[llvm-commits] [llvm] r83573 - in /llvm/trunk: lib/Analysis/DebugInfo.cpp test/DebugInfo/2009-10-08-DebugInfo-NullGlobalVariable.ll
Bill Wendling
isanbard at gmail.com
Thu Oct 8 13:52:51 PDT 2009
Author: void
Date: Thu Oct 8 15:52:51 2009
New Revision: 83573
URL: http://llvm.org/viewvc/llvm-project?rev=83573&view=rev
Log:
It's possible for a global variable to be optimized out of a metadata object. So
we should allow a "null" with this dyn_cast.
Added:
llvm/trunk/test/DebugInfo/2009-10-08-DebugInfo-NullGlobalVariable.ll
Modified:
llvm/trunk/lib/Analysis/DebugInfo.cpp
Modified: llvm/trunk/lib/Analysis/DebugInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/DebugInfo.cpp?rev=83573&r1=83572&r2=83573&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/DebugInfo.cpp (original)
+++ llvm/trunk/lib/Analysis/DebugInfo.cpp Thu Oct 8 15:52:51 2009
@@ -116,7 +116,7 @@
return 0;
if (Elt < DbgNode->getNumElements())
- return dyn_cast<GlobalVariable>(DbgNode->getElement(Elt));
+ return dyn_cast_or_null<GlobalVariable>(DbgNode->getElement(Elt));
return 0;
}
Added: llvm/trunk/test/DebugInfo/2009-10-08-DebugInfo-NullGlobalVariable.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/2009-10-08-DebugInfo-NullGlobalVariable.ll?rev=83573&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/2009-10-08-DebugInfo-NullGlobalVariable.ll (added)
+++ llvm/trunk/test/DebugInfo/2009-10-08-DebugInfo-NullGlobalVariable.ll Thu Oct 8 15:52:51 2009
@@ -0,0 +1,72 @@
+; RUN: llc < %s
+
+%struct.TConstantDictionary = type { %struct.__CFDictionary* }
+%struct.TSharedGlobalSet_AS = type { [52 x i32], [20 x i32], [22 x i32], [8 x i32], [20 x i32], [146 x i32] }
+%struct.__CFDictionary = type opaque
+
+ at llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @func to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
+
+define void @func() ssp {
+entry:
+ tail call void @llvm.dbg.func.start(metadata !13)
+ tail call void @llvm.dbg.stoppoint(i32 1001, i32 0, metadata !1)
+ %0 = tail call %struct.TSharedGlobalSet_AS* @g1() nounwind ; <%struct.TSharedGlobalSet_AS*> [#uses=1]
+ %1 = getelementptr inbounds %struct.TSharedGlobalSet_AS* %0, i32 0, i32 4, i32 4 ; <i32*> [#uses=1]
+ %2 = bitcast i32* %1 to %struct.TConstantDictionary* ; <%struct.TConstantDictionary*> [#uses=1]
+ tail call void @g2(%struct.TConstantDictionary* %2) ssp
+ tail call void @llvm.dbg.stoppoint(i32 1002, i32 0, metadata !1)
+ %3 = tail call %struct.TSharedGlobalSet_AS* @g1() nounwind ; <%struct.TSharedGlobalSet_AS*> [#uses=1]
+ %4 = getelementptr inbounds %struct.TSharedGlobalSet_AS* %3, i32 0, i32 4, i32 3 ; <i32*> [#uses=1]
+ %5 = bitcast i32* %4 to %struct.TConstantDictionary* ; <%struct.TConstantDictionary*> [#uses=1]
+ tail call void @g4(%struct.TConstantDictionary* %5) ssp
+ tail call void @llvm.dbg.stoppoint(i32 1003, i32 0, metadata !1)
+ %6 = tail call %struct.TSharedGlobalSet_AS* @g1() nounwind ; <%struct.TSharedGlobalSet_AS*> [#uses=1]
+ %7 = getelementptr inbounds %struct.TSharedGlobalSet_AS* %6, i32 0, i32 4, i32 2 ; <i32*> [#uses=1]
+ %8 = bitcast i32* %7 to %struct.TConstantDictionary* ; <%struct.TConstantDictionary*> [#uses=1]
+ tail call void @g3(%struct.TConstantDictionary* %8) ssp
+ tail call void @llvm.dbg.stoppoint(i32 1004, i32 0, metadata !1)
+ %9 = tail call %struct.TSharedGlobalSet_AS* @g1() nounwind ; <%struct.TSharedGlobalSet_AS*> [#uses=1]
+ %10 = getelementptr inbounds %struct.TSharedGlobalSet_AS* %9, i32 0, i32 4, i32 1 ; <i32*> [#uses=1]
+ %11 = bitcast i32* %10 to %struct.TConstantDictionary* ; <%struct.TConstantDictionary*> [#uses=1]
+ tail call void @g4(%struct.TConstantDictionary* %11) ssp
+ tail call void @llvm.dbg.stoppoint(i32 1005, i32 0, metadata !1)
+ tail call void @g5()
+ tail call void @llvm.dbg.stoppoint(i32 1006, i32 0, metadata !1)
+ tail call void @llvm.dbg.region.end(metadata !13)
+ ret void
+}
+
+declare void @llvm.dbg.func.start(metadata) nounwind readnone
+
+declare void @llvm.dbg.stoppoint(i32, i32, metadata) nounwind readnone
+
+declare void @llvm.dbg.region.end(metadata) nounwind readnone
+
+declare %struct.TSharedGlobalSet_AS* @g1() nounwind readonly ssp
+
+declare void @g2(%struct.TConstantDictionary* nocapture) ssp align 2
+
+declare void @g3(%struct.TConstantDictionary* nocapture) ssp align 2
+
+declare void @g4(%struct.TConstantDictionary* nocapture) ssp align 2
+
+declare void @g5()
+
+!llvm.dbg.gv = !{!0, !9, !10, !11, !12}
+
+!0 = metadata !{i32 458804, i32 0, metadata !1, metadata !"_ZZ7UASInitmmmmmmmmmE5C.408", metadata !"C.408", metadata !"_ZZ7UASInitmmmmmmmmmE5C.408", metadata !1, i32 874, metadata !2, i1 false, i1 true, null}; [DW_TAG_variable ]
+!1 = metadata !{i32 458769, i32 0, i32 4, metadata !"func.cp", metadata !"/tmp/func", metadata !"4.2.1 (Based on Apple Inc. build 5653) (LLVM build 2311)", i1 false, i1 false, metadata !"", i32 0}; [DW_TAG_compile_unit ]
+!2 = metadata !{i32 458753, metadata !3, metadata !"", metadata !3, i32 0, i64 16, i64 16, i64 0, i32 0, metadata !4, metadata !7, i32 0}; [DW_TAG_array_type ]
+!3 = metadata !{i32 458769, i32 0, i32 4, metadata !"testcase.ii", metadata !"/tmp/", metadata !"4.2.1 (Based on Apple Inc. build 5653) (LLVM build 2311)", i1 true, i1 false, metadata !"", i32 0}; [DW_TAG_compile_unit ]
+!4 = metadata !{i32 458774, metadata !3, metadata !"UniChar", metadata !5, i32 417, i64 0, i64 0, i64 0, i32 0, metadata !6}; [DW_TAG_typedef ]
+!5 = metadata !{i32 458769, i32 0, i32 4, metadata !"MacTypes.h", metadata !"/System/Library/Frameworks/CoreServices.framework/Headers/../Frameworks/CarbonCore.framework/Headers", metadata !"4.2.1 (Based on Apple Inc. build 5653) (LLVM build 2311)", i1 false, i1 true, metadata !"", i32 0}; [DW_TAG_compile_unit ]
+!6 = metadata !{i32 458788, metadata !3, metadata !"short unsigned int", metadata !3, i32 0, i64 16, i64 16, i64 0, i32 0, i32 7}; [DW_TAG_base_type ]
+!7 = metadata !{metadata !8}
+!8 = metadata !{i32 458785, i64 0, i64 0}; [DW_TAG_subrange_type ]
+!9 = metadata !{i32 458804, i32 0, metadata !1, metadata !"_ZZ7UASInitmmmmmmmmmE5C.409", metadata !"C.409", metadata !"_ZZ7UASInitmmmmmmmmmE5C.409", metadata !1, i32 877, metadata !2, i1 false, i1 true, null}; [DW_TAG_variable ]
+!10 = metadata !{i32 458804, i32 0, metadata !1, metadata !"_ZZ7UASInitmmmmmmmmmE5C.410", metadata !"C.410", metadata !"_ZZ7UASInitmmmmmmmmmE5C.410", metadata !1, i32 880, metadata !2, i1 false, i1 true, null}; [DW_TAG_variable ]
+!11 = metadata !{i32 458804, i32 0, metadata !1, metadata !"_ZZ7UASInitmmmmmmmmmE5C.411", metadata !"C.411", metadata !"_ZZ7UASInitmmmmmmmmmE5C.411", metadata !1, i32 924, metadata !2, i1 false, i1 true, null}; [DW_TAG_variable ]
+!12 = metadata !{i32 458804, i32 0, metadata !1, metadata !"_ZZ7UASInitmmmmmmmmmE5C.412", metadata !"C.412", metadata !"_ZZ7UASInitmmmmmmmmmE5C.412", metadata !1, i32 928, metadata !2, i1 false, i1 true, null}; [DW_TAG_variable ]
+!13 = metadata !{i32 458798, i32 0, metadata !3, metadata !"UASShutdown", metadata !"UASShutdown", metadata !"_Z11UASShutdownv", metadata !1, i32 999, metadata !14, i1 false, i1 true}; [DW_TAG_subprogram ]
+!14 = metadata !{i32 458773, metadata !3, metadata !"", metadata !3, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !15, i32 0}; [DW_TAG_subroutine_type ]
+!15 = metadata !{null}
More information about the llvm-commits
mailing list