https://llvm.org/bugs/show_bug.cgi?id=28938
Bug ID: 28938
Summary: X86: MachineBasicBlock::getFirstTerminator returns
end() in llvm::getFuncletMembership
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: dexonsm...@apple.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
If you add an assertion after the call to MachineBasicBlock::getFirstTerminator
in llvm::getFuncletMembership that it's not the end() iterator, 48 X86
testcases fail. IIUC, every MachineBasicBlock should end with a terminator, so
this seems like a bug in X86.
I'm about to commit a patch that papers over this by checking for end() (to
avoid dereferencing it) to unblock my work on bug 26753.
Here are the tests that fail locally for me if you use an assertion instead:
--
Failing Tests (48):
LLVM :: CodeGen/WinEH/wineh-nested-unwind.ll
LLVM :: CodeGen/WinEH/wineh-noret-cleanup.ll
LLVM :: CodeGen/X86/branchfolding-catchpads.ll
LLVM :: CodeGen/X86/catchpad-dynamic-alloca.ll
LLVM :: CodeGen/X86/catchpad-lifetime.ll
LLVM :: CodeGen/X86/catchpad-realign-savexmm.ll
LLVM :: CodeGen/X86/catchpad-regmask.ll
LLVM :: CodeGen/X86/catchpad-weight.ll
LLVM :: CodeGen/X86/catchret-empty-fallthrough.ll
LLVM :: CodeGen/X86/catchret-fallthrough.ll
LLVM :: CodeGen/X86/catchret-regmask.ll
LLVM :: CodeGen/X86/cleanuppad-inalloca.ll
LLVM :: CodeGen/X86/cleanuppad-large-codemodel.ll
LLVM :: CodeGen/X86/cleanuppad-realign.ll
LLVM :: CodeGen/X86/deopt-bundles.ll
LLVM :: CodeGen/X86/funclet-layout.ll
LLVM :: CodeGen/X86/late-address-taken.ll
LLVM :: CodeGen/X86/pr26757.ll
LLVM :: CodeGen/X86/pr27501.ll
LLVM :: CodeGen/X86/regalloc-spill-at-ehpad.ll
LLVM :: CodeGen/X86/seh-catch-all-win32.ll
LLVM :: CodeGen/X86/seh-catch-all.ll
LLVM :: CodeGen/X86/seh-catchpad.ll
LLVM :: CodeGen/X86/seh-except-finally.ll
LLVM :: CodeGen/X86/seh-exception-code.ll
LLVM :: CodeGen/X86/seh-finally.ll
LLVM :: CodeGen/X86/seh-safe-div-win32.ll
LLVM :: CodeGen/X86/seh-safe-div.ll
LLVM :: CodeGen/X86/seh-stack-realign.ll
LLVM :: CodeGen/X86/tail-dup-catchret.ll
LLVM :: CodeGen/X86/tail-merge-wineh.ll
LLVM :: CodeGen/X86/win-catchpad-csrs.ll
LLVM :: CodeGen/X86/win-catchpad-nested-cxx.ll
LLVM :: CodeGen/X86/win-catchpad-nested.ll
LLVM :: CodeGen/X86/win-catchpad-varargs.ll
LLVM :: CodeGen/X86/win-catchpad.ll
LLVM :: CodeGen/X86/win-cleanuppad.ll
LLVM :: CodeGen/X86/win-funclet-cfi.ll
LLVM :: CodeGen/X86/win-mixed-ehpersonality.ll
LLVM :: CodeGen/X86/win32-eh-states.ll
LLVM :: CodeGen/X86/win32-eh.ll
LLVM :: CodeGen/X86/win32-seh-catchpad-realign.ll
LLVM :: CodeGen/X86/win32-seh-catchpad.ll
LLVM :: CodeGen/X86/win32-seh-nested-finally.ll
LLVM :: CodeGen/X86/wineh-coreclr.ll
LLVM :: CodeGen/X86/wineh-exceptionpointer.ll
LLVM :: DebugInfo/COFF/comdat.ll
LLVM :: Transforms/IndVarSimplify/iv-widen-elim-ext.ll
--
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
