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CBE Not Generating BITCAST_TEMPORARY Declarations #1430

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llvmbot opened this issue Dec 17, 2006 · 3 comments
Closed

CBE Not Generating BITCAST_TEMPORARY Declarations #1430

llvmbot opened this issue Dec 17, 2006 · 3 comments
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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 Dec 17, 2006

Bugzilla Link 1058
Resolution FIXED
Resolved on Feb 22, 2010 12:52
Version trunk
OS All
Reporter LLVM Bugzilla Contributor

Extended Description

In some cases, the CBE is not generating the BITCAST_TEMPORARY variable needed
to perform a fp<->int bitcast. This was originally reported by Evan Cheng.

The symptom is compile errors like this:

Output/462.libquantum.cbe.c: In function 'quantum_objcode_put':
Output/462.libquantum.cbe.c:674: error: 'ltmp_118_4__BITCAST_TEMPORARY'
undeclared (first use in this function)
@llvmbot
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llvmbot commented Dec 17, 2006

Evan reports that the problem can be reproduced with:

opt bugpoint-reduced-simplified.bc -funcresolve -internalize -ipsccp -globalopt
-constmerge -deadargelim -basiccg -inline -prune-eh -globalopt -globaldce
-basiccg -argpromotion -instcombine -idom -domtree -domfrontier -scalarrepl
-globalsmodref-aa -idom -etforest -loops -domset -domtree -loopsimplify
-domfrontier -licm -lo\ad-vn -gcse -dse -instcombine -simplifycfg -globaldce
-idom -etforest -verify

The bytecode file will be attached.

@llvmbot
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llvmbot commented Dec 17, 2006

Reduced test case that produces the problem.

@llvmbot
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llvmbot commented Dec 17, 2006

Fixed with this patch:

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061211/041524.html

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 3, 2021
@zygoloid zygoloid mentioned this issue Mar 7, 2024
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