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-rw-r--r--test/DebugInfo/X86/nophysreg.ll203
1 files changed, 203 insertions, 0 deletions
diff --git a/test/DebugInfo/X86/nophysreg.ll b/test/DebugInfo/X86/nophysreg.ll
new file mode 100644
index 0000000..6a8b2e6
--- /dev/null
+++ b/test/DebugInfo/X86/nophysreg.ll
@@ -0,0 +1,203 @@
+; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+;
+; PR22296: In this testcase the DBG_VALUE describing "p5" becomes unavailable
+; because the register its address is in is clobbered and we (currently) aren't
+; smart enough to realize that the value is rematerialized immediately after the
+; DBG_VALUE and/or is actually a stack slot.
+;
+; Test that we handle this situation gracefully by omitting the DW_AT_location
+; and not asserting.
+; Note that this check may XPASS in the future if DbgValueHistoryCalculator
+; becoms smarter. That would be fine, too.
+;
+; CHECK: DW_TAG_subprogram
+; CHECK: linkage_name{{.*}}_Z2f21A
+; CHECK: DW_TAG_formal_parameter
+; CHECK-NOT: DW_AT_location
+; CHECK-NEXT: DW_AT_name {{.*}}"p5"
+;
+; // Compile at -O1
+; struct A {
+; int *m1;
+; int m2;
+; };
+;
+; void f1(int *p1, int p2);
+; void __attribute__((always_inline)) f2(A p5) { f1(p5.m1, p5.m2); }
+;
+; void func(void*);
+; void func(const int &, const int&);
+; int cond();
+; void f() {
+; while (cond()) {
+; int x;
+; func(x, 0);
+; while (cond()) {
+; char y;
+; func(&y);
+; char j;
+; func(&j);
+; char I;
+; func(&I);
+; func(0, 0);
+; A g;
+; g.m1 = &x;
+; f2(g);
+; }
+; }
+; }
+; ModuleID = 'test.cpp'
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.10.0"
+
+%struct.A = type { i32*, i32 }
+
+; Function Attrs: alwaysinline ssp uwtable
+define void @_Z2f21A(i32* %p5.coerce0, i32 %p5.coerce1) #0 {
+entry:
+ tail call void @llvm.dbg.value(metadata i32* %p5.coerce0, i64 0, metadata !16, metadata !33), !dbg !34
+ tail call void @llvm.dbg.value(metadata i32 %p5.coerce1, i64 0, metadata !16, metadata !35), !dbg !34
+ tail call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !16, metadata !36), !dbg !34
+ tail call void @_Z2f1Pii(i32* %p5.coerce0, i32 %p5.coerce1), !dbg !37
+ ret void, !dbg !38
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+declare void @_Z2f1Pii(i32*, i32) #2
+
+; Function Attrs: ssp uwtable
+define void @_Z1fv() #3 {
+entry:
+ %x = alloca i32, align 4
+ %ref.tmp = alloca i32, align 4
+ %y = alloca i8, align 1
+ %j = alloca i8, align 1
+ %I = alloca i8, align 1
+ %ref.tmp5 = alloca i32, align 4
+ %ref.tmp6 = alloca i32, align 4
+ %call11 = call i32 @_Z4condv(), !dbg !39
+ %tobool12 = icmp eq i32 %call11, 0, !dbg !39
+ br i1 %tobool12, label %while.end7, label %while.body, !dbg !40
+
+while.cond.loopexit: ; preds = %while.body4, %while.body
+ %call = call i32 @_Z4condv(), !dbg !39
+ %tobool = icmp eq i32 %call, 0, !dbg !39
+ br i1 %tobool, label %while.end7, label %while.body, !dbg !40
+
+while.body: ; preds = %entry, %while.cond.loopexit
+ store i32 0, i32* %ref.tmp, align 4, !dbg !41, !tbaa !42
+ call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !21, metadata !36), !dbg !46
+ call void @_Z4funcRKiS0_(i32* dereferenceable(4) %x, i32* dereferenceable(4) %ref.tmp), !dbg !47
+ %call29 = call i32 @_Z4condv(), !dbg !48
+ %tobool310 = icmp eq i32 %call29, 0, !dbg !48
+ br i1 %tobool310, label %while.cond.loopexit, label %while.body4, !dbg !49
+
+while.body4: ; preds = %while.body, %while.body4
+ call void @llvm.dbg.value(metadata i8* %y, i64 0, metadata !23, metadata !36), !dbg !50
+ call void @_Z4funcPv(i8* %y), !dbg !51
+ call void @llvm.dbg.value(metadata i8* %j, i64 0, metadata !26, metadata !36), !dbg !52
+ call void @_Z4funcPv(i8* %j), !dbg !53
+ call void @llvm.dbg.value(metadata i8* %I, i64 0, metadata !27, metadata !36), !dbg !54
+ call void @_Z4funcPv(i8* %I), !dbg !55
+ store i32 0, i32* %ref.tmp5, align 4, !dbg !56, !tbaa !42
+ store i32 0, i32* %ref.tmp6, align 4, !dbg !57, !tbaa !42
+ call void @_Z4funcRKiS0_(i32* dereferenceable(4) %ref.tmp5, i32* dereferenceable(4) %ref.tmp6), !dbg !58
+ call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !28, metadata !36), !dbg !59
+ call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !28, metadata !33), !dbg !59
+ call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !21, metadata !36), !dbg !46
+ call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !60, metadata !33), !dbg !62
+ call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !60, metadata !35), !dbg !62
+ call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !60, metadata !36), !dbg !62
+ call void @_Z2f1Pii(i32* %x, i32 undef), !dbg !63
+ %call2 = call i32 @_Z4condv(), !dbg !48
+ %tobool3 = icmp eq i32 %call2, 0, !dbg !48
+ br i1 %tobool3, label %while.cond.loopexit, label %while.body4, !dbg !49
+
+while.end7: ; preds = %while.cond.loopexit, %entry
+ ret void, !dbg !64
+}
+
+declare i32 @_Z4condv()
+
+declare void @_Z4funcRKiS0_(i32* dereferenceable(4), i32* dereferenceable(4))
+
+declare void @_Z4funcPv(i8*)
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #0 = { alwaysinline ssp uwtable }
+attributes #1 = { nounwind readnone }
+attributes #3 = { ssp uwtable }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!29, !30, !31}
+!llvm.ident = !{!32}
+
+!0 = !{!"0x11\004\00clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)\001\00\000\00\001", !1, !2, !3, !10, !2, !2} ; [ DW_TAG_compile_unit ] [/test.cpp] [DW_LANG_C_plus_plus]
+!1 = !{!"test.cpp", !""}
+!2 = !{}
+!3 = !{!4}
+!4 = !{!"0x13\00A\001\00128\0064\000\000\000", !1, null, null, !5, null, null, !"_ZTS1A"} ; [ DW_TAG_structure_type ] [A] [line 1, size 128, align 64, offset 0] [def] [from ]
+!5 = !{!6, !9}
+!6 = !{!"0xd\00m1\002\0064\0064\000\000", !1, !"_ZTS1A", !7} ; [ DW_TAG_member ] [m1] [line 2, size 64, align 64, offset 0] [from ]
+!7 = !{!"0xf\00\000\0064\0064\000\000", null, null, !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
+!8 = !{!"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]
+!9 = !{!"0xd\00m2\003\0032\0032\0064\000", !1, !"_ZTS1A", !8} ; [ DW_TAG_member ] [m2] [line 3, size 32, align 32, offset 64] [from int]
+!10 = !{!11, !17}
+!11 = !{!"0x2e\00f2\00f2\00_Z2f21A\007\000\001\000\000\00256\001\007", !1, !12, !13, null, void (i32*, i32)* @_Z2f21A, null, null, !15} ; [ DW_TAG_subprogram ] [line 7] [def] [f2]
+!12 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/test.cpp]
+!13 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !14, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!14 = !{null, !"_ZTS1A"}
+!15 = !{!16}
+!16 = !{!"0x101\00p5\0016777223\000", !11, !12, !"_ZTS1A"} ; [ DW_TAG_arg_variable ] [p5] [line 7]
+!17 = !{!"0x2e\00f\00f\00_Z1fv\0012\000\001\000\000\00256\001\0012", !1, !12, !18, null, void ()* @_Z1fv, null, null, !20} ; [ DW_TAG_subprogram ] [line 12] [def] [f]
+!18 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !19, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!19 = !{null}
+!20 = !{!21, !23, !26, !27, !28}
+!21 = !{!"0x100\00x\0014\000", !22, !12, !8} ; [ DW_TAG_auto_variable ] [x] [line 14]
+!22 = !{!"0xb\0013\0018\000", !1, !17} ; [ DW_TAG_lexical_block ] [/test.cpp]
+!23 = !{!"0x100\00y\0017\000", !24, !12, !25} ; [ DW_TAG_auto_variable ] [y] [line 17]
+!24 = !{!"0xb\0016\0020\001", !1, !22} ; [ DW_TAG_lexical_block ] [/test.cpp]
+!25 = !{!"0x24\00char\000\008\008\000\000\006", null, null} ; [ DW_TAG_base_type ] [char] [line 0, size 8, align 8, offset 0, enc DW_ATE_signed_char]
+!26 = !{!"0x100\00j\0019\000", !24, !12, !25} ; [ DW_TAG_auto_variable ] [j] [line 19]
+!27 = !{!"0x100\00I\0021\000", !24, !12, !25} ; [ DW_TAG_auto_variable ] [I] [line 21]
+!28 = !{!"0x100\00g\0024\000", !24, !12, !"_ZTS1A"} ; [ DW_TAG_auto_variable ] [g] [line 24]
+!29 = !{i32 2, !"Dwarf Version", i32 2}
+!30 = !{i32 2, !"Debug Info Version", i32 2}
+!31 = !{i32 1, !"PIC Level", i32 2}
+!32 = !{!"clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)"}
+!33 = !{!"0x102\00157\000\008"} ; [ DW_TAG_expression ] [DW_OP_bit_piece offset=0, size=8]
+!34 = !MDLocation(line: 7, column: 42, scope: !11)
+!35 = !{!"0x102\00157\008\004"} ; [ DW_TAG_expression ] [DW_OP_bit_piece offset=8, size=4]
+!36 = !{!"0x102"} ; [ DW_TAG_expression ]
+!37 = !MDLocation(line: 7, column: 48, scope: !11)
+!38 = !MDLocation(line: 7, column: 66, scope: !11)
+!39 = !MDLocation(line: 13, column: 10, scope: !17)
+!40 = !MDLocation(line: 13, column: 3, scope: !17)
+!41 = !MDLocation(line: 15, column: 13, scope: !22)
+!42 = !{!43, !43, i64 0}
+!43 = !{!"int", !44, i64 0}
+!44 = !{!"omnipotent char", !45, i64 0}
+!45 = !{!"Simple C/C++ TBAA"}
+!46 = !MDLocation(line: 14, column: 9, scope: !22)
+!47 = !MDLocation(line: 15, column: 5, scope: !22)
+!48 = !MDLocation(line: 16, column: 12, scope: !22)
+!49 = !MDLocation(line: 16, column: 5, scope: !22)
+!50 = !MDLocation(line: 17, column: 12, scope: !24)
+!51 = !MDLocation(line: 18, column: 7, scope: !24)
+!52 = !MDLocation(line: 19, column: 12, scope: !24)
+!53 = !MDLocation(line: 20, column: 7, scope: !24)
+!54 = !MDLocation(line: 21, column: 12, scope: !24)
+!55 = !MDLocation(line: 22, column: 7, scope: !24)
+!56 = !MDLocation(line: 23, column: 12, scope: !24)
+!57 = !MDLocation(line: 23, column: 15, scope: !24)
+!58 = !MDLocation(line: 23, column: 7, scope: !24)
+!59 = !MDLocation(line: 24, column: 9, scope: !24)
+!60 = !{!"0x101\00p5\0016777223\000", !11, !12, !"_ZTS1A", !61} ; [ DW_TAG_arg_variable ] [p5] [line 7]
+!61 = distinct !MDLocation(line: 26, column: 7, scope: !24)
+!62 = !MDLocation(line: 7, column: 42, scope: !11, inlinedAt: !61)
+!63 = !MDLocation(line: 7, column: 48, scope: !11, inlinedAt: !61)
+!64 = !MDLocation(line: 29, column: 1, scope: !17)
generated by cgit v1.1 at 2024-12-22 11:41:44 +0000