2014-08-19 02:09:57 +00:00
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; RUN: llc < %s -mcpu=generic -mtriple=i386-apple-darwin -no-integrated-as
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@g1 = global double 0.000000e+00, align 8
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@g2 = global i32 0, align 4
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define void @_Z16fpuop_arithmeticjj(i32, i32) {
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entry:
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switch i32 undef, label %sw.bb.i1921 [
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]
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sw.bb261: ; preds = %entry, %entry
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unreachable
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sw.bb.i1921: ; preds = %if.end504
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switch i32 undef, label %if.end511 [
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i32 1, label %sw.bb27.i
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]
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sw.bb27.i: ; preds = %sw.bb.i1921
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%conv.i.i1923 = fpext float undef to x86_fp80
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br label %if.end511
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if.end511: ; preds = %sw.bb27.i, %sw.bb13.i
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%src.sroa.0.0.src.sroa.0.0.2280 = phi x86_fp80 [ %conv.i.i1923, %sw.bb27.i ], [ undef, %sw.bb.i1921 ]
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switch i32 undef, label %sw.bb992 [
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i32 3, label %sw.bb735
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i32 18, label %if.end41.i2210
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]
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sw.bb735: ; preds = %if.end511
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%2 = call x86_fp80 asm sideeffect "frndint", "={st},0,~{dirflag},~{fpsr},~{flags}"(x86_fp80 %src.sroa.0.0.src.sroa.0.0.2280)
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unreachable
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if.end41.i2210: ; preds = %if.end511
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2014-10-03 20:01:09 +00:00
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call void @llvm.dbg.value(metadata !{x86_fp80 %src.sroa.0.0.src.sroa.0.0.2280}, i64 0, metadata !20, metadata !{metadata !"0x102"})
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2014-08-19 02:09:57 +00:00
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unreachable
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sw.bb992: ; preds = %if.end511
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ret void
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}
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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)
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2014-08-19 02:09:57 +00:00
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!24, !25}
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2014-10-03 20:01:09 +00:00
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!0 = metadata !{metadata !"0x11\004\00clang version 3.6.0 (http://llvm.org/git/clang 8444ae7cfeaefae031f8fedf0d1435ca3b14d90b) (http://llvm.org/git/llvm 886f0101a7d176543b831f5efb74c03427244a55)\001\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !21, metadata !2} ; [ DW_TAG_compile_unit ] [x87stackifier/fpu_ieee.cpp] [DW_LANG_C_plus_plus]
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2014-08-19 02:09:57 +00:00
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!1 = metadata !{metadata !"fpu_ieee.cpp", metadata !"x87stackifier"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4}
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2014-10-03 20:01:09 +00:00
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!4 = metadata !{metadata !"0x2e\00fpuop_arithmetic\00fpuop_arithmetic\00_Z16fpuop_arithmeticjj\0011\000\001\000\006\00256\001\0013", metadata !5, metadata !6, metadata !7, null, void (i32, i32)* @_Z16fpuop_arithmeticjj, null, null, metadata !10} ; [ DW_TAG_subprogram ] [line 11] [def] [scope 13] [fpuop_arithmetic]
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2014-08-19 02:09:57 +00:00
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!5 = metadata !{metadata !"f1.cpp", metadata !"x87stackifier"}
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2014-10-03 20:01:09 +00:00
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!6 = metadata !{metadata !"0x29", metadata !5} ; [ DW_TAG_file_type ] [x87stackifier/f1.cpp]
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!7 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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2014-08-19 02:09:57 +00:00
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!8 = metadata !{null, metadata !9, metadata !9}
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2014-10-03 20:01:09 +00:00
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!9 = metadata !{metadata !"0x24\00unsigned int\000\0032\0032\000\000\007", null, null} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned]
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2014-08-19 02:09:57 +00:00
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!10 = metadata !{metadata !11, metadata !12, metadata !13, metadata !18, metadata !20}
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2014-10-03 20:01:09 +00:00
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!11 = metadata !{metadata !"0x101\00\0016777227\000", metadata !4, metadata !6, metadata !9} ; [ DW_TAG_arg_variable ] [line 11]
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!12 = metadata !{metadata !"0x101\00\0033554443\000", metadata !4, metadata !6, metadata !9} ; [ DW_TAG_arg_variable ] [line 11]
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!13 = metadata !{metadata !"0x100\00x\0014\000", metadata !4, metadata !6, metadata !14} ; [ DW_TAG_auto_variable ] [x] [line 14]
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!14 = metadata !{metadata !"0x16\00fpu_extended\003\000\000\000\000", metadata !5, null, metadata !15} ; [ DW_TAG_typedef ] [fpu_extended] [line 3, size 0, align 0, offset 0] [from fpu_register]
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!15 = metadata !{metadata !"0x16\00fpu_register\002\000\000\000\000", metadata !5, null, metadata !16} ; [ DW_TAG_typedef ] [fpu_register] [line 2, size 0, align 0, offset 0] [from uae_f64]
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!16 = metadata !{metadata !"0x16\00uae_f64\001\000\000\000\000", metadata !5, null, metadata !17} ; [ DW_TAG_typedef ] [uae_f64] [line 1, size 0, align 0, offset 0] [from double]
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!17 = metadata !{metadata !"0x24\00double\000\0064\0064\000\000\004", null, null} ; [ DW_TAG_base_type ] [double] [line 0, size 64, align 64, offset 0, enc DW_ATE_float]
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!18 = metadata !{metadata !"0x100\00a\0015\000", metadata !4, metadata !6, metadata !19} ; [ DW_TAG_auto_variable ] [a] [line 15]
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!19 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!20 = metadata !{metadata !"0x100\00value\0016\000", metadata !4, metadata !6, metadata !14} ; [ DW_TAG_auto_variable ] [value] [line 16]
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2014-08-19 02:09:57 +00:00
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!21 = metadata !{metadata !22, metadata !23}
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2014-10-03 20:01:09 +00:00
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!22 = metadata !{metadata !"0x34\00g1\00g1\00\005\000\001", null, metadata !6, metadata !14, double* @g1, null} ; [ DW_TAG_variable ] [g1] [line 5] [def]
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!23 = metadata !{metadata !"0x34\00g2\00g2\00\006\000\001", null, metadata !6, metadata !19, i32* @g2, null} ; [ DW_TAG_variable ] [g2] [line 6] [def]
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2014-08-19 02:09:57 +00:00
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!24 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
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2014-10-03 20:01:09 +00:00
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!25 = metadata !{i32 2, metadata !"Debug Info Version", i32 2}
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