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