2014-03-08 02:45:53 +00:00
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; RUN: llc < %s -filetype=obj | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; RUN: llc < %s -filetype=obj -regalloc=basic | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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2011-01-24 19:24:37 +00:00
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-apple-darwin10.0.0"
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; Check debug info for variable z_s
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2014-03-08 02:45:53 +00:00
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_TAG_variable
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; CHECK: DW_TAG_variable
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2014-06-13 22:18:23 +00:00
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; CHECK-NEXT: DW_AT_location
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2014-03-08 02:45:53 +00:00
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; CHECK-NEXT: DW_AT_name {{.*}} "z_s"
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2014-03-14 23:08:21 +00:00
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; CHECK-NEXT: DW_AT_decl_file
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; CHECK-NEXT: DW_AT_decl_line
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; CHECK-NEXT: DW_AT_type{{.*}}{[[TYPE:.*]]}
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; CHECK: [[TYPE]]:
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; CHECK-NEXT: DW_AT_name {{.*}} "int"
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2011-01-24 19:24:37 +00:00
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@.str1 = private unnamed_addr constant [14 x i8] c"m=%u, z_s=%d\0A\00"
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@str = internal constant [21 x i8] c"Failing test vector:\00"
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define i64 @gcd(i64 %a, i64 %b) nounwind readnone optsize noinline ssp {
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entry:
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2014-10-03 20:01:09 +00:00
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tail call void @llvm.dbg.value(metadata !{i64 %a}, i64 0, metadata !10, metadata !{metadata !"0x102"}), !dbg !18
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tail call void @llvm.dbg.value(metadata !{i64 %b}, i64 0, metadata !11, metadata !{metadata !"0x102"}), !dbg !19
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2011-01-24 19:24:37 +00:00
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br label %while.body, !dbg !20
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while.body: ; preds = %while.body, %entry
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%b.addr.0 = phi i64 [ %b, %entry ], [ %rem, %while.body ]
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%a.addr.0 = phi i64 [ %a, %entry ], [ %b.addr.0, %while.body ]
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%rem = srem i64 %a.addr.0, %b.addr.0, !dbg !21
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%cmp = icmp eq i64 %rem, 0, !dbg !23
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br i1 %cmp, label %if.then, label %while.body, !dbg !23
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if.then: ; preds = %while.body
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2014-10-03 20:01:09 +00:00
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tail call void @llvm.dbg.value(metadata !{i64 %rem}, i64 0, metadata !12, metadata !{metadata !"0x102"}), !dbg !21
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2011-01-24 19:24:37 +00:00
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ret i64 %b.addr.0, !dbg !23
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}
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define i32 @main() nounwind optsize ssp {
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entry:
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%call = tail call i32 @rand() nounwind optsize, !dbg !24
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2014-10-03 20:01:09 +00:00
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tail call void @llvm.dbg.value(metadata !{i32 %call}, i64 0, metadata !14, metadata !{metadata !"0x102"}), !dbg !24
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2011-01-24 19:24:37 +00:00
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%cmp = icmp ugt i32 %call, 21, !dbg !25
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br i1 %cmp, label %cond.true, label %cond.end, !dbg !25
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cond.true: ; preds = %entry
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%call1 = tail call i32 @rand() nounwind optsize, !dbg !25
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br label %cond.end, !dbg !25
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i32 [ %call1, %cond.true ], [ %call, %entry ], !dbg !25
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2014-10-03 20:01:09 +00:00
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tail call void @llvm.dbg.value(metadata !{i32 %cond}, i64 0, metadata !17, metadata !{metadata !"0x102"}), !dbg !25
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2011-01-24 19:24:37 +00:00
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%conv = sext i32 %cond to i64, !dbg !26
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%conv5 = zext i32 %call to i64, !dbg !26
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%call6 = tail call i64 @gcd(i64 %conv, i64 %conv5) optsize, !dbg !26
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%cmp7 = icmp eq i64 %call6, 0
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br i1 %cmp7, label %return, label %if.then, !dbg !26
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if.then: ; preds = %cond.end
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%puts = tail call i32 @puts(i8* getelementptr inbounds ([21 x i8]* @str, i64 0, i64 0))
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%call12 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([14 x i8]* @.str1, i64 0, i64 0), i32 %call, i32 %cond) nounwind optsize, !dbg !26
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ret i32 1, !dbg !27
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return: ; preds = %cond.end
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ret i32 0, !dbg !27
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}
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declare i32 @rand() optsize
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declare i32 @printf(i8* nocapture, ...) nounwind optsize
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Move the complex address expression out of DIVariable and into an extra
argument of the llvm.dbg.declare/llvm.dbg.value intrinsics.
Previously, DIVariable was a variable-length field that has an optional
reference to a Metadata array consisting of a variable number of
complex address expressions. In the case of OpPiece expressions this is
wasting a lot of storage in IR, because when an aggregate type is, e.g.,
SROA'd into all of its n individual members, the IR will contain n copies
of the DIVariable, all alike, only differing in the complex address
reference at the end.
By making the complex address into an extra argument of the
dbg.value/dbg.declare intrinsics, all of the pieces can reference the
same variable and the complex address expressions can be uniqued across
the CU, too.
Down the road, this will allow us to move other flags, such as
"indirection" out of the DIVariable, too.
The new intrinsics look like this:
declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr)
declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr)
This patch adds a new LLVM-local tag to DIExpressions, so we can detect
and pretty-print DIExpression metadata nodes.
What this patch doesn't do:
This patch does not touch the "Indirect" field in DIVariable; but moving
that into the expression would be a natural next step.
http://reviews.llvm.org/D4919
rdar://problem/17994491
Thanks to dblaikie and dexonsmith for reviewing this patch!
Note: I accidentally committed a bogus older version of this patch previously.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-01 18:55:02 +00:00
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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2011-01-24 19:24:37 +00:00
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declare i32 @puts(i8* nocapture) nounwind
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2013-03-08 00:23:31 +00:00
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!llvm.dbg.cu = !{!2}
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2013-11-22 21:49:45 +00:00
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!llvm.module.flags = !{!33}
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2011-01-24 19:24:37 +00:00
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2014-10-03 20:01:09 +00:00
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!0 = metadata !{metadata !"0x2e\00gcd\00gcd\00\005\000\001\000\006\00256\001\000", metadata !31, metadata !1, metadata !3, null, i64 (i64, i64)* @gcd, null, null, metadata !29} ; [ DW_TAG_subprogram ] [line 5] [def] [scope 0] [gcd]
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!1 = metadata !{metadata !"0x29", metadata !31} ; [ DW_TAG_file_type ]
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!2 = metadata !{metadata !"0x11\0012\00clang version 2.9 (trunk 124117)\001\00\000\00\001", metadata !31, metadata !32, metadata !32, metadata !28, null, null} ; [ DW_TAG_compile_unit ]
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!3 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !31, metadata !1, null, metadata !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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2011-01-24 19:24:37 +00:00
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!4 = metadata !{metadata !5}
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2014-10-03 20:01:09 +00:00
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!5 = metadata !{metadata !"0x24\00long int\000\0064\0064\000\000\005", null, metadata !2} ; [ DW_TAG_base_type ]
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!6 = metadata !{metadata !"0x2e\00main\00main\00\0025\000\001\000\006\000\001\000", metadata !31, metadata !1, metadata !7, null, i32 ()* @main, null, null, metadata !30} ; [ DW_TAG_subprogram ] [line 25] [def] [scope 0] [main]
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!7 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !31, metadata !1, null, metadata !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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2011-01-24 19:24:37 +00:00
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!8 = metadata !{metadata !9}
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2014-10-03 20:01:09 +00:00
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!9 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, metadata !2} ; [ DW_TAG_base_type ]
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!10 = metadata !{metadata !"0x101\00a\005\000", metadata !0, metadata !1, metadata !5} ; [ DW_TAG_arg_variable ]
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!11 = metadata !{metadata !"0x101\00b\005\000", metadata !0, metadata !1, metadata !5} ; [ DW_TAG_arg_variable ]
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!12 = metadata !{metadata !"0x100\00c\006\000", metadata !13, metadata !1, metadata !5} ; [ DW_TAG_auto_variable ]
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!13 = metadata !{metadata !"0xb\005\0052\000", metadata !31, metadata !0} ; [ DW_TAG_lexical_block ]
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!14 = metadata !{metadata !"0x100\00m\0026\000", metadata !15, metadata !1, metadata !16} ; [ DW_TAG_auto_variable ]
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!15 = metadata !{metadata !"0xb\0025\0012\002", metadata !31, metadata !6} ; [ DW_TAG_lexical_block ]
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!16 = metadata !{metadata !"0x24\00unsigned int\000\0032\0032\000\000\007", null, metadata !2} ; [ DW_TAG_base_type ]
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!17 = metadata !{metadata !"0x100\00z_s\0027\000", metadata !15, metadata !1, metadata !9} ; [ DW_TAG_auto_variable ]
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2011-01-24 19:24:37 +00:00
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!18 = metadata !{i32 5, i32 41, metadata !0, null}
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!19 = metadata !{i32 5, i32 49, metadata !0, null}
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!20 = metadata !{i32 7, i32 5, metadata !13, null}
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!21 = metadata !{i32 8, i32 9, metadata !22, null}
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2014-10-03 20:01:09 +00:00
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!22 = metadata !{metadata !"0xb\007\0014\001", metadata !31, metadata !13} ; [ DW_TAG_lexical_block ]
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2011-01-24 19:24:37 +00:00
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!23 = metadata !{i32 9, i32 9, metadata !22, null}
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!24 = metadata !{i32 26, i32 38, metadata !15, null}
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!25 = metadata !{i32 27, i32 38, metadata !15, null}
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!26 = metadata !{i32 28, i32 9, metadata !15, null}
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!27 = metadata !{i32 30, i32 1, metadata !15, null}
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2013-03-17 21:13:55 +00:00
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!28 = metadata !{metadata !0, metadata !6}
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!29 = metadata !{metadata !10, metadata !11, metadata !12}
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!30 = metadata !{metadata !14, metadata !17}
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!31 = metadata !{metadata !"rem_small.c", metadata !"/private/tmp"}
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2013-07-29 18:12:58 +00:00
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!32 = metadata !{i32 0}
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2014-10-03 20:01:09 +00:00
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!33 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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