http://llvm.org/bugs/show_bug.cgi?id=2226
Summary: use of uninitialized variables in
SimpleRegisterCoalescing.cpp
Product: libraries
Version: trunk
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Common Code Generator Code
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected]
SimpleRegisterCoalescing.cpp at line 1937 calls TargetInstrInfo::isMoveInstr
to get the source and destination registers of a move without checking
the result value to see if the instruction was actually a move. It looks like
it should be, but currently there are cases where this assumption doesn't
hold. When it doesn't the following code ends up referencing the
variables uninitialized.
For example, when compiling
test/CodeGen/Generic/2003-07-08-BadCastToBool.ll
on x86 the code at line 1073 inserts a non-move instruction into
JoinedCopies.
The attached patch demonstrates the problem by using an assert.
--
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
_______________________________________________
LLVMbugs mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/llvmbugs
