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X86 -enable-x86-fastcc crash on functions returning bool #1305

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llvmbot opened this issue Oct 3, 2006 · 2 comments
Closed

X86 -enable-x86-fastcc crash on functions returning bool #1305

llvmbot opened this issue Oct 3, 2006 · 2 comments
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@lattner
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backend:X86 bugzilla Issues migrated from bugzilla compile-fail Use [accepts-invalid] and [rejects-valid] instead

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@llvmbot
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llvmbot commented Oct 3, 2006

Bugzilla Link 933
Resolution FIXED
Resolved on Feb 22, 2010 12:50
Version trunk
OS All
Attachments bugpoint reduced bytecode
Reporter LLVM Bugzilla Contributor

Extended Description

llc -enable-x86-fastcc bugpoint-reduced-simplified.bc -f -o bugpoint-reduced-simplified.s

llc: X86ISelLowering.cpp:1495: llvm::SDOperand llvm::X86TargetLowering::LowerFastCCArguments
(llvm::SDOperand, llvm::SelectionDAG&): Assertion `0 && "Unknown type!"' failed.
llc((anonymous namespace)::PrintStackTrace()+0x1f)[0x852c01f]
/lib/libc.so.6(abort+0xeb)[0xb7dc10f3]
/lib/libc.so.6(__assert_fail+0xeb)[0xb7db94af]
llc(llvm::X86TargetLowering::LowerFastCCArguments(llvm::SDOperand, llvm::SelectionDAG&)+0x98b)
[0x821d72b]
./REDUCED_CRASH: line 1: 27102 Aborted llc -enable-x86-fastcc bugpoint-reduced-
simplified.bc -f -o bugpoint-reduced-simplified.s
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llvmbot commented Oct 3, 2006

assigned to @lattner

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lattner commented Oct 3, 2006

Fixed.  Testcase here: CodeGen/X86/2006-10-02-BoolRetCrash.ll

Patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061002/038246.html

Thanks!

One note though: -enable-x86-fastcc has a couple of problems, and doesn't always necessarily speed up
the code.  Use it with care. :)

-Chris

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 3, 2021
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backend:X86 bugzilla Issues migrated from bugzilla compile-fail Use [accepts-invalid] and [rejects-valid] instead
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