From 7757fff6aebdca376a46412c8dfb3fab7d8ad411 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Wed, 30 Jan 2008 19:00:21 +0000
Subject: Accept getelementptr starting at GV with all 0 indices as a
 legitimate way of representing global variable GV in debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46565 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineModuleInfo.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'lib/CodeGen/MachineModuleInfo.cpp')

diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp
index 8aa4c4456a..c1823947b1 100644
--- a/lib/CodeGen/MachineModuleInfo.cpp
+++ b/lib/CodeGen/MachineModuleInfo.cpp
@@ -104,6 +104,13 @@ static GlobalVariable *getGlobalVariable(Value *V) {
   } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
     if (CE->getOpcode() == Instruction::BitCast) {
       return dyn_cast<GlobalVariable>(CE->getOperand(0));
+    } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+      for (unsigned int i=1; i<CE->getNumOperands(); i++) {
+        Constant* CI = cast<Constant>(CE->getOperand(i));
+        if (!CI || !CI->isNullValue())
+          return NULL;
+      }
+      return dyn_cast<GlobalVariable>(CE->getOperand(0));
     }
   }
   return NULL;
@@ -117,6 +124,13 @@ static bool isGlobalVariable(Value *V) {
   } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
     if (CE->getOpcode() == Instruction::BitCast) {
       return isa<GlobalVariable>(CE->getOperand(0));
+    } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+      for (unsigned int i=1; i<CE->getNumOperands(); i++) {
+        Constant* CI = cast<Constant>(CE->getOperand(i));
+        if (!CI || !CI->isNullValue())
+          return false;
+      }
+      return isa<GlobalVariable>(CE->getOperand(0));
     }
   }
   return false;
-- 
cgit v1.2.3-18-g5258