1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 2; RUN: llc -mtriple=thumbv7m-none-none-eabi < %s | FileCheck %s 3 4target datalayout = "e-m:o-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" 5 6%struct.wibble = type { [30 x i8], i8, i32 } 7%struct.eggs = type { i32, [30 x i8], i8, i8, i8, [3 x i8] } 8 9@global = external global [3 x %struct.wibble], align 4 10@global.1 = external global [3 x %struct.wibble], align 4 11 12; Test case to make sure calling an outlined function does not clobber LR used 13; by a tail call in caller. 14define void @test(ptr nocapture noundef writeonly %arg, i32 noundef %arg1, i8 noundef zeroext %arg2) unnamed_addr #0 { 15; CHECK-LABEL: test: 16; CHECK: @ %bb.0: @ %bb 17; CHECK-NEXT: cmp r1, #2 18; CHECK-NEXT: beq .LBB0_3 19; CHECK-NEXT: @ %bb.1: @ %bb 20; CHECK-NEXT: cmp r1, #1 21; CHECK-NEXT: bne .LBB0_5 22; CHECK-NEXT: @ %bb.2: @ %bb4 23; CHECK-NEXT: movs r1, #1 24; CHECK-NEXT: strb.w r1, [r0, #36] 25; CHECK-NEXT: movs r1, #30 26; CHECK-NEXT: strb.w r1, [r0, #34] 27; CHECK-NEXT: add.w r1, r2, r2, lsl #3 28; CHECK-NEXT: ldr r2, .LCPI0_1 29; CHECK-NEXT: b .LBB0_4 30; CHECK-NEXT: .LBB0_3: @ %bb14 31; CHECK-NEXT: movs r1, #1 32; CHECK-NEXT: strb.w r1, [r0, #36] 33; CHECK-NEXT: movs r1, #30 34; CHECK-NEXT: strb.w r1, [r0, #34] 35; CHECK-NEXT: add.w r1, r2, r2, lsl #3 36; CHECK-NEXT: ldr r2, .LCPI0_0 37; CHECK-NEXT: .LBB0_4: @ %bb4 38; CHECK-NEXT: add.w r1, r2, r1, lsl #2 39; CHECK-NEXT: adds r0, #4 40; CHECK-NEXT: movs r2, #30 41; CHECK-NEXT: b __aeabi_memcpy 42; CHECK-NEXT: .LBB0_5: @ %bb24 43; CHECK-NEXT: .save {r7, lr} 44; CHECK-NEXT: push {r7, lr} 45; CHECK-NEXT: bl wombat 46; CHECK-NEXT: @APP 47; CHECK-NEXT: @NO_APP 48; CHECK-NEXT: pop {r7, pc} 49; CHECK-NEXT: .p2align 2 50; CHECK-NEXT: @ %bb.6: 51; CHECK-NEXT: .LCPI0_0: 52; CHECK-NEXT: .long global.1 53; CHECK-NEXT: .LCPI0_1: 54; CHECK-NEXT: .long global 55bb: 56 %gep = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 4 57 %zext = zext i8 %arg2 to i32 58 switch i32 %arg1, label %bb24 [ 59 i32 1, label %bb4 60 i32 2, label %bb14 61 ] 62 63bb4: ; preds = %bb3 64 store i8 1, ptr %gep, align 4, !tbaa !6 65 %gep5 = getelementptr inbounds [3 x %struct.wibble], ptr @global, i32 0, i32 %zext 66 %gep6 = getelementptr inbounds [3 x %struct.wibble], ptr @global, i32 0, i32 %zext, i32 2 67 %load = load i32, ptr %gep6, align 4, !tbaa !11 68 %gep7 = getelementptr inbounds [3 x %struct.wibble], ptr @global, i32 0, i32 %zext, i32 1 69 %load8 = load i8, ptr %gep7, align 2, !tbaa !13 70 %gep9 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 3 71 %gep10 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 2 72 store i8 30, ptr %gep10, align 2, !tbaa !16 73 %gep11 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 1 74 tail call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(30) %gep11, ptr noundef nonnull align 4 dereferenceable(30) %gep5, i32 30, i1 false) 75 br label %bb26 76 77bb14: ; preds = %bb12 78 store i8 1, ptr %gep, align 4, !tbaa !6 79 %gep16 = getelementptr inbounds [3 x %struct.wibble], ptr @global.1, i32 0, i32 %zext 80 %gep17 = getelementptr inbounds [3 x %struct.wibble], ptr @global.1, i32 0, i32 %zext, i32 2 81 %load18 = load i32, ptr %gep17, align 4, !tbaa !21 82 %gep19 = getelementptr inbounds [3 x %struct.wibble], ptr @global.1, i32 0, i32 %zext, i32 1 83 %load20 = load i8, ptr %gep19, align 2, !tbaa !23 84 %gep21 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 3 85 %gep22 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 2 86 store i8 30, ptr %gep22, align 2, !tbaa !16 87 %gep23 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 1 88 tail call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(30) %gep23, ptr noundef nonnull align 4 dereferenceable(30) %gep16, i32 30, i1 false) 89 br label %bb26 90 91bb24: ; preds = %bb 92 tail call void @wombat() 93 tail call void asm sideeffect "", ""() 94 br label %bb26 95 96bb26: ; preds = %bb24, %bb14, %bb12, %bb4, %bb3 97 ret void 98} 99 100declare void @wombat() 101 102declare void @llvm.memcpy.p0.p0.i32(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i32, i1 immarg) #2 103 104attributes #0 = { minsize noimplicitfloat nounwind optsize } 105 106!6 = !{!7, !9, i64 36} 107!7 = !{!"", !8, i64 0, !9, i64 4, !9, i64 34, !9, i64 35, !9, i64 36, !9, i64 37} 108!8 = !{!"long", !9, i64 0} 109!9 = !{!"omnipotent char", !10, i64 0} 110!10 = !{!"Simple C/C++ TBAA"} 111!11 = !{!12, !8, i64 32} 112!12 = !{!"B", !9, i64 0, !9, i64 30, !8, i64 32} 113!13 = !{!12, !9, i64 30} 114!14 = !{!7, !8, i64 0} 115!15 = !{!7, !9, i64 35} 116!16 = !{!7, !9, i64 34} 117!21 = !{!22, !8, i64 32} 118!22 = !{!"A", !9, i64 0, !9, i64 30, !8, i64 32} 119!23 = !{!22, !9, i64 30} 120