1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -verify-machineinstrs -mtriple=arm-unknown-linux < %s | FileCheck %s 3 4; Check CSR split can work properly for tests below. 5 6@a = common dso_local local_unnamed_addr global i32 0, align 4 7 8define dso_local signext i32 @test1(ptr %b) local_unnamed_addr { 9; CHECK-LABEL: test1: 10; CHECK: @ %bb.0: @ %entry 11; CHECK-NEXT: ldr r1, .LCPI0_0 12; CHECK-NEXT: ldr r1, [r1] 13; CHECK-NEXT: cmp r1, r0 14; CHECK-NEXT: movne pc, lr 15; CHECK-NEXT: .LBB0_1: @ %if.then 16; CHECK-NEXT: push {r4, lr} 17; CHECK-NEXT: mov r4, r0 18; CHECK-NEXT: bl callVoid 19; CHECK-NEXT: mov r0, r4 20; CHECK-NEXT: pop {r4, lr} 21; CHECK-NEXT: b callNonVoid 22; CHECK-NEXT: .p2align 2 23; CHECK-NEXT: @ %bb.2: 24; CHECK-NEXT: .LCPI0_0: 25; CHECK-NEXT: .long a 26entry: 27 %0 = load i32, ptr @a, align 4, !tbaa !2 28 %conv = sext i32 %0 to i64 29 %1 = inttoptr i64 %conv to ptr 30 %cmp = icmp eq ptr %1, %b 31 br i1 %cmp, label %if.then, label %if.end 32 33if.then: ; preds = %entry 34 %call = tail call signext i32 @callVoid() 35 %call2 = tail call signext i32 @callNonVoid(ptr %b) 36 br label %if.end 37 38if.end: ; preds = %if.then, %entry 39 %retval.0 = phi i32 [ %call2, %if.then ], [ undef, %entry ] 40 ret i32 %retval.0 41} 42 43declare signext i32 @callVoid(...) local_unnamed_addr 44 45declare signext i32 @callNonVoid(ptr) local_unnamed_addr 46 47define dso_local signext i32 @test2(ptr %p1) local_unnamed_addr { 48; CHECK-LABEL: test2: 49; CHECK: @ %bb.0: @ %entry 50; CHECK-NEXT: cmp r0, #0 51; CHECK-NEXT: beq .LBB1_2 52; CHECK-NEXT: @ %bb.1: @ %if.end 53; CHECK-NEXT: ldr r1, .LCPI1_0 54; CHECK-NEXT: ldr r1, [r1] 55; CHECK-NEXT: cmp r1, r0 56; CHECK-NEXT: beq .LBB1_3 57; CHECK-NEXT: .LBB1_2: @ %return 58; CHECK-NEXT: mov r0, #0 59; CHECK-NEXT: mov pc, lr 60; CHECK-NEXT: .LBB1_3: @ %if.then2 61; CHECK-NEXT: push {r4, lr} 62; CHECK-NEXT: mov r4, r0 63; CHECK-NEXT: bl callVoid 64; CHECK-NEXT: mov r0, r4 65; CHECK-NEXT: pop {r4, lr} 66; CHECK-NEXT: b callNonVoid 67; CHECK-NEXT: .p2align 2 68; CHECK-NEXT: @ %bb.4: 69; CHECK-NEXT: .LCPI1_0: 70; CHECK-NEXT: .long a 71entry: 72 %tobool = icmp eq ptr %p1, null 73 br i1 %tobool, label %return, label %if.end 74 75if.end: ; preds = %entry 76 %0 = load i32, ptr @a, align 4, !tbaa !2 77 %conv = sext i32 %0 to i64 78 %1 = inttoptr i64 %conv to ptr 79 %cmp = icmp eq ptr %1, %p1 80 br i1 %cmp, label %if.then2, label %return 81 82if.then2: ; preds = %if.end 83 %call = tail call signext i32 @callVoid() 84 %call3 = tail call signext i32 @callNonVoid(ptr nonnull %p1) 85 br label %return 86 87return: ; preds = %if.end, %entry, %if.then2 88 %retval.0 = phi i32 [ %call3, %if.then2 ], [ 0, %entry ], [ 0, %if.end ] 89 ret i32 %retval.0 90} 91 92 93define dso_local ptr @test3(ptr nocapture %p1, i8 zeroext %p2) local_unnamed_addr { 94; CHECK-LABEL: test3: 95; CHECK: @ %bb.0: @ %entry 96; CHECK-NEXT: push {r4, r5, r11, lr} 97; CHECK-NEXT: ldr r4, [r0] 98; CHECK-NEXT: cmp r4, #0 99; CHECK-NEXT: beq .LBB2_2 100; CHECK-NEXT: @ %bb.1: @ %land.rhs 101; CHECK-NEXT: mov r5, r0 102; CHECK-NEXT: mov r0, r4 103; CHECK-NEXT: bl bar 104; CHECK-NEXT: str r0, [r5] 105; CHECK-NEXT: .LBB2_2: @ %land.end 106; CHECK-NEXT: mov r0, r4 107; CHECK-NEXT: pop {r4, r5, r11, lr} 108; CHECK-NEXT: mov pc, lr 109entry: 110 %0 = load ptr, ptr %p1, align 8, !tbaa !6 111 %tobool = icmp eq ptr %0, null 112 br i1 %tobool, label %land.end, label %land.rhs 113 114land.rhs: ; preds = %entry 115 %call = tail call ptr @bar(ptr nonnull %0, i8 zeroext %p2) 116 store ptr %call, ptr %p1, align 8, !tbaa !6 117 br label %land.end 118 119land.end: ; preds = %entry, %land.rhs 120 ret ptr %0 121} 122 123declare ptr @bar(ptr, i8 zeroext) local_unnamed_addr 124 125 126!llvm.module.flags = !{!0} 127!llvm.ident = !{!1} 128 129!0 = !{i32 1, !"wchar_size", i32 4} 130!1 = !{!"clang version 10.0.0 (trunk 367381) (llvm/trunk 367388)"} 131!2 = !{!3, !3, i64 0} 132!3 = !{!"int", !4, i64 0} 133!4 = !{!"omnipotent char", !5, i64 0} 134!5 = !{!"Simple C/C++ TBAA"} 135!6 = !{!7, !7, i64 0} 136!7 = !{!"any pointer", !4, i64 0} 137