119 lines
4.8 KiB
LLVM
119 lines
4.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
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; RUN: llc -mtriple=thumbv7m-none-none-eabi < %s | FileCheck %s
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target datalayout = "e-m:o-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
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%struct.wibble = type { [30 x i8], i8, i32 }
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%struct.eggs = type { i32, [30 x i8], i8, i8, i8, [3 x i8] }
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@global = external global [3 x %struct.wibble], align 4
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@global.1 = external global [3 x %struct.wibble], align 4
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; Test case to make sure calling an outlined function does not clobber LR used
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; by a tail call in caller.
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define void @test(ptr nocapture noundef writeonly %arg, i32 noundef %arg1, i8 noundef zeroext %arg2) unnamed_addr #0 {
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; CHECK-LABEL: test:
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; CHECK: @ %bb.0: @ %bb
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; CHECK-NEXT: cmp r1, #2
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; CHECK-NEXT: beq .LBB0_3
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; CHECK-NEXT: @ %bb.1: @ %bb
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; CHECK-NEXT: cmp r1, #1
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; CHECK-NEXT: bne .LBB0_5
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; CHECK-NEXT: @ %bb.2: @ %bb4
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; CHECK-NEXT: movs r1, #1
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; CHECK-NEXT: strb.w r1, [r0, #36]
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; CHECK-NEXT: movs r1, #30
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; CHECK-NEXT: strb.w r1, [r0, #34]
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; CHECK-NEXT: add.w r1, r2, r2, lsl #3
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; CHECK-NEXT: ldr r2, .LCPI0_1
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; CHECK-NEXT: b .LBB0_4
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; CHECK-NEXT: .LBB0_3: @ %bb14
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; CHECK-NEXT: movs r1, #1
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; CHECK-NEXT: strb.w r1, [r0, #36]
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; CHECK-NEXT: movs r1, #30
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; CHECK-NEXT: strb.w r1, [r0, #34]
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; CHECK-NEXT: add.w r1, r2, r2, lsl #3
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; CHECK-NEXT: ldr r2, .LCPI0_0
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; CHECK-NEXT: .LBB0_4: @ %bb4
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; CHECK-NEXT: add.w r1, r2, r1, lsl #2
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; CHECK-NEXT: adds r0, #4
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; CHECK-NEXT: movs r2, #30
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; CHECK-NEXT: b __aeabi_memcpy
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; CHECK-NEXT: .LBB0_5: @ %bb24
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; CHECK-NEXT: .save {r7, lr}
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; CHECK-NEXT: push {r7, lr}
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; CHECK-NEXT: bl wombat
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; CHECK-NEXT: @APP
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; CHECK-NEXT: @NO_APP
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; CHECK-NEXT: pop {r7, pc}
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; CHECK-NEXT: .p2align 2
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; CHECK-NEXT: @ %bb.6:
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; CHECK-NEXT: .LCPI0_0:
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; CHECK-NEXT: .long global.1
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; CHECK-NEXT: .LCPI0_1:
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; CHECK-NEXT: .long global
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bb:
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%gep = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 4
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%zext = zext i8 %arg2 to i32
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switch i32 %arg1, label %bb24 [
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i32 1, label %bb4
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i32 2, label %bb14
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]
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bb4: ; preds = %bb3
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store i8 1, ptr %gep, align 4, !tbaa !6
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%gep5 = getelementptr inbounds [3 x %struct.wibble], ptr @global, i32 0, i32 %zext
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%gep6 = getelementptr inbounds [3 x %struct.wibble], ptr @global, i32 0, i32 %zext, i32 2
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%load = load i32, ptr %gep6, align 4, !tbaa !11
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%gep7 = getelementptr inbounds [3 x %struct.wibble], ptr @global, i32 0, i32 %zext, i32 1
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%load8 = load i8, ptr %gep7, align 2, !tbaa !13
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%gep9 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 3
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%gep10 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 2
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store i8 30, ptr %gep10, align 2, !tbaa !16
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%gep11 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 1
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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)
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br label %bb26
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bb14: ; preds = %bb12
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store i8 1, ptr %gep, align 4, !tbaa !6
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%gep16 = getelementptr inbounds [3 x %struct.wibble], ptr @global.1, i32 0, i32 %zext
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%gep17 = getelementptr inbounds [3 x %struct.wibble], ptr @global.1, i32 0, i32 %zext, i32 2
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%load18 = load i32, ptr %gep17, align 4, !tbaa !21
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%gep19 = getelementptr inbounds [3 x %struct.wibble], ptr @global.1, i32 0, i32 %zext, i32 1
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%load20 = load i8, ptr %gep19, align 2, !tbaa !23
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%gep21 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 3
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%gep22 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 2
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store i8 30, ptr %gep22, align 2, !tbaa !16
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%gep23 = getelementptr inbounds %struct.eggs, ptr %arg, i32 0, i32 1
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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)
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br label %bb26
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bb24: ; preds = %bb
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tail call void @wombat()
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tail call void asm sideeffect "", ""()
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br label %bb26
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bb26: ; preds = %bb24, %bb14, %bb12, %bb4, %bb3
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ret void
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}
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declare void @wombat()
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declare void @llvm.memcpy.p0.p0.i32(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i32, i1 immarg) #2
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attributes #0 = { minsize noimplicitfloat nounwind optsize }
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!6 = !{!7, !9, i64 36}
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!7 = !{!"", !8, i64 0, !9, i64 4, !9, i64 34, !9, i64 35, !9, i64 36, !9, i64 37}
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!8 = !{!"long", !9, i64 0}
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!9 = !{!"omnipotent char", !10, i64 0}
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!10 = !{!"Simple C/C++ TBAA"}
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!11 = !{!12, !8, i64 32}
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!12 = !{!"B", !9, i64 0, !9, i64 30, !8, i64 32}
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!13 = !{!12, !9, i64 30}
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!14 = !{!7, !8, i64 0}
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!15 = !{!7, !9, i64 35}
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!16 = !{!7, !9, i64 34}
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!21 = !{!22, !8, i64 32}
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!22 = !{!"A", !9, i64 0, !9, i64 30, !8, i64 32}
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!23 = !{!22, !9, i64 30}
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