[llvm] r236661 - Bitcode: Set LastDL after writing DebugLocs
Duncan P. N. Exon Smith
dexonsmith at apple.com
Wed May 6 15:51:12 PDT 2015
Author: dexonsmith
Date: Wed May 6 17:51:12 2015
New Revision: 236661
URL: http://llvm.org/viewvc/llvm-project?rev=236661&view=rev
Log:
Bitcode: Set LastDL after writing DebugLocs
Somehow I dropped this in r233585, and we haven't had `DEBUG_LOC_AGAIN`
records since. Add it back. Also tests that the output assembly looks
okay.
Fixes PR23436.
Added:
llvm/trunk/test/Bitcode/debug-loc-again.ll
Modified:
llvm/trunk/lib/Bitcode/Writer/BitcodeWriter.cpp
Modified: llvm/trunk/lib/Bitcode/Writer/BitcodeWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Bitcode/Writer/BitcodeWriter.cpp?rev=236661&r1=236660&r2=236661&view=diff
==============================================================================
--- llvm/trunk/lib/Bitcode/Writer/BitcodeWriter.cpp (original)
+++ llvm/trunk/lib/Bitcode/Writer/BitcodeWriter.cpp Wed May 6 17:51:12 2015
@@ -2135,6 +2135,8 @@ static void WriteFunction(const Function
Vals.push_back(VE.getMetadataOrNullID(DL->getInlinedAt()));
Stream.EmitRecord(bitc::FUNC_CODE_DEBUG_LOC, Vals);
Vals.clear();
+
+ LastDL = DL;
}
// Emit names for all the instructions etc.
Added: llvm/trunk/test/Bitcode/debug-loc-again.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Bitcode/debug-loc-again.ll?rev=236661&view=auto
==============================================================================
--- llvm/trunk/test/Bitcode/debug-loc-again.ll (added)
+++ llvm/trunk/test/Bitcode/debug-loc-again.ll Wed May 6 17:51:12 2015
@@ -0,0 +1,36 @@
+; RUN: llvm-as < %s | llvm-bcanalyzer -dump | FileCheck %s -check-prefix=BC
+; PR23436: Actually emit DEBUG_LOC_AGAIN records.
+
+; BC: <DEBUG_LOC op
+; BC: <DEBUG_LOC_AGAIN/>
+; BC: <DEBUG_LOC op
+; BC: <DEBUG_LOC_AGAIN/>
+
+; RUN: llvm-as < %s | llvm-dis | FileCheck %s
+; RUN: verify-uselistorder %s
+; Check that this round-trips correctly.
+
+define void @foo() {
+entry:
+ %a = add i32 0, 0, !dbg !3
+ %b = add i32 0, 1, !dbg !3
+ %c = add i32 0, 2, !dbg !4
+ ret void, !dbg !4
+}
+
+; CHECK-LABEL: entry:
+; CHECK-NEXT: %a = add i32 0, 0, !dbg ![[LINE1:[0-9]+]]
+; CHECK-NEXT: %b = add i32 0, 1, !dbg ![[LINE1]]
+; CHECK-NEXT: %c = add i32 0, 2, !dbg ![[LINE2:[0-9]+]]
+; CHECK-NEXT: ret void, !dbg ![[LINE2]]
+; CHECK: ![[LINE1]] = !DILocation(line: 1,
+; CHECK: ![[LINE2]] = !DILocation(line: 2,
+
+!llvm.module.flags = !{!0}
+
+!0 = !{i32 2, !"Debug Info Version", i32 3}
+!1 = !DICompileUnit(language: DW_LANG_C99, file: !DIFile(filename: "f", directory: "/d"),
+ subprograms: !{!2})
+!2 = !DISubprogram(name: "foo")
+!3 = !DILocation(line: 1, scope: !2)
+!4 = !DILocation(line: 2, scope: !2)
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