL: f: 15 ; THUMB: ldr 16 ; THUMB: str 17 ; THUMB-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 24 define i32 @g() nounwind ssp { 25 entry: 26 ; CHECK-LABEL: g: 27 ; CHECK: ldr 28 ; CHECK: sub 29 ; CHECK: str 30 ; CHECK: bne 31 ; THUMB-LABEL: g: 32 ; THUMB: ldr 33 ; THUMB: sub 34 ; THUMB: str 35 ; THUMB: bne 36 %st = alloca %struct.LargeStruct, align 4 37 %call = call i32 @e2(%struct.LargeStruct* byval %st) 38 ret i32 0 39 } 40 41 ; Generate a loop using NEON instructions 42 define i32 @h() nounwind ssp { 43 entry: 44 ; CHECK-LABEL: h: 45 ; CHECK: vld1 46 ; CHECK: sub 47 ; CHECK: vst1 48 ; CHECK: bne 49 ; THUMB-LABEL: h: 50 ; THUMB: vld1 51 ; THUMB: sub 52 ; THUMB: vst1 53 ; THUMB: bne 54 %st = alloca %struct.LargeStruct, align 16 55 %call = call i32 @e3(%struct.LargeStruct* byval align 16 %st) 56 ret i32 0 57 } 58 59 declare i32 @e1(%struct.SmallStruct* nocapture byval %in) nounwind 60 declare i32 @e2(%struct.LargeStruct* nocapture byval %in) nounwind 61 declare i32 @e3(%struct.LargeStruct* nocapture byval align 16 %in) nounwind 62 63 ; rdar://12442472 64 ; We can't do tail call since address of s is passed to the callee and part of 65 ; s is in caller's local frame. 66 define void @f3(%struct.SmallStruct* nocapture byval %s) nounwind optsize { 67 ; CHECK-LABEL: f3 68 ; CHECK: bl _consumestruct 69 ; THUMB-LABEL: f3 70 ; THUMB: blx _consumestruct 71 entry: 72 %0 = bitcast %struct.SmallStruct* %s to i8* 73 tail call void @consumestruct(i8* %0, i32 80) optsize 74 ret void 75 } 76 77 define void @f4(%struct.SmallStruct* nocapture byval %s) nounwind optsize { 78 ; CHECK-LABEL: f4 79 ; CHECK: bl _consumestruct 80 ; THUMB-LABEL: f4 81 ; THUMB: blx _consumestruct 82 entry: 83 %addr = getelementptr inbounds %struct.SmallStruct* %s, i32 0, i32 0 84 %0 = bitcast i32* %addr to i8* 85 tail call void @consumestruct(i8* %0, i32 80) optsize 86 ret void 87 } 88 89 ; We can do tail call here since s is in the incoming argument area. 90 define void @f5(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize { 91 ; CHECK-LABEL: f5 92 ; CHECK: b _consumestruct 93 ; THUMB-LABEL: f5 94 ; THUMB: b.w _consumestruct 95 entry: 96 %0 = bitcast %struct.SmallStruct* %s to i8* 97 tail call void @consumestruct(i8* %0, i32 80) optsize 98 ret void 99 } 100 101 define void @f6(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize { 102 ; CHECK-LABEL: f6 103 ; CHECK: b _consumestruct 104 ; THUMB-LABEL: f6 105 ; THUMB: b.w _consumestruct 106 entry: 107 %addr = getelementptr inbounds %struct.SmallStruct* %s, i32 0, i32 0 108 %0 = bitcast i32* %addr to i8* 109 tail call void @consumestruct(i8* %0, i32 80) optsize 110 ret void 111 } 112 113 declare void @consumestruct(i8* nocapture %structp, i32 %structsize) nounwind 114 115 ; PR17309 116 %struct.I.8 = type { [10 x i32], [3 x i8] } 117 118 declare void @use_I(%struct.I.8* byval) 119 define void @test_I_16() { 120 ; CHECK-LABEL: test_I_16 121 ; CHECK: ldrb 122 ; CHECK: strb 123 ; THUMB-LABEL: test_I_16 124 ; THUMB: ldrb 125 ; THUMB: strb 126 entry: 127 call void @use_I(%struct.I.8* byval align 16 undef) 128 ret void 129 } 130
