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https://github.com/c64scene-ar/llvm-6502.git
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988b78a846
buildbot - do not insert debug intrinsics before phi nodes. Debug info for optimized code: Support variables that are on the stack and described by DBG_VALUEs during their lifetime. Previously, when a variable was at a FrameIndex for any part of its lifetime, this would shadow all other DBG_VALUEs and only a single fbreg location would be emitted, which in fact is only valid for a small range and not the entire lexical scope of the variable. The included dbg-value-const-byref testcase demonstrates this. This patch fixes this by Local - emitting dbg.value intrinsics for allocas that are passed by reference - dropping all dbg.declares (they are now fully lowered to dbg.values) SelectionDAG - renamed constructors for SDDbgValue for better readability. - fix UserValue::match() to handle indirect values correctly - not inserting an MMI table entries for dbg.values that describe allocas. - lowering dbg.values that describe allocas into *indirect* DBG_VALUEs. CodeGenPrepare - leaving dbg.values for an alloca were they are (see comment) Other - regenerated/updated instcombine.ll testcase and included source rdar://problem/16679879 http://reviews.llvm.org/D3374 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207269 91177308-0d34-0410-b5e6-96231b3b80d8
80 lines
4.0 KiB
LLVM
80 lines
4.0 KiB
LLVM
; RUN: opt %s -O2 -S -o - | FileCheck %s
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; Verify that we emit the same intrinsic at most once.
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; rdar://problem/13056109
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;
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; CHECK: call void @llvm.dbg.value(metadata !{%struct.i14** %p}
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; CHECK-NOT: call void @llvm.dbg.value(metadata !{%struct.i14** %p}
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; CHECK-NEXT: call i32 @foo
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; CHECK: ret
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;
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;
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; typedef struct {
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; long i;
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; } i14;
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;
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; int foo(i14**);
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;
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; void init() {
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; i14* p = 0;
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; foo(&p);
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; p->i |= 4;
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; foo(&p);
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; }
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;
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; ModuleID = 'instcombine_intrinsics.c'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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%struct.i14 = type { i64 }
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; Function Attrs: nounwind ssp uwtable
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define void @init() #0 {
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%p = alloca %struct.i14*, align 8
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call void @llvm.dbg.declare(metadata !{%struct.i14** %p}, metadata !11), !dbg !18
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store %struct.i14* null, %struct.i14** %p, align 8, !dbg !18
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%1 = call i32 @foo(%struct.i14** %p), !dbg !19
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%2 = load %struct.i14** %p, align 8, !dbg !20
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%3 = getelementptr inbounds %struct.i14* %2, i32 0, i32 0, !dbg !20
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%4 = load i64* %3, align 8, !dbg !20
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%5 = or i64 %4, 4, !dbg !20
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store i64 %5, i64* %3, align 8, !dbg !20
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%6 = call i32 @foo(%struct.i14** %p), !dbg !21
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ret void, !dbg !22
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata) #1
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declare i32 @foo(%struct.i14**)
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attributes #0 = { nounwind ssp uwtable }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [instcombine_intrinsics.c] [DW_LANG_C99]
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!1 = metadata !{metadata !"instcombine_intrinsics.c", metadata !""}
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!2 = metadata !{}
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!3 = metadata !{metadata !4}
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!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"init", metadata !"init", metadata !"", i32 7, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, void ()* @init, null, null, metadata !2, i32 7} ; [ DW_TAG_subprogram ] [line 7] [def] [init]
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!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [instcombine_intrinsics.c]
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!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{null}
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!8 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
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!9 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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!10 = metadata !{metadata !"clang version 3.5.0 "}
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!11 = metadata !{i32 786688, metadata !4, metadata !"p", metadata !5, i32 8, metadata !12, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [p] [line 8]
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!12 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !13} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from i14]
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!13 = metadata !{i32 786454, metadata !1, null, metadata !"i14", i32 3, i64 0, i64 0, i64 0, i32 0, metadata !14} ; [ DW_TAG_typedef ] [i14] [line 3, size 0, align 0, offset 0] [from ]
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!14 = metadata !{i32 786451, metadata !1, null, metadata !"", i32 1, i64 64, i64 64, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [line 1, size 64, align 64, offset 0] [def] [from ]
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!15 = metadata !{metadata !16}
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!16 = metadata !{i32 786445, metadata !1, metadata !14, metadata !"i", i32 2, i64 64, i64 64, i64 0, i32 0, metadata !17} ; [ DW_TAG_member ] [i] [line 2, size 64, align 64, offset 0] [from long int]
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!17 = metadata !{i32 786468, null, null, metadata !"long int", i32 0, i64 64, i64 64, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [long int] [line 0, size 64, align 64, offset 0, enc DW_ATE_signed]
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!18 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ]
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!19 = metadata !{i32 9, i32 0, metadata !4, null}
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!20 = metadata !{i32 10, i32 0, metadata !4, null}
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!21 = metadata !{i32 11, i32 0, metadata !4, null}
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!22 = metadata !{i32 12, i32 0, metadata !4, null}
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