http://llvm.org/bugs/show_bug.cgi?id=17168
Bug ID: 17168
Summary: Fast isel causes: Assertion `Bits != 0 && "Cannot
print this instruction."'
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: PowerPC
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 11171
--> http://llvm.org/bugs/attachment.cgi?id=11171&action=edit
bugpoint reduced test case
Running llc -O0 -o bt.s bugpoint-reduced-simplified.ll on the attached test
case yields:
llvm-trunk-build/lib/Target/PowerPC/InstPrinter/../PPCGenAsmWriter.inc:2397:
void llvm::PPCInstPrinter::printInstruction(const llvm::MCInst*,
llvm::raw_ostream&): Assertion `Bits != 0 && "Cannot print this instruction."'
failed.
Two things:
- Generating the .ll file without -g causes the crash to go away
- Running llc with -fast-isel=0 does not crash
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