From a97ff8a027259b1b9e4dbdb5b6f01cc2195a6948 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Thu, 3 Mar 2011 05:18:19 +0000 Subject: Avoid comparing invalid slot indexes, and assert that it doesn't happen. The SlotIndex created by the default construction does not represent a position in the function, and it doesn't make sense to compare it to other indexes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126924 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/SlotIndexes.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/llvm/CodeGen/SlotIndexes.h b/include/llvm/CodeGen/SlotIndexes.h index 8d3b1c0..153e520 100644 --- a/include/llvm/CodeGen/SlotIndexes.h +++ b/include/llvm/CodeGen/SlotIndexes.h @@ -135,6 +135,7 @@ namespace llvm { } IndexListEntry& entry() const { + assert(isValid() && "Attempt to compare reserved index."); return *lie.getPointer(); } @@ -530,7 +531,7 @@ namespace llvm { /// Returns the instruction for the given index, or null if the given /// index has no instruction associated with it. MachineInstr* getInstructionFromIndex(SlotIndex index) const { - return index.entry().getInstr(); + return index.isValid() ? index.entry().getInstr() : 0; } /// Returns the next non-null index. -- cgit v1.1