Fix crash reported in PR7653.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108441 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 4f3866956cac592e11276db4765a04f81e6d03ba..fb3f7c07d0c4c435a447de2aa75dad41681cf2a1 100644 (file)
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -2476,7 +2476,7 @@ void TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
         int64_t Offs = GA->getOffset();
         if (C) Offs += C->getZExtValue();
         Ops.push_back(DAG.getTargetGlobalAddress(GA->getGlobal(), 
-                                                 C->getDebugLoc(),
+                                                 C ? C->getDebugLoc() : DebugLoc(),
                                                  Op.getValueType(), Offs));
         return;
       }

diff --git a/test/CodeGen/X86/2010-07-15-Crash.ll b/test/CodeGen/X86/2010-07-15-Crash.ll
new file mode 100644 (file)
index 0000000..3ac4cf5
--- /dev/null
+++ b/test/CodeGen/X86/2010-07-15-Crash.ll
@@ -0,0 +1,12 @@
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s -o /dev/null
+; PR7653
+
+@__FUNCTION__.1623 = external constant [4 x i8]   ; <[4 x i8]*> [#uses=1]
+
+define void @foo() nounwind {
+entry:
+  tail call void asm sideeffect "", "s,i,~{fpsr},~{flags}"(i8* getelementptr
+inbounds ([4 x i8]* @__FUNCTION__.1623, i64 0, i64 0), i8* getelementptr
+inbounds ([4 x i8]* @__FUNCTION__.1623, i64 0, i64 0)) nounwind
+  ret void
+}