[LLVMbugs] [Bug 15459] New: UNREACHABLE executed at ScheduleDAGInstrs.cpp:521!

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15459

            Bug ID: 15459
           Summary: UNREACHABLE executed at ScheduleDAGInstrs.cpp:521!
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: rdivacky at freebsd.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10148
  --> http://llvm.org/bugs/attachment.cgi?id=10148&action=edit
test case

/usr/local/bin/clang -cc1 -triple x86_64-unknown-freebsd9.1 -emit-obj
-disable-free -main-file-name perlmini.c -mrelocation-model pic -pic-level 2
-mdisable-fp-elim -relaxed-aliasing -masm-verbose -mconstructor-aliases
-munwind-tables -target-cpu corei7 -target-linker-version 2.17.50
-momit-leaf-frame-pointer -D PERL_CORE -D
'APPLLIB_EXP="/usr/local/lib/perl5/5.16.2/BSDPAN"' -D HAS_FPSETMASK -D
HAS_FLOATINGPOINT_H -D PIC -D PERL_IS_MINIPERL -D PERL_EXTERNAL_GLOB -O2 -Wall
-W -Wextra -Wdeclaration-after-statement -Wendif-labels -Wc++-compat
-Wwrite-strings -std=c89 -fconst-strings -ferror-limit 19 -fmessage-length 115
-stack-protector 1 -mstackrealign -fobjc-runtime=gnustep
-fobjc-default-synthesize-properties -fdiagnostics-show-option
-fcolor-diagnostics -backend-option -vectorize-loops -mllvm -enable-misched
-mllvm -enable-aa-sched-mi -x c perlmini.c

UNREACHABLE executed at ScheduleDAGInstrs.cpp:521!
Stack dump:
0.      Program arguments: /usr/local/bin/clang -cc1 -triple
x86_64-unknown-freebsd9.1 -emit-obj -disable-free -main-file-name perlmini.c
-mrelocation-model pic -pic-level 2 -mdisable-fp-elim -relaxed-aliasing
-masm-verbose -mconstructor-aliases -munwind-tables -target-cpu corei7
-target-linker-version 2.17.50 -momit-leaf-frame-pointer -D PERL_CORE -D
APPLLIB_EXP="/usr/local/lib/perl5/5.16.2/BSDPAN" -D HAS_FPSETMASK -D
HAS_FLOATINGPOINT_H -D PIC -D PERL_IS_MINIPERL -D PERL_EXTERNAL_GLOB -O2 -Wall
-W -Wextra -Wdeclaration-after-statement -Wendif-labels -Wc++-compat
-Wwrite-strings -std=c89 -fconst-strings -ferror-limit 19 -fmessage-length 115
-stack-protector 1 -mstackrealign -fobjc-runtime=gnustep
-fobjc-default-synthesize-properties -fdiagnostics-show-option
-fcolor-diagnostics -backend-option -vectorize-loops -mllvm -enable-misched
-mllvm -enable-aa-sched-mi -x c perlmini.c 
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'perlmini.c'.
4.      Running pass 'Machine Instruction Scheduler' on function
'@perl_construct'
Abort (core dumped)

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