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; RUN: opt -S -loop-rotate < %s | FileCheck %s
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
define i32 @tak(i32 %x, i32 %y, i32 %z) nounwind ssp {
; CHECK-LABEL: define i32 @tak(
; CHECK: entry
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %x
entry:
br label %tailrecurse
tailrecurse: ; preds = %if.then, %entry
%x.tr = phi i32 [ %x, %entry ], [ %call, %if.then ]
%y.tr = phi i32 [ %y, %entry ], [ %call9, %if.then ]
%z.tr = phi i32 [ %z, %entry ], [ %call14, %if.then ]
tail call void @llvm.dbg.value(metadata i32 %x.tr, i64 0, metadata !6, metadata !{}), !dbg !7
tail call void @llvm.dbg.value(metadata i32 %y.tr, i64 0, metadata !8, metadata !{}), !dbg !9
tail call void @llvm.dbg.value(metadata i32 %z.tr, i64 0, metadata !10, metadata !{}), !dbg !11
%cmp = icmp slt i32 %y.tr, %x.tr, !dbg !12
br i1 %cmp, label %if.then, label %if.end, !dbg !12
if.then: ; preds = %tailrecurse
%sub = sub nsw i32 %x.tr, 1, !dbg !14
%call = tail call i32 @tak(i32 %sub, i32 %y.tr, i32 %z.tr), !dbg !14
%sub6 = sub nsw i32 %y.tr, 1, !dbg !14
%call9 = tail call i32 @tak(i32 %sub6, i32 %z.tr, i32 %x.tr), !dbg !14
%sub11 = sub nsw i32 %z.tr, 1, !dbg !14
%call14 = tail call i32 @tak(i32 %sub11, i32 %x.tr, i32 %y.tr), !dbg !14
br label %tailrecurse
if.end: ; preds = %tailrecurse
br label %return, !dbg !16
return: ; preds = %if.end
ret i32 %z.tr, !dbg !17
}
@channelColumns = external global i64
@horzPlane = external global i8*, align 8
define void @FindFreeHorzSeg(i64 %startCol, i64 %row, i64* %rowStart) {
; Ensure that the loop increment basic block is rotated into the tail of the
; body, even though it contains a debug intrinsic call.
; CHECK-LABEL: define void @FindFreeHorzSeg(
; CHECK: %dec = add
; CHECK-NEXT: tail call void @llvm.dbg.value
; CHECK: %cmp = icmp
; CHECK: br i1 %cmp
; CHECK: phi i64 [ %{{[^,]*}}, %{{[^,]*}} ]
; CHECK-NEXT: br label %for.end
entry:
br label %for.cond
for.cond:
%i.0 = phi i64 [ %startCol, %entry ], [ %dec, %for.inc ]
%cmp = icmp eq i64 %i.0, 0
br i1 %cmp, label %for.end, label %for.body
for.body:
%0 = load i64* @channelColumns, align 8
%mul = mul i64 %0, %row
%add = add i64 %mul, %i.0
%1 = load i8** @horzPlane, align 8
%arrayidx = getelementptr inbounds i8* %1, i64 %add
%2 = load i8* %arrayidx, align 1
%tobool = icmp eq i8 %2, 0
br i1 %tobool, label %for.inc, label %for.end
for.inc:
%dec = add i64 %i.0, -1
tail call void @llvm.dbg.value(metadata i64 %dec, i64 0, metadata !{!"undef"}, metadata !{})
br label %for.cond
for.end:
%add1 = add i64 %i.0, 1
store i64 %add1, i64* %rowStart, align 8
ret void
}
!llvm.module.flags = !{!20}
!llvm.dbg.sp = !{!0}
!0 = !{!"0x2e\00tak\00tak\00\0032\000\001\000\006\00256\000\000", !18, !1, !3, null, i32 (i32, i32, i32)* @tak, null, null, null} ; [ DW_TAG_subprogram ] [line 32] [def] [scope 0] [tak]
!1 = !{!"0x29", !18} ; [ DW_TAG_file_type ]
!2 = !{!"0x11\0012\00clang version 2.9 (trunk 125492)\001\00\000\00\000", !18, !19, !19, null, null, null} ; [ DW_TAG_compile_unit ]
!3 = !{!"0x15\00\000\000\000\000\000\000", !18, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!4 = !{!5}
!5 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !2} ; [ DW_TAG_base_type ]
!6 = !{!"0x101\00x\0032\000", !0, !1, !5} ; [ DW_TAG_arg_variable ]
!7 = !MDLocation(line: 32, column: 13, scope: !0)
!8 = !{!"0x101\00y\0032\000", !0, !1, !5} ; [ DW_TAG_arg_variable ]
!9 = !MDLocation(line: 32, column: 20, scope: !0)
!10 = !{!"0x101\00z\0032\000", !0, !1, !5} ; [ DW_TAG_arg_variable ]
!11 = !MDLocation(line: 32, column: 27, scope: !0)
!12 = !MDLocation(line: 33, column: 3, scope: !13)
!13 = !{!"0xb\0032\0030\006", !18, !0} ; [ DW_TAG_lexical_block ]
!14 = !MDLocation(line: 34, column: 5, scope: !15)
!15 = !{!"0xb\0033\0014\007", !18, !13} ; [ DW_TAG_lexical_block ]
!16 = !MDLocation(line: 36, column: 3, scope: !13)
!17 = !MDLocation(line: 37, column: 1, scope: !13)
!18 = !{!"/Volumes/Lalgate/cj/llvm/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame/recursive.c", !"/Volumes/Lalgate/cj/D/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame"}
!19 = !{i32 0}
!20 = !{i32 1, !"Debug Info Version", i32 2}
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