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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang Fast Register Allocator crashes"
href="http://llvm.org/bugs/show_bug.cgi?id=20171">20171</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang Fast Register Allocator crashes
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ihholmes@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=12725" name="attach_12725" title="C source file">attachment 12725</a> <a href="attachment.cgi?id=12725&action=edit" title="C source file">[details]</a></span>
C source file
Clang version 5.1
XCode 5.1.1 running on OS X Mavericks, compiling to iOS 7.1
Reproducible usage (sorry I haven't been able to trim this down)
clang -cc1 -triple arm64-apple-ios7.0.0 -Wdeprecated-objc-isa-usage
-Werror=deprecated-objc-isa-usage -Werror=implicit-function-declaration
-emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name
board.c -mrelocation-model pic -pic-level 2 -mdisable-fp-elim -masm-verbose
-target-abi darwinpcs -target-cpu cyclone -target-linker-version 236.3
-gdwarf-2 -D "DEBUG=1" -D "SEXP_USE_DL=0" -D "SEXP_USE_STATIC_LIBS" -D
"SEXP_64_BIT" -O0 -Wno-trigraphs -Wno-missing-field-initializers
-Wno-missing-prototypes -Wno-missing-braces -Wparentheses -Wswitch
-Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable
-Wunused-value -Wempty-body -Wuninitialized -Wno-unknown-pragmas -Wno-shadow
-Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion
-Wno-bool-conversion -Wenum-conversion -Wshorten-64-to-32 -Wpointer-sign
-Wno-newline-eof -Wdeprecated-declarations -Wno-sign-conversion -std=gnu99
-ferror-limit 19 -fmacro-backtrace-limit 0 -fmessage-length 0 -stack-protector
1 -mstackrealign -fblocks -fobjc-runtime=ios-7.0.0
-fencode-extended-block-signature -fpascal-strings -fdiagnostics-show-option
-fdiagnostics-show-note-include-stack -vectorize-slp -x c bug.c
Output:
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'bug.c'.
4. Running pass 'Fast Register Allocator' on function
'@boardAttemptFunctionRule'
Segmentation fault</pre>
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