[PATCH] D130908: [SelectionDAG] Handle IntToPtr constants in dbg.value

[Felipe de Azevedo Piovezan via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGa5a8a05c78c0: [SelectionDAG] Handle IntToPtr constants in dbg.value (authored by fdeazeve).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130908/new/

https://reviews.llvm.org/D130908

Files:
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/test/CodeGen/AArch64/inttoptr_debug_value.ll


Index: llvm/test/CodeGen/AArch64/inttoptr_debug_value.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/AArch64/inttoptr_debug_value.ll
@@ -0,0 +1,25 @@
+; RUN: llc -o - --print-after-isel %s 2>&1 | FileCheck %s
+
+target triple = "arm64-apple-ios13.4.0"
+define void @foo() !dbg !6 {
+  ; CHECK: DBG_VALUE 42, $noreg, !"myvar", !DIExpression()
+  call void @llvm.dbg.value(metadata ptr inttoptr (i64 42 to ptr), metadata !9, metadata !DIExpression()), !dbg !11
+  ret void
+}
+
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!5}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
+!1 = !DIFile(filename: "t.ll", directory: "/")
+!2 = !{}
+!5 = !{i32 4, !"Debug Info Version", i32 3}
+!6 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !7, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
+!7 = !DISubroutineType(types: !2)
+!8 = !{!9}
+!9 = !DILocalVariable(name: "myvar", scope: !6, file: !1, line: 1, type: !10)
+!10 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned)
+!11 = !DILocation(line: 1, column: 1, scope: !6)
+!12 = !DILocation(line: 2, column: 1, scope: !6)
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1344,6 +1344,13 @@
       continue;
     }
 
+    // Look through IntToPtr constants.
+    if (auto *CE = dyn_cast<ConstantExpr>(V))
+      if (CE->getOpcode() == Instruction::IntToPtr) {
+        LocationOps.emplace_back(SDDbgOperand::fromConst(CE->getOperand(0)));
+        continue;
+      }
+
     // If the Value is a frame index, we can create a FrameIndex debug value
     // without relying on the DAG at all.
     if (const AllocaInst *AI = dyn_cast<AllocaInst>(V)) {


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