Reset the EntryValue location flag in finalizeEntryValue.
This fixes an assertion error when entry values are combined with
DW_OP_LLVM_fragment.
GitOrigin-RevId: c4ad878acb62d0264072e28f413178d5d8670e49
diff --git a/lib/CodeGen/AsmPrinter/DwarfExpression.cpp b/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
index 3e664b3..ef61e2e 100644
--- a/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
@@ -400,6 +400,7 @@
// Emit the entry value's DWARF block operand.
commitTemporaryBuffer();
+ LocationFlags &= ~EntryValue;
LocationKind = SavedLocationKind;
IsEmittingEntryValue = false;
}
diff --git a/test/DebugInfo/MIR/X86/piece-entryval.mir b/test/DebugInfo/MIR/X86/piece-entryval.mir
new file mode 100644
index 0000000..0f63faa
--- /dev/null
+++ b/test/DebugInfo/MIR/X86/piece-entryval.mir
@@ -0,0 +1,54 @@
+# RUN: llc -filetype=obj -start-after=livedebugvalues -verify-machineinstrs -march=x86-64 -o - %s | llvm-dwarfdump - | FileCheck %s
+# CHECK: DW_OP_entry_value(DW_OP_reg5 RDI), DW_OP_stack_value, DW_OP_piece 0x2, DW_OP_breg5 RDI+0, DW_OP_constu 0xffffffff, DW_OP_and, DW_OP_lit16, DW_OP_shr, DW_OP_piece 0x2
+--- |
+ ; ModuleID = '/tmp/e.c'
+ source_filename = "/tmp/e.c"
+ target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-apple-macosx11.0.0"
+
+ ; Function Attrs: norecurse nounwind readnone ssp uwtable willreturn
+ define dso_local void @f(i32 %i) local_unnamed_addr #0 !dbg !8 {
+ entry:
+ call void @llvm.dbg.value(metadata i32 %i, metadata !14, metadata !DIExpression(DW_OP_plus_uconst, 0)), !dbg !15
+ ret void, !dbg !16
+ }
+
+ ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
+ declare void @llvm.dbg.value(metadata, metadata, metadata) #1
+
+ attributes #0 = { norecurse nounwind readnone ssp uwtable willreturn }
+ attributes #1 = { nofree nosync nounwind readnone speculatable willreturn }
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!3, !4, !5, !6}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
+ !1 = !DIFile(filename: "/tmp/e.c", directory: "/")
+ !2 = !{}
+ !3 = !{i32 7, !"Dwarf Version", i32 4}
+ !4 = !{i32 2, !"Debug Info Version", i32 3}
+ !5 = !{i32 1, !"wchar_size", i32 4}
+ !6 = !{i32 7, !"PIC Level", i32 2}
+ !8 = distinct !DISubprogram(name: "f", scope: !9, file: !9, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
+ !9 = !DIFile(filename: "/tmp/e.c", directory: "")
+ !10 = !DISubroutineType(types: !11)
+ !11 = !{null, !12}
+ !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !13 = !{!14}
+ !14 = !DILocalVariable(name: "i", arg: 1, scope: !8, file: !9, line: 1, type: !12)
+ !15 = !DILocation(line: 0, scope: !8)
+ !16 = !DILocation(line: 1, column: 16, scope: !8)
+
+...
+---
+name: f
+body: |
+ bb.0.entry:
+ DBG_VALUE $edi, $noreg, !14, !DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_LLVM_fragment, 0, 16), debug-location !15
+ DBG_VALUE $edi, $noreg, !14, !DIExpression(DW_OP_constu, 16, DW_OP_shr, DW_OP_LLVM_fragment, 16, 16), debug-location !15
+ frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
+ $rbp = frame-setup MOV64rr $rsp
+ $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16
+ RETQ debug-location !16
+
+...
