[llvm-commits] [llvm] r127214 - in /llvm/trunk: lib/Transforms/Scalar/LICM.cpp test/Transforms/LICM/debug-value.ll
Devang Patel
dpatel at apple.com
Mon Mar 7 19:06:19 PST 2011
Author: dpatel
Date: Mon Mar 7 21:06:19 2011
New Revision: 127214
URL: http://llvm.org/viewvc/llvm-project?rev=127214&view=rev
Log:
While sinking an instruction, do not lose llvm.dbg.value intrinsic.
Added:
llvm/trunk/test/Transforms/LICM/debug-value.ll
Modified:
llvm/trunk/lib/Transforms/Scalar/LICM.cpp
Modified: llvm/trunk/lib/Transforms/Scalar/LICM.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LICM.cpp?rev=127214&r1=127213&r2=127214&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LICM.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LICM.cpp Mon Mar 7 21:06:19 2011
@@ -445,7 +445,8 @@
// enough that we handle it as a special (more efficient) case. It is more
// efficient to handle because there are no PHI nodes that need to be placed.
if (ExitBlocks.size() == 1) {
- if (!DT->dominates(I.getParent(), ExitBlocks[0])) {
+ if (!isa<DbgInfoIntrinsic>(I) &&
+ !DT->dominates(I.getParent(), ExitBlocks[0])) {
// Instruction is not used, just delete it.
CurAST->deleteValue(&I);
// If I has users in unreachable blocks, eliminate.
Added: llvm/trunk/test/Transforms/LICM/debug-value.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LICM/debug-value.ll?rev=127214&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/LICM/debug-value.ll (added)
+++ llvm/trunk/test/Transforms/LICM/debug-value.ll Mon Mar 7 21:06:19 2011
@@ -0,0 +1,62 @@
+; RUN: opt -licm -basicaa < %s -S | FileCheck %s
+
+define void @dgefa() nounwind ssp {
+entry:
+ br label %for.body
+
+for.body: ; preds = %for.cond.backedge, %entry
+ br i1 undef, label %if.then, label %for.cond.backedge, !dbg !11
+
+for.cond.backedge: ; preds = %for.body61, %for.body61.us, %for.body
+ br i1 undef, label %for.end104, label %for.body, !dbg !15
+
+if.then: ; preds = %for.body
+ br i1 undef, label %if.then27, label %if.end.if.end.split_crit_edge.critedge, !dbg !16
+
+if.then27: ; preds = %if.then
+; CHECK: tail call void @llvm.dbg.value
+ tail call void @llvm.dbg.value(metadata !18, i64 0, metadata !19), !dbg !21
+ br label %for.body61.us
+
+if.end.if.end.split_crit_edge.critedge: ; preds = %if.then
+ br label %for.body61
+
+for.body61.us: ; preds = %for.body61.us, %if.then27
+ br i1 undef, label %for.cond.backedge, label %for.body61.us, !dbg !23
+
+for.body61: ; preds = %for.body61, %if.end.if.end.split_crit_edge.critedge
+ br i1 undef, label %for.cond.backedge, label %for.body61, !dbg !23
+
+for.end104: ; preds = %for.cond.backedge
+ ret void, !dbg !24
+}
+
+declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
+
+!llvm.dbg.sp = !{!0, !6, !9, !10}
+
+!0 = metadata !{i32 589870, i32 0, metadata !1, metadata !"idamax", metadata !"idamax", metadata !"", metadata !1, i32 112, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null} ; [ DW_TAG_subprogram ]
+!1 = metadata !{i32 589865, metadata !"/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/Benchmarks/CoyoteBench/lpbench.c", metadata !"/private/tmp", metadata !2} ; [ DW_TAG_file_type ]
+!2 = metadata !{i32 589841, i32 0, i32 12, metadata !"/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/Benchmarks/CoyoteBench/lpbench.c", metadata !"/private/tmp", metadata !"clang version 2.9 (trunk 127169)", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
+!3 = metadata !{i32 589845, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
+!4 = metadata !{metadata !5}
+!5 = metadata !{i32 589860, metadata !2, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
+!6 = metadata !{i32 589870, i32 0, metadata !1, metadata !"dscal", metadata !"dscal", metadata !"", metadata !1, i32 206, metadata !7, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null} ; [ DW_TAG_subprogram ]
+!7 = metadata !{i32 589845, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !8, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
+!8 = metadata !{null}
+!9 = metadata !{i32 589870, i32 0, metadata !1, metadata !"daxpy", metadata !"daxpy", metadata !"", metadata !1, i32 230, metadata !7, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null} ; [ DW_TAG_subprogram ]
+!10 = metadata !{i32 589870, i32 0, metadata !1, metadata !"dgefa", metadata !"dgefa", metadata !"", metadata !1, i32 267, metadata !7, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null} ; [ DW_TAG_subprogram ]
+!11 = metadata !{i32 281, i32 9, metadata !12, null}
+!12 = metadata !{i32 589835, metadata !13, i32 272, i32 5, metadata !1, i32 32} ; [ DW_TAG_lexical_block ]
+!13 = metadata !{i32 589835, metadata !14, i32 271, i32 5, metadata !1, i32 31} ; [ DW_TAG_lexical_block ]
+!14 = metadata !{i32 589835, metadata !10, i32 267, i32 1, metadata !1, i32 30} ; [ DW_TAG_lexical_block ]
+!15 = metadata !{i32 271, i32 5, metadata !14, null}
+!16 = metadata !{i32 284, i32 10, metadata !17, null}
+!17 = metadata !{i32 589835, metadata !12, i32 282, i32 9, metadata !1, i32 33} ; [ DW_TAG_lexical_block ]
+!18 = metadata !{double undef}
+!19 = metadata !{i32 590080, metadata !14, metadata !"temp", metadata !1, i32 268, metadata !20, i32 0} ; [ DW_TAG_auto_variable ]
+!20 = metadata !{i32 589860, metadata !2, metadata !"double", null, i32 0, i64 64, i64 64, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ]
+!21 = metadata !{i32 286, i32 14, metadata !22, null}
+!22 = metadata !{i32 589835, metadata !17, i32 285, i32 13, metadata !1, i32 34} ; [ DW_TAG_lexical_block ]
+!23 = metadata !{i32 296, i32 13, metadata !17, null}
+!24 = metadata !{i32 313, i32 1, metadata !14, null}
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