Preserve line no. info.

Radar 9097659

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127182 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
index f8ce214750acaffd51b0c5465d0435e5470d8155..e31ccc8df101b25cdc371b3bb70a26b33b22d7a6 100644 (file)
--- a/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
+++ b/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
@@ -493,7 +493,7 @@ processLoopStridedStore(Value *DestPtr, unsigned StoreSize,
   Value *NumBytes = 
     Expander.expandCodeFor(NumBytesS, IntPtr, Preheader->getTerminator());
   
-  Value *NewCall;
+  CallInst *NewCall;
   if (SplatValue)
     NewCall = Builder.CreateMemSet(BasePtr, SplatValue,NumBytes,StoreAlignment);
   else {
@@ -517,7 +517,7 @@ processLoopStridedStore(Value *DestPtr, unsigned StoreSize,
   
   DEBUG(dbgs() << "  Formed memset: " << *NewCall << "\n"
                << "    from store to: " << *Ev << " at: " << *TheStore << "\n");
-  (void)NewCall;
+  NewCall->setDebugLoc(TheStore->getDebugLoc());
   
   // Okay, the memset has been formed.  Zap the original store and anything that
   // feeds into it.

diff --git a/test/Transforms/LoopIdiom/debug-line.ll b/test/Transforms/LoopIdiom/debug-line.ll
new file mode 100644 (file)
index 0000000..d31662d
--- /dev/null
+++ b/test/Transforms/LoopIdiom/debug-line.ll
@@ -0,0 +1,49 @@
+; RUN: opt -loop-idiom < %s -S | FileCheck %s
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin10.0.0"
+
+
+define void @foo(double* nocapture %a) nounwind ssp {
+entry:
+  tail call void @llvm.dbg.value(metadata !{double* %a}, i64 0, metadata !5), !dbg !8
+  tail call void @llvm.dbg.value(metadata !9, i64 0, metadata !10), !dbg !14
+  br label %for.body
+
+for.body:                                         ; preds = %entry, %for.body
+  %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.body ]
+  %arrayidx = getelementptr double* %a, i64 %indvar
+; CHECK: call void @llvm.memset{{.+}} !dbg 
+  store double 0.000000e+00, double* %arrayidx, align 8, !dbg !15
+  %indvar.next = add i64 %indvar, 1
+  %exitcond = icmp ne i64 %indvar.next, 1000
+  br i1 %exitcond, label %for.body, label %for.end, !dbg !14
+
+for.end:                                          ; preds = %for.body
+  tail call void @llvm.dbg.value(metadata !{null}, i64 0, metadata !10), !dbg !16
+  ret void, !dbg !17
+}
+
+declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
+
+declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
+
+!llvm.dbg.sp = !{!0}
+
+!0 = metadata !{i32 589870, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"", metadata !1, i32 2, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, void (double*)* @foo} ; [ DW_TAG_subprogram ]
+!1 = metadata !{i32 589865, metadata !"li.c", metadata !"/private/tmp", metadata !2} ; [ DW_TAG_file_type ]
+!2 = metadata !{i32 589841, i32 0, i32 12, metadata !"li.c", metadata !"/private/tmp", metadata !"clang version 2.9 (trunk 127165:127174)", 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 !{null}
+!5 = metadata !{i32 590081, metadata !0, metadata !"a", metadata !1, i32 16777218, metadata !6, i32 0} ; [ DW_TAG_arg_variable ]
+!6 = metadata !{i32 589839, metadata !2, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !7} ; [ DW_TAG_pointer_type ]
+!7 = metadata !{i32 589860, metadata !2, metadata !"double", null, i32 0, i64 64, i64 64, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ]
+!8 = metadata !{i32 2, i32 18, metadata !0, null}
+!9 = metadata !{i32 0}
+!10 = metadata !{i32 590080, metadata !11, metadata !"i", metadata !1, i32 3, metadata !13, i32 0} ; [ DW_TAG_auto_variable ]
+!11 = metadata !{i32 589835, metadata !12, i32 3, i32 3, metadata !1, i32 1} ; [ DW_TAG_lexical_block ]
+!12 = metadata !{i32 589835, metadata !0, i32 2, i32 21, metadata !1, i32 0} ; [ DW_TAG_lexical_block ]
+!13 = metadata !{i32 589860, metadata !2, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
+!14 = metadata !{i32 3, i32 3, metadata !12, null}
+!15 = metadata !{i32 4, i32 5, metadata !11, null}
+!16 = metadata !{i32 3, i32 29, metadata !11, null}
+!17 = metadata !{i32 5, i32 1, metadata !12, null}