1 ; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck %s 2 3 @.str2 = private unnamed_addr constant [7 x i8] c"memchr\00", align 1 4 @.str3 = private unnamed_addr constant [11 x i8] c"bsd_memchr\00", align 1 5 @str4 = private unnamed_addr constant [5 x i8] c"Bug!\00" 6 7 ; Make sure at end of do.cond.i, we jump to do.body.i first to have a tighter 8 ; inner loop. 9 define i32 @test_branches_order() uwtable ssp { 10 ; CHECK-LABEL: test_branches_order: 11 ; CHECK: [[L0:LBB0_[0-9]+]]: ## %do.body.i 12 ; CHECK: je 13 ; CHECK: %do.cond.i 14 ; CHECK: jne [[L0]] 15 ; CHECK: jmp 16 ; CHECK: %exit 17 entry: 18 %strs = alloca [1000 x [1001 x i8]], align 16 19 br label %for.cond 20 21 for.cond: 22 %j.0 = phi i32 [ 0, %entry ], [ %inc10, %for.inc9 ] 23 %cmp = icmp slt i32 %j.0, 1000 24 br i1 %cmp, label %for.cond1, label %for.end11 25 26 for.cond1: 27 %indvars.iv50 = phi i64 [ %indvars.iv.next51, %for.body3 ], [ 0, %for.cond ] 28 %0 = trunc i64 %indvars.iv50 to i32 29 %cmp2 = icmp slt i32 %0, 1000 30 br i1 %cmp2, label %for.body3, label %for.inc9 31 32 for.body3: 33 %arraydecay = getelementptr inbounds [1000 x [1001 x i8]]* %strs, i64 0, i64 %indvars.iv50, i64 0 34 %call = call i8* @memchr(i8* %arraydecay, i32 120, i64 1000) 35 %add.ptr = getelementptr inbounds [1000 x [1001 x i8]]* %strs, i64 0, i64 %indvars.iv50, i64 %indvars.iv50 36 %cmp7 = icmp eq i8* %call, %add.ptr 37 %indvars.iv.next51 = add i64 %indvars.iv50, 1 38 br i1 %cmp7, label %for.cond1, label %if.then 39 40 if.then: 41 %puts = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @str4, i64 0, i64 0)) 42 call void @exit(i32 1) noreturn 43 unreachable 44 45 for.inc9: 46 %inc10 = add nsw i32 %j.0, 1 47 br label %for.cond 48 49 for.end11: 50 %puts42 = call i32 @puts(i8* getelementptr inbounds ([7 x i8]* @.str2, i64 0, i64 0)) 51 br label %for.cond14 52 53 for.cond14: 54 %j13.0 = phi i32 [ 0, %for.end11 ], [ %inc39, %for.inc38 ] 55 %cmp15 = icmp slt i32 %j13.0, 1000 56 br i1 %cmp15, label %for.cond18, label %for.end40 57 58 for.cond18: 59 %indvars.iv = phi i64 [ %indvars.iv.next, %exit ], [ 0, %for.cond14 ] 60 %1 = trunc i64 %indvars.iv to i32 61 %cmp19 = icmp slt i32 %1, 1000 62 br i1 %cmp19, label %for.body20, label %for.inc38 63 64 for.body20: 65 %arraydecay24 = getelementptr inbounds [1000 x [1001 x i8]]* %strs, i64 0, i64 %indvars.iv, i64 0 66 br label %do.body.i 67 68 do.body.i: 69 %n.addr.0.i = phi i64 [ %dec.i, %do.cond.i ], [ 1000, %for.body20 ] 70 %p.0.i = phi i8* [ %incdec.ptr.i, %do.cond.i ], [ %arraydecay24, %for.body20 ] 71 %2 = load i8* %p.0.i, align 1 72 %cmp3.i = icmp eq i8 %2, 120 73 br i1 %cmp3.i, label %exit, label %do.cond.i 74 75 do.cond.i: 76 %incdec.ptr.i = getelementptr inbounds i8* %p.0.i, i64 1 77 %dec.i = add i64 %n.addr.0.i, -1 78 %cmp5.i = icmp eq i64 %dec.i, 0 79 br i1 %cmp5.i, label %if.then32, label %do.body.i 80 81 exit: 82 %add.ptr30 = getelementptr inbounds [1000 x [1001 x i8]]* %strs, i64 0, i64 %indvars.iv, i64 %indvars.iv 83 %cmp31 = icmp eq i8* %p.0.i, %add.ptr30 84 %indvars.iv.next = add i64 %indvars.iv, 1 85 br i1 %cmp31, label %for.cond18, label %if.then32 86 87 if.then32: 88 %puts43 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @str4, i64 0, i64 0)) 89 call void @exit(i32 1) noreturn 90 unreachable 91 92 for.inc38: 93 %inc39 = add nsw i32 %j13.0, 1 94 br label %for.cond14 95 96 for.end40: 97 %puts44 = call i32 @puts(i8* getelementptr inbounds ([11 x i8]* @.str3, i64 0, i64 0)) 98 ret i32 0 99 } 100 101 declare i8* @memchr(i8*, i32, i64) nounwind readonly 102 declare void @exit(i32) noreturn 103 declare i32 @puts(i8* nocapture) nounwind 104 105
